perf: Phase 1-3 Stock Oracle API 성능 개선

Phase 1A - yfinance hang 제거
- _run_with_timeout() 헬퍼 추가 (asyncio.wait_for 래퍼)
- run_in_executor 6곳에 timeout 적용: history(30s), .info(20s), bulk download(60s)

Phase 1B - SEC Filing deadline 설정
- index_filings: 60s deadline + try/finally
- get_filing_documents: 30s deadline (중첩 호출 시 기존 deadline 유지)
- get_exhibit_content: 30s deadline + try/finally

Phase 1C - _get_ticker_max_range async 전환
- sync → async def + run_in_executor + wait_for(20s)
- get_or_create_company_data에서 period=="max" 사전 체크 → await 직접 호출

Phase 1D - Endpoint 레벨 timeout
- POST /price/data/bulk: 300s → 504
- POST /financial/data/bulk: 300s → 504
- GET /filings/search/{ticker}: 120s → 504
- GET /filings/documents/{accession}: 30s → 504
- GET /filings/exhibit/{accession}: 30s → 504

Phase 2 - Filing 캐시 추가
- GET /filings/documents: @with_cache(ttl=86400)
- GET /filings/exhibit: @with_cache(ttl=86400)

Phase 3A - POST /filings/search/bulk 추가
- BulkFilingSearchRequest/Item/Response 스키마
- search_filings_bulk(): 배치 DB 조회 → 미인덱싱 ticker 병렬 인덱싱(Semaphore 4)
- @with_cache(ttl=3600), 600s endpoint timeout

Phase 3B - POST /filings/exhibit/bulk 추가
- BulkExhibitRequest/Item/Response 스키마
- asyncio.gather + 개별 30s timeout, 최대 50건

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/api/v1/endpoints/filings.py

@@ -2,15 +2,22 @@
 SEC Filings endpoints: search, document listing, and exhibit extraction.
 """
 
+import asyncio
 import logging
 from datetime import datetime, timezone
-from typing import Optional
+from typing import List, Optional
 
 from fastapi import APIRouter, Depends, HTTPException, Query, Response
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.core.database import get_db
 from app.schemas.filing import (
+    BulkExhibitItem,
+    BulkExhibitRequest,
+    BulkExhibitResponse,
+    BulkFilingSearchItem,
+    BulkFilingSearchRequest,
+    BulkFilingSearchResponse,
     ExhibitContentResponse,
     FilingDocumentInfo,
     FilingDocumentListResponse,
@@ -75,7 +82,8 @@ async def search_filings(
             raise HTTPException(status_code=502, detail=f"SEC indexing failed: {e}")
 
     try:
-        filings, total_count = await sec_filings_service.search_filings(
+        filings, total_count = await asyncio.wait_for(
+            sec_filings_service.search_filings(
                 db,
                 ticker,
                 form_types=form_types_set,
@@ -83,7 +91,11 @@ async def search_filings(
                 end_date=end_dt,
                 limit=limit,
                 offset=offset,
+            ),
+            timeout=120,
         )
+    except asyncio.TimeoutError:
+        raise HTTPException(status_code=504, detail="Filing search timed out after 120s.")
     except ValueError as e:
         raise HTTPException(status_code=404, detail=str(e))
     except Exception as e:
@@ -118,13 +130,20 @@ async def search_filings(
 
 
 @router.get("/documents/{accession_number}", response_model=FilingDocumentListResponse)
+@with_cache(namespace="filings:documents", ttl=86400, key_params=["accession_number"])
 async def get_filing_documents(
     accession_number: str,
+    response: Response,
     db: AsyncSession = Depends(get_db),
 ):
     """List all documents within a SEC filing."""
     try:
-        documents = await sec_filings_service.get_filing_documents(db, accession_number)
+        documents = await asyncio.wait_for(
+            sec_filings_service.get_filing_documents(db, accession_number),
+            timeout=30,
+        )
+    except asyncio.TimeoutError:
+        raise HTTPException(status_code=504, detail="Document listing timed out after 30s.")
     except ValueError as e:
         raise HTTPException(status_code=404, detail=str(e))
     except Exception as e:
@@ -140,16 +159,21 @@ async def get_filing_documents(
 
