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GET
/
options
/
pcr
Put/call ratio
curl --request GET \
  --url https://api.example.com/options/pcr \
  --header 'X-API-Key: <api-key>'
{
  "success": false,
  "error": {
    "code": "UNAUTHORIZED",
    "message": "Invalid API key"
  },
  "meta": {
    "version": "2.0",
    "timestamp": "2026-04-29T12:00:00Z"
  }
}

Documentation Index

Fetch the complete documentation index at: https://docs.backquant.com/llms.txt

Use this file to discover all available pages before exploring further.

OI-weighted put/call ratio - the most-asked-for single sentiment indicator from options data. PCR > 1 means more put OI than call OI (typically defensive / fear bid); PCR < 1 means call-heavy (typically risk-on). Two granularities:
  • ?granularity=intraday - rolling intraday series, refreshed every 30s. Use for live dashboards.
  • ?granularity=daily - one value per UTC day, sourced from the historical store. Use for time-series studies and backtests.
Filter the daily mode with ?days=N (1–365) to control window length.

​
See also

OI by expiry

OI history

Premium tide

Authorizations

​
X-API-Key
string
header
required

Your BackQuant API key (same key as v1)

Headers

​
X-API-Key
string | null

Query Parameters

​
symbol
enum<string>
default:BTCUSDT

Trading symbol: BTCUSDT, ETHUSDT, SOLUSDT, or HYPEUSDT.

Available options:
BTCUSDT,
ETHUSDT,
SOLUSDT,
HYPEUSDT
​
granularity
enum<string>
default:intraday

intraday returns the rolling intraday series; daily returns one row per UTC day.

Available options:
intraday,
daily
​
days
integer
default:30

Trim window for daily mode

Required range: 1 <= x <= 365

Response

Successful Response