# gap_down

Today opened 3%+ below prior close.

A boolean signal (flag) column on the Tickerbot computed state table (20,798+ ticker rows) — computed by the platform, queryable by bare name across the API. Values are NULL on rows the signal doesn't apply to.

Definition: `(close_prev - open) / close_prev >= 0.03 AND price still below close_prev (gap has not been reclaimed)`

- Group: Price action
- Category: Gaps
- Type: event
- Update cadence: 1 min · mkt hrs
- Intervals: 1m/1h/1d
- Universe: all tickers
- History: full · since 2003
- Firing: sticky

## Query it

Every applicable form factor, grouped by endpoint family. Response payloads are real captures, sampled 2026-08-18 and trimmed; your run's values and dates will differ.

### Use signals — `/v2/signals/{signal}`

One signal across the market: who matches now, who matched then, and a push when someone starts. (https://tickerbot.io/docs/endpoints/signals.md)

#### Live — every ticker where it fires now

```bash
curl "https://api.tickerbot.io/v2/signals/gap_down" \
  -H "Authorization: Bearer YOUR_KEY"
```

Response (sampled 2026-08-18, trimmed):

```json
{
 "as_of": "2026-08-18T00:23:55.101Z",
 "signal": "gap_down",
 "condition": null,
 "universe": null,
 "count": 2,
 "results": [
  {
   "ticker": "ABLV",
   "name": "Able View Global Inc. Class B Ordinary Shares",
   "value": true
  },
  {
   "ticker": "ACXP",
   "name": "Acurx Pharmaceuticals, Inc. Common Stock",
   "value": true
  }
 ]
}
```

#### As-of — the same read at a past date

```bash
curl "https://api.tickerbot.io/v2/signals/gap_down?asof=2026-05-20" \
  -H "Authorization: Bearer YOUR_KEY"
```

Response (sampled 2026-08-18, trimmed):

```json
{
 "as_of": "2026-05-20",
 "signal": "gap_down",
 "condition": null,
 "universe": null,
 "count": 2,
 "results": [
  {
   "ticker": "AACO",
   "name": "Abony Acquisition Corp. I Class A Ordinary Share",
   "value": true
  },
  {
   "ticker": "AAP",
   "name": "ADVANCE AUTO PARTS INC",
   "value": true
  }
 ]
}
```

#### Subscribe — webhook when a ticker starts matching

```bash
curl -X POST "https://api.tickerbot.io/v2/signals/gap_down/subscribe" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_KEY" \
  -d '{"target_url": "https://example.com/hooks/tickerbot"}'
```

Returns 201 with the created webhook — the same shape as GET /v2/webhooks/{id}, plus a one-time signing_secret for HMAC verification.

### Use scan — `/v2/scan`

The whole market through a WHERE clause — this signal composed freely with any other column. (https://tickerbot.io/docs/endpoints/scan.md)

#### Live — the whole market, filtered on this signal

```bash
curl -G "https://api.tickerbot.io/v2/scan" \
  --data-urlencode "q=gap_down" \
  -H "Authorization: Bearer YOUR_KEY"
```

Response (sampled 2026-08-18, trimmed):

```json
{
 "as_of": "2026-08-18T00:23:56.102Z",
 "query": {
  "q": "gap_down",
  "limit": 2,
  "order": "day_change_pct",
  "dir": "desc",
  "fields": [],
  "full": false,
  "universe": null,
  "asset_class": null
 },
 "count": 2,
 "results": [
  {
   "ticker": "RNWWW",
   "name": "ReNew Energy Global plc Warrant",
   "asset_class": "stocks",
   "asset_type": "WARRANT",
   "price": 0.0057,
   "day_change_pct": 4.74,
   "gap_pct": null,
   "relative_volume": 9.2746,
   "market_cap": null
  },
  {
   "ticker": "OSRH",
   "name": "OSR Health, Inc. Common Stock",
   "asset_class": "stocks",
   "asset_type": "CS",
   "price": 0.549,
   "day_change_pct": 0.7373,
   "gap_pct": 0.0981,
   "relative_volume": null,
   "market_cap": 11097506
  }
 ]
}
```

#### As-of — the same scan at a past date

```bash
curl -G "https://api.tickerbot.io/v2/scan" \
  --data-urlencode "q=gap_down" \
  -d "asof=2026-05-20" \
  -H "Authorization: Bearer YOUR_KEY"
```

Response (sampled 2026-08-18, trimmed):

```json
{
 "as_of": "2026-05-20",
 "query": {
  "q": "gap_down",
  "asof": "2026-05-20",
  "interval": "auto",
  "limit": 2,
  "order": "day_change_pct",
  "dir": "desc",
  "fields": [],
  "full": false,
  "universe": null,
  "asset_class": null
 },
 "count": 2,
 "results": [
  {
   "ticker": "HCWB",
   "name": "HCW Biologics Inc. Common Stock",
   "asset_class": "stocks",
   "asset_type": "CS",
   "price": 14.58,
   "day_change_pct": 129.2452830188679,
   "gap_pct": -1.8867924528301903,
   "relative_volume": 8.19713206109058,
   "market_cap": 5491965
  },
  {
   "ticker": "WGSWW",
   "name": "GeneDx Holdings Corp. Warrant",
   "asset_class": "stocks",
   "asset_type": "WARRANT",
   "price": 0.0064,
   "day_change_pct": 82.85714285714286,
   "gap_pct": -20,
   "relative_volume": 8.034842009949166,
   "market_cap": 184305
  }
 ]
}
```

#### Subscribe — webhook on a market-wide condition

```bash
curl -X POST "https://api.tickerbot.io/v2/scan/subscribe" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_KEY" \
  -d '{"q": "gap_down", "target_url": "https://example.com/hooks/tickerbot"}'
```

Returns 201 with the created webhook object; deliveries carry the tickers matching the condition at each evaluation.

