fix: refresh same-day OHLCV bars

app/scheduler.py

@@ -518,7 +518,7 @@ async def collect_ohlcv(
     Uses AlpacaOHLCVProvider. Processes each ticker independently.
     On rate limit, records last successful ticker for resume.
         Start date is resolved by ingestion progress:
-            - existing ticker: resume from last_ingested_date + 1
+            - existing ticker: overlap last_ingested_date so partial bars refresh
             - new ticker: backfill the configured history window
 
     ``full_backfill`` forces every ticker to re-fetch the full
@@ -1496,8 +1496,8 @@ _DAILY_PIPELINE_STEPS = [
     ("alerts", "dispatch_alerts_job"),
 ]
 
-# Near-close (~15:30 ET Mon–Fri): refresh in-progress day-t bars (already how
+# Near-close (~15:30 ET Mon–Fri): refresh in-progress day-t bars (incremental
-# the intraday pipeline keeps the dashboard live), then the only daily
+# ingestion overlaps the latest stored session), then the only daily
 # qualifying R:R scan, then Telegram immediately so manual fills can still hit
 # MOC cutoffs (~15:50/15:55). Under a 15-minute delayed SIP feed a 15:30 scan
 # may see ~15:15 prices — immaterial for a 12-1 momentum signal.

app/services/ingestion_service.py

@@ -129,7 +129,12 @@ async def fetch_and_ingest(
         if bar_count < minimum_backfill_bars:
             start_date = backfill_start
         elif progress is not None:
-            start_date = progress.last_ingested_date + timedelta(days=1)
+            # Re-fetch the latest stored session so an in-progress daily bar can
+            # be overwritten as the market moves. Starting one day later makes
+            # every subsequent intraday, near-close, and manual refresh skip
+            # today's bar once the first partial snapshot has been stored.
+            # The price-store upsert keeps this one-session overlap idempotent.
+            start_date = progress.last_ingested_date
         else:
             start_date = backfill_start
 

frontend/src/pages/TickerDetailPage.tsx

@@ -64,10 +64,43 @@ function timeAgo(iso: string): string {
   return `${days}d ago`;
 }
 
+function marketDate(date = new Date()): string {
+  const parts = new Intl.DateTimeFormat('en-US', {
+    timeZone: 'America/New_York',
+    year: 'numeric',
+    month: '2-digit',
+    day: '2-digit',
+  }).formatToParts(date);
+  const value = (type: Intl.DateTimeFormatPartTypes) =>
+    parts.find((part) => part.type === type)?.value ?? '';
+  return value('year') + '-' + value('month') + '-' + value('day');
+}
+
+function formatSessionDate(isoDate: string): string {
+  if (isoDate === marketDate()) return 'Today';
+
+  // Parse date-only market sessions explicitly. Parsing YYYY-MM-DD directly as
+  // a Date means midnight UTC and makes today's bar look many hours old.
+  const [year, month, day] = isoDate.split('-').map(Number);
+  if (!year || !month || !day) return isoDate;
+  return new Intl.DateTimeFormat(undefined, {
+    month: 'short',
+    day: 'numeric',
+    year: year === new Date().getFullYear() ? undefined : 'numeric',
+    timeZone: 'UTC',
+  }).format(new Date(Date.UTC(year, month - 1, day)));
+}
+
+function formatOHLCVFreshness(sessionDate: string, updatedAt?: string | null): string {
+  const session = formatSessionDate(sessionDate);
+  return updatedAt ? session + ' · updated ' + timeAgo(updatedAt) : session;
+}
+
 interface DataStatusItem {
   label: string;
   available: boolean;
   timestamp?: string | null;
+  timestampLabel?: string | null;
   selector: FetchSelector;   // what a refresh of this row fetches
   paid?: boolean;            // provider call that may cost money/quota
 }
@@ -100,7 +133,7 @@ function DataFreshnessBar({
           }`} />
           <span className="text-xs text-gray-400">{item.label}</span>
           {item.available && item.timestamp ? (
-            <span className="text-[10px] text-gray-500">{timeAgo(item.timestamp)}</span>
+            <span className="text-[10px] text-gray-500">{item.timestampLabel ?? timeAgo(item.timestamp)}</span>
           ) : !item.available ? (
             <span className="text-[10px] text-gray-600">no data</span>
           ) : null}
@@ -171,10 +204,16 @@ export default function TickerDetailPage() {
   const dataStatus: DataStatusItem[] = useMemo(() => [
     {
       label: 'OHLCV',
-      // Market age of the latest bar (session date), not DB insert time —
+      // Keep the market session date distinct from the last successful bar
-      // created_at stays frozen when the provider returns no new sessions.
+      // write; treating YYYY-MM-DD as an instant makes today's session look old.
       available: !!ohlcv.data && ohlcv.data.length > 0,
       timestamp: ohlcv.data?.[ohlcv.data.length - 1]?.date,
+      timestampLabel: ohlcv.data?.length
+        ? formatOHLCVFreshness(
+            ohlcv.data[ohlcv.data.length - 1].date,
+            ohlcv.data[ohlcv.data.length - 1].created_at,
+          )
+        : null,
       selector: ['ohlcv'] as FetchSelector,
       paid: true,
     },