 
 @router.get("/exhibit/{accession_number}", response_model=ExhibitContentResponse)
+@with_cache(namespace="filings:exhibit", ttl=86400, key_params=["accession_number", "exhibit_type"])
 async def get_exhibit_content(
     accession_number: str,
+    response: Response,
     exhibit_type: str = Query("EX-99.1", description="Exhibit type (e.g. EX-99.1)"),
     db: AsyncSession = Depends(get_db),
 ):
     """Extract exhibit content (e.g., press release EX-99.1) from a filing."""
     try:
-        result = await sec_filings_service.get_exhibit_content(
+        result = await asyncio.wait_for(
-            db, accession_number, exhibit_type
+            sec_filings_service.get_exhibit_content(db, accession_number, exhibit_type),
+            timeout=30,
         )
+    except asyncio.TimeoutError:
+        raise HTTPException(status_code=504, detail="Exhibit extraction timed out after 30s.")
     except ValueError as e:
         raise HTTPException(status_code=404, detail=str(e))
     except Exception as e:
@@ -164,3 +188,150 @@ async def get_exhibit_content(
         filename=result.get("filename"),
         url=result.get("url"),
     )
+
+
+@router.post("/search/bulk", response_model=BulkFilingSearchResponse)
+@with_cache(namespace="filings:search:bulk", ttl=3600, key_params=["request"])
+async def search_filings_bulk(
+    request: BulkFilingSearchRequest,
+    response: Response,
+    db: AsyncSession = Depends(get_db),
+):
+    """Bulk search SEC filings for multiple tickers. Auto-indexes from SEC if not in DB."""
+    form_types_set = None
+    if request.form_type:
+        form_types_set = {ft.strip().upper() for ft in request.form_type.split(",") if ft.strip()}
+        unsupported = form_types_set - sec_filings_service.SUPPORTED_FORM_TYPES
+        if unsupported:
+            raise HTTPException(
+                status_code=400,
+                detail=f"Unsupported form types: {unsupported}.",
+            )
+
+    start_dt = None
+    end_dt = None
+    try:
+        if request.start_date:
+            start_dt = datetime.strptime(request.start_date, "%Y-%m-%d").replace(tzinfo=timezone.utc)
+        if request.end_date:
+            end_dt = datetime.strptime(request.end_date, "%Y-%m-%d").replace(
+                hour=23, minute=59, second=59, tzinfo=timezone.utc
+            )
+    except ValueError:
+        raise HTTPException(status_code=400, detail="Invalid date format. Use YYYY-MM-DD")
+
+    try:
+        raw_results, elapsed = await asyncio.wait_for(
+            sec_filings_service.search_filings_bulk(
+                db,
+                request.tickers,
+                form_types=form_types_set,
+                start_date=start_dt,
+                end_date=end_dt,
+                limit_per_ticker=request.limit_per_ticker,
+            ),
+            timeout=600,
+        )
+    except asyncio.TimeoutError:
+        raise HTTPException(status_code=504, detail="Bulk filing search timed out after 600s.")
+    except Exception as e:
+        logger.error(f"Bulk filing search failed: {e}")
+        raise HTTPException(status_code=502, detail=f"Bulk filing search failed: {e}")
+
+    items = []
+    successful = 0
+    failed = 0
+    for r in raw_results:
+        summaries = []
+        for f in r["filings"]:
+            docs_count = len(f.documents_json) if f.documents_json else None
+            summaries.append(
+                FilingSummary(
+                    accession_number=f.accession_number,
+                    form_type=f.form_type,
+                    filing_date=f.filing_date.strftime("%Y-%m-%d"),
+                    accepted_at=f.accepted_at.isoformat() if f.accepted_at else None,
+                    primary_document=f.primary_document,
+                    filing_description=f.filing_description,
+                    documents_count=docs_count,
+                )
+            )
+        items.append(BulkFilingSearchItem(
+            ticker=r["ticker"],
+            success=r["success"],
+            filings=summaries,
+            total_count=r["total_count"],
+            error=r["error"],
+        ))
+        if r["success"]:
+            successful += 1
+        else:
+            failed += 1
+
+    return BulkFilingSearchResponse(
+        results=items,
+        total_tickers=len(items),
+        successful_count=successful,
+        failed_count=failed,
+        query_time_seconds=round(elapsed, 3),
+        metadata={"form_types": list(form_types_set) if form_types_set else None},
+    )
+
+
+@router.post("/exhibit/bulk", response_model=BulkExhibitResponse)
+async def get_exhibit_bulk(
+    request: BulkExhibitRequest,
+    db: AsyncSession = Depends(get_db),
+):
+    """Bulk fetch exhibit content for multiple accession numbers."""
+    import time as _time
+    t0 = _time.monotonic()
+
+    async def _fetch_one(item: dict) -> BulkExhibitItem:
+        accession_number = item.get("accession_number", "")
+        exhibit_type = item.get("exhibit_type", "EX-99.1")
+        try:
+            result = await asyncio.wait_for(
+                sec_filings_service.get_exhibit_content(db, accession_number, exhibit_type),
+                timeout=30,
+            )
+            return BulkExhibitItem(
+                accession_number=accession_number,
+                exhibit_type=exhibit_type,
+                success=True,
+                content=result["content"],
+                content_type=result.get("content_type"),
+                filename=result.get("filename"),
+                url=result.get("url"),
+            )
+        except Exception as e:
+            return BulkExhibitItem(
+                accession_number=accession_number,
+                exhibit_type=exhibit_type,
+                success=False,
+                error=str(e),
+            )
+
+    raw = await asyncio.gather(*[_fetch_one(item) for item in request.items], return_exceptions=True)
+    results: List[BulkExhibitItem] = []
+    for r in raw:
+        if isinstance(r, Exception):
+            results.append(BulkExhibitItem(
+                accession_number="unknown",
+                exhibit_type="unknown",
+                success=False,
+                error=str(r),
+            ))
+        else:
+            results.append(r)
+
+    successful = sum(1 for r in results if r.success)
+    elapsed = _time.monotonic() - t0
+
+    return BulkExhibitResponse(
+        results=results,
+        total_items=len(results),
+        successful_count=successful,
+        failed_count=len(results) - successful,
+        query_time_seconds=round(elapsed, 3),
+    )

