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Concepts › Signals › Price › Highs & lows

at_20d_low

Price is at or below the 20-day low.

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

At a glance

Definition
close <= low_20d
Typestate (boolean)
GroupPrice
CategoryHighs & lows
Update cadence1 min · mkt hrs
Intervals1m/1h/1d
Universeall tickers
Historyfull · since 2003
Firingcontinuous

Rolling-window highs and lows (5-day, 20-day, 52-week), their dates and distances, and the at/approaching/breaking signals those levels own.

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/at_20d_low" \
  -H "Authorization: Bearer YOUR_KEY"
Response (sampled 2026-08-18, trimmed)
{
 "as_of": "2026-08-18T00:22:45.258Z",
 "signal": "at_20d_low",
 "condition": null,
 "universe": null,
 "count": 2,
 "results": [
  {
   "ticker": "AACOW",
   "name": "Abony Acquisition Corp. I Warrants",
   "value": true
  },
  {
   "ticker": "AAOZ",
   "name": "Tradr 2X Short AAOI Daily ETF",
   "value": true
  }
 ]
}
As-of — the same read at a past date
curl "https://api.tickerbot.io/v2/signals/at_20d_low?asof=2026-05-20" \
  -H "Authorization: Bearer YOUR_KEY"
Response (sampled 2026-08-18, trimmed)
{
 "as_of": "2026-05-20",
 "signal": "at_20d_low",
 "condition": null,
 "universe": null,
 "count": 2,
 "results": [
  {
   "ticker": "AACBR",
   "name": "Artius II Acquisition Inc. Rights",
   "value": true
  },
  {
   "ticker": "ACAAU",
   "name": "Averin Capital Acquisition Corp. Units",
   "value": true
  }
 ]
}
Subscribe — webhook when a ticker starts matching
curl -X POST "https://api.tickerbot.io/v2/signals/at_20d_low/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=at_20d_low" \
  -H "Authorization: Bearer YOUR_KEY"
Response (sampled 2026-08-18, trimmed)
{
 "as_of": "2026-08-18T00:22:45.735Z",
 "query": {
  "q": "at_20d_low",
  "limit": 2,
  "order": "day_change_pct",
  "dir": "desc",
  "fields": [],
  "full": false,
  "universe": null,
  "asset_class": null
 },
 "count": 2,
 "results": [
  {
   "ticker": "ALDFW",
   "name": "Aldel Financial II Inc. Warrants",
   "asset_class": "stocks",
   "asset_type": "WARRANT",
   "price": 0.29,
   "day_change_pct": 0.0741,
   "gap_pct": 0.0741,
   "relative_volume": null,
   "market_cap": null
  },
  {
   "ticker": "TVACW",
   "name": "Texas Ventures Acquisition III Corp Warrants",
   "asset_class": "stocks",
   "asset_type": "WARRANT",
   "price": 0.485,
   "day_change_pct": 0.0319,
   "gap_pct": 0.0511,
   "relative_volume": 0.2128,
   "market_cap": null
  }
 ]
}
As-of — the same scan at a past date
curl -G "https://api.tickerbot.io/v2/scan" \
  --data-urlencode "q=at_20d_low" \
  -d "asof=2026-05-20" \
  -H "Authorization: Bearer YOUR_KEY"
Response (sampled 2026-08-18, trimmed)
{
 "as_of": "2026-05-20",
 "query": {
  "q": "at_20d_low",
  "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": "MUNB",
   "name": "Northern Trust 2035 Tax-Exempt Distributing Ladder ETF",
   "asset_class": "stocks",
   "asset_type": "ETF",
   "price": 100.18,
   "day_change_pct": 0.09992006394884945,
   "gap_pct": 0.09992006394884945,
   "relative_volume": null,
   "market_cap": null
  },
  {
   "ticker": "VUSI",
   "name": "Voya Ultra Short Income ETF",
   "asset_class": "stocks",
   "asset_type": "ETF",
   "price": 50.165,
   "day_change_pct": 0.09977052778608632,
   "gap_pct": 0.089793475007472,
   "relative_volume": null,
   "market_cap": null
  }
 ]
}
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": "at_20d_low", "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,at_20d_low" \
  -H "Authorization: Bearer YOUR_KEY"
Response (sampled 2026-08-18, trimmed)
{
 "as_of": "2026-08-18T00:22:48.045Z",
 "interval": "1d",
 "tickers": [
  "AAPL",
  "MSFT"
 ],
 "columns": [
  "close",
  "at_20d_low"
 ],
 "count": 6,
 "series": {
  "AAPL": [
   {
    "t": "2026-08-12",
    "close": 302.25,
    "at_20d_low": false
   },
   {
    "t": "2026-08-13",
    "close": 305.26,
    "at_20d_low": false
   },
   {
    "t": "2026-08-14",
    "close": 305.93,
    "at_20d_low": false
   }
  ],
  "MSFT": [
   {
    "t": "2026-08-12",
    "close": 492.43,
    "at_20d_low": false
   },
   {
    "t": "2026-08-13",
    "close": 496.88,
    "at_20d_low": false
   },
   {
    "t": "2026-08-14",
    "close": 495.4,
    "at_20d_low": 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=at_20d_low" -d "transition=enter" -d "since=2026-01-10" \
  -H "Authorization: Bearer YOUR_KEY"
Response (sampled 2026-08-18, trimmed)
{
 "as_of": "2026-08-18T00:22:48.190Z",
 "query": {
  "kind": "signal",
  "tickers": null,
  "universe": null,
  "since": "2026-01-10T00:00:00.000Z",
  "until": null,
  "limit": 2,
  "signal": "at_20d_low",
  "transition": "enter"
 },
 "count": 2,
 "results": [
  {
   "ticker": "KRG",
   "ts": "2026-08-17T23:58:35.199Z",
   "kind": "signal",
   "payload": {
    "signal": "at_20d_low",
    "transition": "enter",
    "price": 26.037,
    "definition_version": 6
   }
  },
  {
   "ticker": "IBDT",
   "ts": "2026-08-17T23:58:35.199Z",
   "kind": "signal",
   "payload": {
    "signal": "at_20d_low",
    "transition": "enter",
    "price": 24.941,
    "definition_version": 6
   }
  }
 ]
}
Spans — when it was true for one ticker (KRG)
curl "https://api.tickerbot.io/v2/signals/at_20d_low/KRG/events" \
  -H "Authorization: Bearer YOUR_KEY"
Response (sampled 2026-08-18, trimmed)
{
 "as_of": "2026-08-18T00:22:48.344Z",
 "ticker": "KRG",
 "signal": "at_20d_low",
 "count": 2,
 "events": [
  {
   "started_at": "2026-08-17T23:58:35.199Z",
   "ended_at": null,
   "start_price": 26.037,
   "end_price": null,
   "definition_version": 6
  },
  {
   "started_at": "2026-08-17T10:42:32.012Z",
   "ended_at": "2026-08-17T11:00:59.597Z",
   "start_price": 26.11,
   "end_price": 26.466,
   "definition_version": 6
  }
 ]
}

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

Related signals — Highs & lows