### Use series — `/v2/series`

Its history over time, on one aligned grid. (https://tickerbot.io/docs/endpoints/series.md)

#### History — the column on an aligned time grid

```bash
curl "https://api.tickerbot.io/v2/series?tickers=AAPL,MSFT&columns=close,gap_down" \
  -H "Authorization: Bearer YOUR_KEY"
```

Response (sampled 2026-08-18, trimmed):

```json
{
 "as_of": "2026-08-18T00:23:58.038Z",
 "interval": "1d",
 "tickers": [
  "AAPL",
  "MSFT"
 ],
 "columns": [
  "close",
  "gap_down"
 ],
 "count": 6,
 "series": {
  "AAPL": [
   {
    "t": "2026-08-12",
    "close": 302.25,
    "gap_down": false
   },
   {
    "t": "2026-08-13",
    "close": 305.26,
    "gap_down": false
   },
   {
    "t": "2026-08-14",
    "close": 305.93,
    "gap_down": false
   }
  ],
  "MSFT": [
   {
    "t": "2026-08-12",
    "close": 492.43,
    "gap_down": true
   },
   {
    "t": "2026-08-13",
    "close": 496.88,
    "gap_down": false
   },
   {
    "t": "2026-08-14",
    "close": 495.4,
    "gap_down": false
   }
  ]
 }
}
```

### Use events — `/v2/events`

The flag as a timeline: each edge as a point event, and the spans it stayed true. (https://tickerbot.io/docs/endpoints/events.md)

#### Firings — every enter edge as a point event

```bash
curl -G "https://api.tickerbot.io/v2/events" \
  -d "kind=signal" -d "signal=gap_down" -d "transition=enter" -d "since=2026-01-10" \
  -H "Authorization: Bearer YOUR_KEY"
```

Response (sampled 2026-08-18, trimmed):

```json
{
 "as_of": "2026-08-18T00:23:58.208Z",
 "query": {
  "kind": "signal",
  "tickers": null,
  "universe": null,
  "since": "2026-01-10T00:00:00.000Z",
  "until": null,
  "limit": 2,
  "signal": "gap_down",
  "transition": "enter"
 },
 "count": 2,
 "results": [
  {
   "ticker": "DXYZ",
   "ts": "2026-08-17T23:59:36.668Z",
   "kind": "signal",
   "payload": {
    "signal": "gap_down",
    "transition": "enter",
    "price": 33.907,
    "definition_version": 6
   }
  },
  {
   "ticker": "SPCM",
   "ts": "2026-08-17T23:58:35.199Z",
   "kind": "signal",
   "payload": {
    "signal": "gap_down",
    "transition": "enter",
    "price": 16.851,
    "definition_version": 6
   }
  }
 ]
}
```

#### Spans — when it was true for one ticker (DXYZ)

```bash
curl "https://api.tickerbot.io/v2/signals/gap_down/DXYZ/events" \
  -H "Authorization: Bearer YOUR_KEY"
```

Response (sampled 2026-08-18, trimmed):

```json
{
 "as_of": "2026-08-18T00:23:58.329Z",
 "ticker": "DXYZ",
 "signal": "gap_down",
 "count": 2,
 "events": [
  {
   "started_at": "2026-08-17T23:59:36.668Z",
   "ended_at": null,
   "start_price": 33.907,
   "end_price": null,
   "definition_version": 6
  },
  {
   "started_at": "2026-08-17T23:51:36.535Z",
   "ended_at": "2026-08-17T23:55:38.729Z",
   "start_price": 33.935,
   "end_price": 33.953,
   "definition_version": 6
  }
 ]
}
```

## Related signals (Gaps)

- [gap](https://tickerbot.io/docs/signals/gap.md)
- [gap_down_extreme](https://tickerbot.io/docs/signals/gap_down_extreme.md)
- [gap_filled_today](https://tickerbot.io/docs/signals/gap_filled_today.md)
- [gap_pct](https://tickerbot.io/docs/signals/gap_pct.md)
- [gap_up](https://tickerbot.io/docs/signals/gap_up.md)
- [gap_up_extreme](https://tickerbot.io/docs/signals/gap_up_extreme.md)

---

Full catalog: https://tickerbot.io/docs/signals.md · Schema: https://tickerbot.io/docs/schema.md · Interactive: https://tickerbot.io/explore?signal=gap_down · HTML: https://tickerbot.io/docs/signals/gap_down/