app/api/v1/endpoints/financial.py

@@ -620,9 +620,15 @@ async def get_bulk_financial_data(
         async with semaphore:
             return await process_ticker(ticker)
     
-    # Execute all tickers in parallel
+    # Execute all tickers in parallel (300s endpoint-level timeout)
     tasks = [process_with_limit(ticker) for ticker in request.tickers]
-    results = await asyncio.gather(*tasks, return_exceptions=True)
+    try:
+        results = await asyncio.wait_for(
+            asyncio.gather(*tasks, return_exceptions=True),
+            timeout=300,
+        )
+    except asyncio.TimeoutError:
+        raise HTTPException(status_code=504, detail="Bulk financial data request timed out after 300s.")
     
     # Count successful and failed results
     successful_count = 0

app/api/v1/endpoints/price.py

@@ -448,15 +448,22 @@ async def get_bulk_price_data(
             }
         )
     
-    # Use optimized bulk processing method
+    # Use optimized bulk processing method (300s endpoint-level timeout)
-    results, successful_count, failed_count = await price_service.get_multiple_tickers_data_optimized(
+    import asyncio as _asyncio
+    try:
+        results, successful_count, failed_count = await _asyncio.wait_for(
+            price_service.get_multiple_tickers_data_optimized(
                 db=db,
                 tickers=request.tickers,
                 start_date=start_date,
                 end_date=end_date,
                 interval=request.interval,
                 force_refresh=request.force_refresh
+            ),
+            timeout=300,
         )
+    except _asyncio.TimeoutError:
+        raise HTTPException(status_code=504, detail="Bulk price data request timed out after 300s.")
     
