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GET
Call/put OI per expiry
Open interest aggregated by expiration with calls and puts split. ?weekly_only=true excludes monthly + quarterly anchors.

Units

USD notional ≈ total_oi × spot. When present on /v2/options/expiry-summary, notional_oi_usd is that product. Filter with ?exchanges= where supported. Venue list: Venue coverage.

See also

OPEX calendar

Expiry summary

Venue coverage

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
exchanges
string | null

Comma-separated venue filter, e.g. deribit,bybit. Restricts the response to those venues' contribution, recomputed from the per-venue breakdown - it is a re-aggregation, not a post-hoc scaling. Unknown names are ignored; an all-invalid filter returns every venue rather than nothing. Venues: deribit, bybit, okx, binance, derive, thalex, delta_india, delta. A venue with no contracts on the surface contributes zero - use GET /v2/status to tell that apart from a venue that is switched off.

dte_min
integer | null

DTE lower bound

Required range: 0 <= x <= 720
dte_max
integer | null

DTE upper bound

Required range: 0 <= x <= 720
weekly_only
boolean
default:false

Exclude monthly + quarterly anchors (last-Friday-of-month).

Response

Successful Response