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Concepts › Signals › Price action › Gaps

gap_down_extreme

Today opened 10%+ below prior close.

Watch this signal live on real tickers: Open in Explore →

At a glance

Definition
(close_prev - open) / close_prev >= 0.10
Typeevent (boolean)
GroupPrice action
CategoryGaps
Update cadence1 min · mkt hrs
Intervals1m/1h/1d
Universeall tickers
Historyfull · since 2003
Firingsticky
Typical rolemajor_catalysts · event-driven alerts

Opening gaps: size, direction, extremes, and intraday fill.

Query it

Every applicable form factor, grouped by endpoint family. Swap YOUR_KEY for the value from /dashboard/keys. 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. Docs →

Live — every ticker where it fires now
curl "https://api.tickerbot.io/v2/signals/gap_down_extreme" \
  -H "Authorization: Bearer YOUR_KEY"
Response (sampled 2026-08-18, trimmed)
{
 "as_of": "2026-08-18T00:23:57.159Z",
 "signal": "gap_down_extreme",
 "condition": null,
 "universe": null,
 "count": 2,
 "results": [
  {
   "ticker": "ACMM",
   "name": "Corgi ACMR 2x Daily ETF",
   "value": true
  },
  {
   "ticker": "ACXP",
   "name": "Acurx Pharmaceuticals, Inc. Common Stock",
   "value": true
  }
 ]
}
As-of — the same read at a past date
curl "https://api.tickerbot.io/v2/signals/gap_down_extreme?asof=2026-05-20" \
  -H "Authorization: Bearer YOUR_KEY"
Response (sampled 2026-08-18, trimmed)
{
 "as_of": "2026-05-20",
 "signal": "gap_down_extreme",
 "condition": null,
 "universe": null,
 "count": 2,
 "results": [
  {
   "ticker": "ACAAW",
   "name": "Averin Capital Acquisition Corp. Warrants",
   "value": true
  },
  {
   "ticker": "ACONW",
   "name": "Aclarion, Inc. Warrant",
   "value": true
  }
 ]
}
Subscribe — webhook when a ticker starts matching
curl -X POST "https://api.tickerbot.io/v2/signals/gap_down_extreme/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. Docs →

Live — the whole market, filtered on this signal
curl -G "https://api.tickerbot.io/v2/scan" \
  --data-urlencode "q=gap_down_extreme" \
  -H "Authorization: Bearer YOUR_KEY"
Response (sampled 2026-08-18, trimmed)
{
 "as_of": "2026-08-18T00:23:57.748Z",
 "query": {
  "q": "gap_down_extreme",
  "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": "WETO",
   "name": "Wetour Robotics Limited Ordinary Shares",
   "asset_class": "stocks",
   "asset_type": "CS",
   "price": 35.36,
   "day_change_pct": 3.3017,
   "gap_pct": 0.236,
   "relative_volume": 3.2667,
   "market_cap": 6746976
  }
 ]
}
As-of — the same scan at a past date
curl -G "https://api.tickerbot.io/v2/scan" \
  --data-urlencode "q=gap_down_extreme" \
  -d "asof=2026-05-20" \
  -H "Authorization: Bearer YOUR_KEY"
Response (sampled 2026-08-18, trimmed)
{
 "as_of": "2026-05-20",
 "query": {
  "q": "gap_down_extreme",
  "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": "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
  },
  {
   "ticker": "VEEAW",
   "name": "Veea Inc. Warrant",
   "asset_class": "stocks",
   "asset_type": "WARRANT",
   "price": 0.09,
   "day_change_pct": 23.796423658872072,
   "gap_pct": -24.896836313617605,
   "relative_volume": null,
   "market_cap": 4110336
  }
 ]
}
Subscribe — webhook on a market-wide condition
curl -X POST "https://api.tickerbot.io/v2/scan/subscribe" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_KEY" \
  -d '{"q": "gap_down_extreme", "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. Docs →

History — the column on an aligned time grid
curl "https://api.tickerbot.io/v2/series?tickers=AAPL,MSFT&columns=close,gap_down_extreme" \
  -H "Authorization: Bearer YOUR_KEY"
Response (sampled 2026-08-18, trimmed)
{
 "as_of": "2026-08-18T00:24:00.059Z",
 "interval": "1d",
 "tickers": [
  "AAPL",
  "MSFT"
 ],
 "columns": [
  "close",
  "gap_down_extreme"
 ],
 "count": 6,
 "series": {
  "AAPL": [
   {
    "t": "2026-08-12",
    "close": 302.25,
    "gap_down_extreme": false
   },
   {
    "t": "2026-08-13",
    "close": 305.26,
    "gap_down_extreme": false
   },
   {
    "t": "2026-08-14",
    "close": 305.93,
    "gap_down_extreme": false
   }
  ],
  "MSFT": [
   {
    "t": "2026-08-12",
    "close": 492.43,
    "gap_down_extreme": false
   },
   {
    "t": "2026-08-13",
    "close": 496.88,
    "gap_down_extreme": false
   },
   {
    "t": "2026-08-14",
    "close": 495.4,
    "gap_down_extreme": false
   }
  ]
 }
}

Use events /v2/events

The flag as a timeline: each edge as a point event, and the spans it stayed true. Docs →

Firings — every enter edge as a point event
curl -G "https://api.tickerbot.io/v2/events" \
  -d "kind=signal" -d "signal=gap_down_extreme" -d "transition=enter" -d "since=2026-01-10" \
  -H "Authorization: Bearer YOUR_KEY"
Response (sampled 2026-08-18, trimmed)
{
 "as_of": "2026-08-18T00:24:00.358Z",
 "query": {
  "kind": "signal",
  "tickers": null,
  "universe": null,
  "since": "2026-01-10T00:00:00.000Z",
  "until": null,
  "limit": 2,
  "signal": "gap_down_extreme",
  "transition": "enter"
 },
 "count": 2,
 "results": [
  {
   "ticker": "SBXE.U",
   "ts": "2026-08-17T22:17:35.954Z",
   "kind": "signal",
   "payload": {
    "signal": "gap_down_extreme",
    "transition": "enter",
    "price": 9.11,
    "definition_version": 6
   }
  },
  {
   "ticker": "PLUNr",
   "ts": "2026-08-17T22:17:35.954Z",
   "kind": "signal",
   "payload": {
    "signal": "gap_down_extreme",
    "transition": "enter",
    "price": 0.1255,
    "definition_version": 6
   }
  }
 ]
}
Spans — when it was true for one ticker (SBXE.U)
curl "https://api.tickerbot.io/v2/signals/gap_down_extreme/SBXE.U/events" \
  -H "Authorization: Bearer YOUR_KEY"
Response (sampled 2026-08-18, trimmed)
{
 "as_of": "2026-08-18T00:24:00.604Z",
 "ticker": "SBXE.U",
 "signal": "gap_down_extreme",
 "count": 2,
 "events": [
  {
   "started_at": "2026-08-17T22:17:35.954Z",
   "ended_at": null,
   "start_price": 9.11,
   "end_price": null,
   "definition_version": 6
  },
  {
   "started_at": "2026-08-10T11:13:28.013Z",
   "ended_at": "2026-08-10T13:27:32.868Z",
   "start_price": 9.18,
   "end_price": 9.955,
   "definition_version": 6
  }
 ]
}

Same grammar on scan, series, and webhooks; state reads take ?asof= for point-in-time answers.

Related signals — Gaps