     return BulkPriceDataResponse(
         results=results,

app/schemas/filing.py

@@ -3,7 +3,7 @@ Pydantic schemas for SEC filing endpoints.
 """
 
 from datetime import datetime
-from typing import List, Optional
+from typing import Any, Dict, List, Optional
 from pydantic import BaseModel, Field
 
 
@@ -45,3 +45,56 @@ class ExhibitContentResponse(BaseModel):
     content_type: Optional[str] = None
     filename: Optional[str] = None
     url: Optional[str] = None
+
+
+# ── Bulk filing search ──────────────────────────────────────────────────────
+
+class BulkFilingSearchRequest(BaseModel):
+    tickers: List[str] = Field(..., min_length=1, max_length=200)
+    form_type: Optional[str] = None
+    start_date: Optional[str] = None
+    end_date: Optional[str] = None
+    limit_per_ticker: int = Field(default=20, ge=1, le=100)
+
+
+class BulkFilingSearchItem(BaseModel):
+    ticker: str
+    success: bool
+    filings: List[FilingSummary] = []
+    total_count: int = 0
+    error: Optional[str] = None
+
+
+class BulkFilingSearchResponse(BaseModel):
+    results: List[BulkFilingSearchItem]
+    total_tickers: int
+    successful_count: int
+    failed_count: int
+    query_time_seconds: float
+    metadata: Dict[str, Any] = Field(default_factory=dict)
+
+
+# ── Bulk exhibit ────────────────────────────────────────────────────────────
+
+class BulkExhibitRequest(BaseModel):
+    items: List[Dict[str, str]] = Field(..., min_length=1, max_length=50)
+    # Each item: {"accession_number": "...", "exhibit_type": "EX-99.1"}
+
+
+class BulkExhibitItem(BaseModel):
+    accession_number: str
+    exhibit_type: str
+    success: bool
+    content: Optional[str] = None
+    content_type: Optional[str] = None
+    filename: Optional[str] = None
+    url: Optional[str] = None
+    error: Optional[str] = None
+
+
+class BulkExhibitResponse(BaseModel):
+    results: List[BulkExhibitItem]
+    total_items: int
+    successful_count: int
+    failed_count: int
+    query_time_seconds: float

app/services/financial_service.py

@@ -5,6 +5,7 @@ Real financial data service that combines price data with calculations
 from datetime import datetime, timezone, timedelta, date
 from typing import Dict, List, Optional, Tuple, Union
 import logging
+import asyncio
 import numpy as np
 from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy import select, and_, or_, desc
@@ -23,36 +24,33 @@ class FinancialService:
     def __init__(self):
         self.price_service = PriceDataService()
     
-    def _get_ticker_max_range(self, ticker: str) -> Tuple[datetime, datetime]:
+    async def _get_ticker_max_range(self, ticker: str) -> Tuple[datetime, datetime]:
         """
-        Get maximum date range for a ticker by checking its listing date via yfinance_plus
+        Get maximum date range for a ticker by checking its listing date via yfinance_plus.
-        
+        Runs the blocking yfinance call in a thread pool with a 20s timeout.
-        Args:
-            ticker: Stock ticker symbol
 
         Returns:
             Tuple of (listing_date, current_date) or fallback to 20 years if yfinance unavailable
         """
         try:
-            # Try to get ticker info from yfinance_plus to find actual listing date
             import yfinance_plus as yf
 
             ticker_obj = yf.Ticker(ticker)
-            
+            loop = asyncio.get_event_loop()
-            # Get a small sample of historical data to find the earliest available date
+            hist = await asyncio.wait_for(
-            # Use period="max" and interval="1mo" for faster query
+                loop.run_in_executor(
-            hist = ticker_obj.history(period="max", interval="1mo")
+                    None,
+                    lambda: ticker_obj.history(period="max", interval="1mo")
+                ),
+                timeout=20,
+            )
 
             if not hist.empty:
-                # Get the earliest date from the historical data
                 earliest_date = hist.index[0].to_pydatetime()
                 if earliest_date.tzinfo is None:
                     earliest_date = earliest_date.replace(tzinfo=timezone.utc)
 
