Options · Exposure, levels, volatility and OI

Options exposure profile

Modeled exposure repriced over a sweep of underlying prices, with zero crossings.

GET/v1/options/exposure/profileoptionsExposureProfile

API Developer Overnight data: API Pro Streamable History-bounded Dataset: options

On this page

Example request
Parameters
Response
Example response
Related

The net, call and put modeled dealer exposure if the underlying were at each price of a sweep around the current price, the contracts repriced with unchanged strikes and implied volatilities (sticky strike). zero_crossing is the swept price nearest the current price where the net exposure changes sign; for gamma it is the gamma flip level, a model-derived level and not an observed price. Dealer positioning is a model, not observed: with classic_oi the dealer is assumed long the calls and short the puts of the open interest, with flow_adjusted the classified prints since the open interest date adjust it. Public open interest does not identify who holds a position, so the values are estimates of exposure under that assumption.

Example request

curl -sS --get "https://api.ordermap.si/v1/options/exposure/profile" \
  -H "Authorization: Bearer $ORDERMAP_API_KEY" \
  --data-urlencode underlying_symbol=SPXW

const params = new URLSearchParams({
  underlying_symbol: "SPXW",
});
const res = await fetch(`https://api.ordermap.si/v1/options/exposure/profile?${params}`, {
  headers: { Authorization: `Bearer ${process.env.ORDERMAP_API_KEY}` },
});
if (!res.ok) throw new Error(`${res.status} ${await res.text()}`);
const { data, meta } = await res.json();
console.log(data, meta.coverage);

Set ORDERMAP_API_KEY to your key. Replace the dates with a recent trading date.

Parameters

15 parameters, 1 required.

Parameter	Type and limits	Description
`underlying_symbol`queryrequired	stringat most 8 characterspattern ^[A-Za-z][A-Za-z0-9.]{0,7}$	Option root or family: SPX covers the SPX and SPXW roots, SPXW only the weekly root, QQQ, NDXP, RUTW, XSP ...
`date`queryoptional	stringdate	Trading date (YYYY-MM-DD). Default: the current session, else the most recent completed one.
`session`queryoptional	stringrthgthdefault rth	Trading session: rth is the regular session, gth the overnight (global trading hours) session before the trading date. Overnight data requires the Pro plan and exists only for underlyings with an overnight session; GET /v1/options/sessions shows which.
`contract_type`queryoptional	stringcallput	Calls or puts. Omit for both.
`date_of_expiry`queryoptional	stringdate	Only this expiration.
`expirations`queryoptional	array<string>comma-separated in one parameter1 to 64 itemseach at most 128 characterspattern ^[0-9]{4}-[0-9]{2}-[0-9]{2}$	Only these expirations, comma separated (YYYY-MM-DD), at most 64. Unlisted dates are ignored.
`expiry_mode`queryoptional	string0dte1dteweeklymonthlylte30lte90	Expiration set: 0dte, 1dte, weekly (within 7 days), monthly (third-Friday expirations), lte30 or lte90 (within 30 or 90 days).
`min_dte`queryoptional	integermin 0max 3650	Minimum days to expiration (0 = expires on the trading date).
`max_dte`queryoptional	integermin 0max 3650	Maximum days to expiration.
`greek`queryoptional	stringgammadeltavannacharmdefault gamma	The exposure measured: gamma, delta, vanna or charm.
`unit`queryoptional	stringper_percentper_dollarrawdefault per_percent	Scale of the values: per_percent (dollars of dealer hedging per 1% move of the underlying), per_dollar (per $1 move) or raw (shares, or per unit of the greek).
`model`queryoptional	stringclassic_oiflow_adjusteddefault classic_oi	Dealer positioning model: classic_oi (open interest, calls long and puts short) or flow_adjusted (adjusted by classified prints since the open interest date).
`perspective`queryoptional	stringdealercustomerdefault dealer	dealer (default) or customer, which negates the values only.
`range_percent`queryoptional	numbermin 1max 50	Half-width of the sweep in percent of the underlying price. Default: 20 for index and ETF options.
`steps`queryoptional	integerdefault 256min 32max 512	Intervals of the sweep (steps + 1 points).