tests/unit/test_ingestion_service.py

@@ -6,6 +6,8 @@ from datetime import date, timedelta
 
 import pytest
 
+from app.models.ohlcv import OHLCVRecord
+from app.models.settings import IngestionProgress
 from app.models.ticker import Ticker
 from app.providers.protocol import OHLCVData
 from app.services import ingestion_service as svc
@@ -18,9 +20,12 @@ async def session():
         yield s
 
 
-async def _add_ticker(session, symbol: str) -> None:
+async def _add_ticker(session, symbol: str) -> Ticker:
-    session.add(Ticker(symbol=symbol))
+    ticker = Ticker(symbol=symbol)
+    session.add(ticker)
     await session.commit()
+    await session.refresh(ticker)
+    return ticker
 
 
 def _bars(symbol: str, n: int) -> list[OHLCVData]:
@@ -51,6 +56,50 @@ async def test_happy_path_ingests_bars(session):
     assert result.records_ingested == 3
 
 
+async def test_incremental_fetch_overlaps_latest_session_and_updates_partial_bar(session):
+    """Once today exists, a live refresh must fetch and overwrite it again."""
+    ticker = await _add_ticker(session, "LIVE")
+    today = date.today()
+    session.add_all([
+        OHLCVRecord(
+            ticker_id=ticker.id,
+            date=today - timedelta(days=i),
+            open=100.0,
+            high=101.0,
+            low=99.0,
+            close=100.0,
+            volume=1000,
+        )
+        for i in range(200)
+    ])
+    session.add(IngestionProgress(ticker_id=ticker.id, last_ingested_date=today))
+    await session.commit()
+
+    provider = MockMarketDataProvider(ohlcv_data=[
+        OHLCVData(
+            ticker="LIVE",
+            date=today,
+            open=100.0,
+            high=124.0,
+            low=99.0,
+            close=123.0,
+            volume=2000,
+        )
+    ])
+    result = await svc.fetch_and_ingest(session, provider, "LIVE")
+
+    assert provider.calls == [{
+        "ticker": "LIVE",
+        "start_date": today,
+        "end_date": today,
+    }]
+    assert result.status == "complete"
+    assert result.records_ingested == 1
+    records = await svc.price_service.query_ohlcv(session, "LIVE", today, today)
+    assert records[0].close == 123.0
+    assert records[0].volume == 2000
+
+
 async def test_empty_fetch_with_existing_history_is_up_to_date(session):
     # Covered ticker, just no new bars in the window → complete, not no_data.
     await _add_ticker(session, "BBB")