-                # Current date as end
                 end_date = datetime.now(timezone.utc).replace(hour=23, minute=59, second=59, microsecond=0)
-                
-                # Ensure we don't go beyond SEC data availability (1994)
                 sec_start = datetime(settings.SEC_DATA_START_YEAR, 1, 1, tzinfo=timezone.utc)
                 actual_start = max(earliest_date, sec_start)
 
@@ -67,7 +65,6 @@ class FinancialService:
         end_date = datetime.now(timezone.utc).replace(hour=23, minute=59, second=59, microsecond=0)
         start_date = end_date - timedelta(days=20 * 365.25)  # 20 years
 
-        # Ensure we don't go beyond SEC data availability (1994)
         sec_start = datetime(settings.SEC_DATA_START_YEAR, 1, 1, tzinfo=timezone.utc)
         actual_start = max(start_date, sec_start)
 
@@ -88,10 +85,14 @@ class FinancialService:
         """
         ticker = ticker.upper()
 
-        # Resolve time parameters to standard datetime range
+        # Resolve time parameters to standard datetime range.
+        # _get_ticker_max_range is async, so handle "max" period before calling
+        # the sync resolve_time_parameters helper.
+        if period and period.lower() == "max":
+            resolved_start, resolved_end = await self._get_ticker_max_range(ticker)
+        else:
             resolved_start, resolved_end = resolve_time_parameters(
-            start_date, end_date, quarters, period, ticker,
+                start_date, end_date, quarters, period, ticker
-            ticker_max_range_fn=self._get_ticker_max_range
             )
         
         # Get or create company

app/services/price_data_service.py

@@ -21,6 +21,14 @@ from app.core.config import settings
 
 logger = logging.getLogger(__name__)
 
+
+async def _run_with_timeout(coro, timeout_seconds: float, description: str):
+    try:
+        return await asyncio.wait_for(coro, timeout=timeout_seconds)
+    except asyncio.TimeoutError:
+        raise TimeoutError(f"yfinance timed out after {timeout_seconds}s: {description}")
+
+
 # Import yfinance-plus for price data only
 try:
     import yfinance_plus as yf
@@ -184,7 +192,8 @@ class PriceDataService:
             
             # Run yfinance-plus in executor to avoid blocking
             loop = asyncio.get_event_loop()
-            hist_data = await loop.run_in_executor(
+            hist_data = await _run_with_timeout(
+                loop.run_in_executor(
                     None,
                     lambda: yf_ticker.history(
                         start=start_str,
@@ -194,6 +203,9 @@ class PriceDataService:
                         prepost=False,
                         period=None  # Explicitly set period to None when using start/end dates
                     )
+                ),
+                timeout_seconds=30,
+                description=f"history {ticker} {start_str}:{end_str}"
             )
             