Response

Status	Meaning	Body
`200`	Successful response.	Schema below
`400`	Invalid, unknown or repeated parameters, or an invalid cursor.	Error object
`401`	Missing or invalid API key.	Error object
`403`	The plan, dataset release or account state does not allow this request.	Error object
`422`	The request is valid but no data exists for it.	Error object
`429`	Rate limit, burst limit or cooldown; wait Retry-After seconds.Retry-After	Error object
`500`	Internal error.	Error object
`503`	Data temporarily unavailable; retry after Retry-After seconds.Retry-After	Error object
`504`	The request timed out.	Error object

Authenticated responses carry the X-RateLimit-* headers (see rate limits); 429 and 503 add Retry-After.

200 response body

dataobjectrequiredModeled exposure over a sweep of underlying prices.30 fields inside
- greekstringrequiredThe measure: gamma, delta, vanna, charm or the heat map metric.
- modelstringrequiredDealer positioning model.classic_oiflow_adjusted
- perspectivestringrequireddealer or customer (customer negates the values).dealercustomer
- pointsarray<object>requiredThe sweep, ascending.4 fields inside
  - call_exposurenumber | nullrequiredCall exposure.
  - net_exposurenumber | nullrequiredNet modeled exposure.
  - put_exposurenumber | nullrequiredPut exposure.
  - underlying_pricenumberrequiredHypothetical underlying price.
- positioning_modelstringrequiredName and version of the positioning assumption, for example oi_signed_proxy-v1.
- rootsarray<string>requiredOption roots included.
- sessionstringrequiredSession valued.rthgthcurball
- side_at_endsobjectrequiredSign of the net exposure at the ends of the sweep (-1, 0 or 1).2 fields inside
  - highintegerrequiredAt the highest swept price.
  - lowintegerrequiredAt the lowest swept price.
- trading_datestringdaterequiredTrading date valued.
- underlying_pricenumber | nullrequiredCurrent underlying price.
- underlying_symbolstringrequiredThe requested underlying.
- unitstringrequiredScale of the values.per_percentper_dollarraw
- unit_labelstringrequiredWhat one unit is, for example usd_per_pct: dollars of dealer hedging per 1% move.
- valuationobjectrequiredWhat the snapshot was valued on.7 fields inside
  - chain_timestampinteger | nullunix-msrequiredTime of the option chain the valuation used. Unix epoch milliseconds (UTC).
  - open_interest_datestring | nulldaterequiredDate of the open interest the positioning is based on.
  - risk_free_ratenumber | nullrequiredContinuously compounded risk-free rate used.
  - timestampinteger | nullunix-msrequiredValuation time. Unix epoch milliseconds (UTC).
  - underlying_pricenumber | nullrequiredUnderlying price used.
  - underlying_stalebooleanrequiredThe underlying price is older than the freshness limit.
  - underlying_timestampinteger | nullunix-msrequiredTime of the underlying price. Unix epoch milliseconds (UTC).
- zero_crossingnumber | nullrequiredSwept price nearest the current price where the net exposure changes sign; for gamma, the gamma flip (model-derived).
- zero_crossing_excluding_0dtenumber | nullrequiredThe zero crossing with the contracts expiring on the trading date removed.
- zero_crossingsarray<number>requiredEvery swept price where the net exposure changes sign.
metaobjectrequiredMeta object

Example response

{
  "data": {
    "greek": "gamma",
    "model": "classic_oi",
    "perspective": "dealer",
    "points": [
      {
        "call_exposure": 1100000000,
        "net_exposure": 320000000,
        "put_exposure": -780000000,
        "underlying_price": 5800
      }
    ],
    "positioning_model": "oi_signed_proxy-v1",
    "roots": [
      "SPX",
      "SPXW"
    ],
    "session": "rth",
    "side_at_ends": {
      "high": -1,
      "low": 1
    },
    "trading_date": "2026-10-16",
    "underlying_price": 6021.4,
    "underlying_symbol": "SPX",
    "unit": "per_percent",
    "unit_label": "usd_per_pct",
    "valuation": {
      "chain_timestamp": 1792160995000,
      "open_interest_date": "2026-10-15",
      "risk_free_rate": 0.0412,
      "timestamp": 1792161000000,
      "underlying_price": 6021.4,
      "underlying_stale": false,
      "underlying_timestamp": 1792160999000
    },
    "zero_crossing": 5934.5,
    "zero_crossing_excluding_0dte": 5961,
    "zero_crossings": [
      5934.5
    ]
  },
  "meta": {
    "as_of": 1760659200123,
    "coverage": {
      "complete": true
    },
    "delay_ms": 0,
    "delayed": false,
    "request_id": "0199f0c2-5a1e-7c3b-9d4e-2b6f8a1c3d5e",
    "source": "opra"
  }
}

Values are illustrative. Missing values are null, never 0.