             if hist_data.empty:
@@ -219,7 +231,11 @@ class PriceDataService:
         try:
             yf_ticker = yf.Ticker(ticker)
             loop = asyncio.get_event_loop()
-            info = await loop.run_in_executor(None, lambda: yf_ticker.info)
+            info = await _run_with_timeout(
+                loop.run_in_executor(None, lambda: yf_ticker.info),
+                timeout_seconds=20,
+                description=f"info {ticker}"
+            )
             # Prefer regular/post/pre values
             regular = info.get("regularMarketPrice")
             post = info.get("postMarketPrice") if use_prepost else None
@@ -260,9 +276,13 @@ class PriceDataService:
         try:
             yf_ticker = yf.Ticker(ticker)
             loop = asyncio.get_event_loop()
-            df = await loop.run_in_executor(
+            df = await _run_with_timeout(
+                loop.run_in_executor(
                     None,
                     lambda: yf_ticker.history(period=period, interval=interval, auto_adjust=True, prepost=True)
+                ),
+                timeout_seconds=30,
+                description=f"intraday {ticker} {period}/{interval}"
             )
             candles = []
             if not df.empty:
@@ -291,8 +311,12 @@ class PriceDataService:
             # First try daily with period=1d
             yf_ticker = yf.Ticker(ticker)
             loop = asyncio.get_event_loop()
-            daily = await loop.run_in_executor(
+            daily = await _run_with_timeout(
+                loop.run_in_executor(
                     None, lambda: yf_ticker.history(period="1d", interval="1d", auto_adjust=True, prepost=False)
+                ),
+                timeout_seconds=30,
+                description=f"today_ohlc {ticker}"
             )
             if daily is not None and not daily.empty:
                 ts, row = list(daily.iterrows())[-1]
@@ -425,7 +449,11 @@ class PriceDataService:
 
             # Run in executor to avoid blocking
             loop = asyncio.get_event_loop()
-            info = await loop.run_in_executor(None, lambda: yf_ticker.info)
+            info = await _run_with_timeout(
+                loop.run_in_executor(None, lambda: yf_ticker.info),
+                timeout_seconds=20,
+                description=f"ticker_info {ticker}"
+            )
 
             return info
             
@@ -716,10 +744,12 @@ class PriceDataService:
                 logger.info(f"Processing chunk {i//chunk_size + 1}: {len(chunk_tickers)} tickers")
                 
                 # Use yfinance-plus bulk download
-                bulk_data = await loop.run_in_executor(
+                _chunk_str = ' '.join(chunk_tickers)
+                bulk_data = await _run_with_timeout(
+                    loop.run_in_executor(
                         None,
                         lambda: yf.download(
-                        tickers=' '.join(chunk_tickers),
+                            tickers=_chunk_str,
                             start=start_str,
                             end=end_str,
                             interval=interval,
@@ -728,6 +758,9 @@ class PriceDataService:
                             group_by='ticker',
                             threads=True  # Enable multi-threading
                         )
+                    ),
+                    timeout_seconds=60,
+                    description=f"bulk_download {len(chunk_tickers)} tickers"
                 )
                 
                 # Process and store data for each ticker in the chunk

app/services/sec_filings_service.py

@@ -3,7 +3,9 @@ SEC Filings Service: index, search, and retrieve SEC filings (8-K, 6-K, 20-F, 40
 and extract exhibit content (e.g., EX-99.1 press releases).
 """
 
+import asyncio
 import logging
+import time
 from datetime import datetime, timezone
 from typing import Dict, List, Optional, Set, Tuple
 
@@ -45,6 +47,8 @@ class SECFilingsService:
         Returns the number of filings indexed (inserted or updated).
         """
         ticker = ticker.upper()
+        self._http.set_deadline(60.0)
+        try:
             cik = await self._http.get_company_cik(ticker)
             if not cik:
                 raise ValueError(f"Could not find CIK for ticker {ticker}")
@@ -166,6 +170,8 @@ class SECFilingsService:
                 await db.commit()
             logger.info(f"Indexed {indexed_count} filings for {ticker}")
             return indexed_count
+        finally:
+            self._http.clear_deadline()
 
     # ------------------------------------------------------------------
     # search_filings: query DB with filters
@@ -235,6 +241,10 @@ class SECFilingsService:
         self, db: AsyncSession, accession_number: str
     ) -> List[Dict]:
         """Get list of documents for a filing. Caches in documents_json column."""
+        _owned_deadline = self._http.remaining_time() is None
+        if _owned_deadline:
+            self._http.set_deadline(30.0)
+        try:
             result = await db.execute(
                 select(SECFiling).where(SECFiling.accession_number == accession_number)
             )
@@ -298,6 +308,9 @@ class SECFilingsService:
                 await db.commit()
 
             return documents
+        finally:
+            if _owned_deadline:
+                self._http.clear_deadline()
 
     # ------------------------------------------------------------------
     # get_exhibit_content: extract exhibit text
@@ -310,6 +323,8 @@ class SECFilingsService:
         exhibit_type: str = "EX-99.1",
     ) -> Dict:
         """Download and return the content of a specific exhibit."""
+        self._http.set_deadline(30.0)
+        try:
             documents = await self.get_filing_documents(db, accession_number)
             if not documents:
                 raise ValueError(f"No documents found for filing {accession_number}")
@@ -360,6 +375,99 @@ class SECFilingsService:
                 "filename": filename,
                 "url": url,
             }
+        finally:
+            self._http.clear_deadline()
+
+
+    # ------------------------------------------------------------------
+    # search_filings_bulk: bulk filing search for multiple tickers
+    # ------------------------------------------------------------------
+
+    async def search_filings_bulk(
+        self,
+        db: AsyncSession,
+        tickers: List[str],
+        form_types: Optional[Set[str]] = None,
+        start_date: Optional[datetime] = None,
+        end_date: Optional[datetime] = None,
+        limit_per_ticker: int = 20,
+    ) -> List[Dict]:
+        """Bulk search filings for multiple tickers. Auto-indexes missing tickers in parallel."""
+        t0 = time.monotonic()
+        tickers = [t.upper() for t in tickers]
+
+        # Identify which tickers already have indexed filings
+        conditions = [SECFiling.ticker.in_(tickers)]
+        if form_types:
+            conditions.append(SECFiling.form_type.in_(form_types))
+        count_result = await db.execute(
+            select(SECFiling.ticker, func.count().label("cnt"))
+            .where(and_(*conditions))
+            .group_by(SECFiling.ticker)
+        )
+        indexed_counts = {row.ticker: row.cnt for row in count_result}
+        missing = [t for t in tickers if indexed_counts.get(t, 0) == 0]
+
+        # Index missing tickers in parallel (Semaphore(4) to not overwhelm SEC)
+        if missing:
+            sem = asyncio.Semaphore(4)
+
+            async def _index_one(ticker: str) -> None:
+                async with sem:
+                    try:
+                        await asyncio.wait_for(
+                            self.index_filings(db, ticker, form_types=form_types),
+                            timeout=60,
+                        )
+                    except Exception as e:
+                        logger.warning(f"Bulk index failed for {ticker}: {e}")
+
+            await asyncio.gather(*[_index_one(t) for t in missing])
+
+        # Fetch results for all tickers from DB
+        results = []
+        for ticker in tickers:
+            ticker_conditions = [SECFiling.ticker == ticker]
+            if form_types:
+                ticker_conditions.append(SECFiling.form_type.in_(form_types))
+            if start_date:
+                ticker_conditions.append(SECFiling.filing_date >= start_date)
+            if end_date:
+                ticker_conditions.append(SECFiling.filing_date <= end_date)
+
+            try:
+                count_res = await db.execute(
+                    select(func.count())
+                    .select_from(SECFiling)
+                    .where(and_(*ticker_conditions))
+                )
+                total = count_res.scalar() or 0
+
+                rows = await db.execute(
+                    select(SECFiling)
+                    .where(and_(*ticker_conditions))
+                    .order_by(SECFiling.filing_date.desc())
+                    .limit(limit_per_ticker)
+                )
+                filings = rows.scalars().all()
+                results.append({
+                    "ticker": ticker,
+                    "success": True,
+                    "filings": list(filings),
+                    "total_count": total,
+                    "error": None,
+                })
+            except Exception as e:
+                results.append({
+                    "ticker": ticker,
+                    "success": False,
+                    "filings": [],
+                    "total_count": 0,
+                    "error": str(e),
+                })
+
+        elapsed = time.monotonic() - t0
+        return results, elapsed
 
 
 # Module-level singleton