When greeks and implied volatility are missing from Massive's options snapshot, the pattern tells you which cause you have. If some contracts in a chain have them and others do not, the empty contracts could not be solved at that moment and nothing is wrong with your request. If every contract in an index option chain is empty, check the symbol first: the bare index symbol returns no greeks, and adding the I: prefix fixes it. Massive calculates greeks and implied volatility itself from each contract's quote and the underlying price, so a missing value means the calculation had no answer, not that market data was lost.
Applies to
- Plans: Options Starter, Developer, Advanced and Business. The snapshot is not included in Options Basic. An Options Starter key gets greeks and implied volatility, and both causes described below apply to it.
- Endpoints: /v3/snapshot/options/{underlyingAsset} (the chain), /v3/snapshot/options/{underlyingAsset}/{optionContract} (one contract) and /v3/snapshot (the unified snapshot).
- Asset classes: options, including index options.
What a missing value looks like
A missing value in the options snapshot is an empty greeks object together with no implied_volatility key. The greeks key itself is still in the response, so a check such as "greeks" in result passes and reading delta from it then fails. Test for a non-empty greeks object, or for the implied_volatility key, instead. Across a whole chain, every contract has a greeks key, and the contracts whose greeks object is empty are the same ones that have no implied_volatility. Treat the empty object as "no value right now", never as zero.
In-the-money contracts quoted below intrinsic value
In-the-money contracts whose bid/ask midpoint is below their intrinsic value are the usual reason a single stock or ETF option in the options snapshot has no greeks. Intrinsic value is what the contract is worth if exercised now: the underlying price minus the strike for a call, the strike minus the underlying price for a put, and zero for a contract that is out of the money. Massive solves implied volatility from the midpoint, and for a stock or ETF option a price below intrinsic value cannot be solved, so the snapshot returns an empty greeks object and no implied volatility for that contract.
Index options are the exception. Their details.exercise_style is european, where stock and ETF options show american, and an in-the-money index option quoted below its intrinsic value still comes back with greeks. The index option contracts without greeks are out-of-the-money contracts with a zero bid, described below. An index option gives the index level as underlying_asset.value rather than underlying_asset.price, so use that field to tell whether an index option is in or out of the money.
To check a stock or ETF option yourself:
- Request the contract from the snapshot.
- Compute its intrinsic value from details.strike_price and underlying_asset.price.
- Compare that with last_quote.midpoint. A midpoint below intrinsic value explains the empty greeks object. The snapshot returns last_quote only when your plan includes quotes, and the market data in underlying_asset depends on your stocks plan.
curl -X GET "https://api.massive.com/v3/snapshot/options/AAPL/O:AAPL290119P00640000?apiKey=YOUR_API_KEY"
Response, trimmed:
{
"results": {
"details": {
"contract_type": "put",
"expiration_date": "2029-01-19",
"strike_price": 640,
"ticker": "O:AAPL290119P00640000"
},
"greeks": {},
"last_quote": {
"ask": 305.5,
"bid": 300.5,
"midpoint": 303
},
"underlying_asset": {
"price": 336.49,
"ticker": "AAPL"
}
},
"status": "OK"
}
In this response the AAPL put has an intrinsic value of 640 minus 336.49, or 303.51. Its midpoint of 303.00 is below that, so greeks is empty and there is no implied_volatility key. A live call returns current values, which will differ.
The same split holds across whole chains such as AAPL and SPY. Most of the contracts without greeks are in the money with the midpoint below intrinsic value, computed from each contract's own underlying_asset.price, and in those chains the in-the-money contracts with their midpoint at or above intrinsic value have greeks. Because the calculation uses the contract's current midpoint, the same contract can have greeks at one moment and none the next as its quote moves.
Index options requested without the I: prefix
Index options requested without the I: prefix come back from the options snapshot with no greeks and no implied volatility. The snapshot lists the same contracts for SPX and I:SPX, but with the bare root none of them carries greeks. On the first page of each chain (?limit=250), the two forms return the same 250 contracts, and only the I: form carries greeks:
| Index | Bare root, contracts with greeks | I: prefix, contracts with greeks |
|---|---|---|
| Standard & Poor's 500 | SPX: none | I:SPX: most |
| NASDAQ-100 | NDX: none | I:NDX: most |
| Cboe Volatility Index | VIX: none | I:VIX: most |
| Russell 2000 Index | RUT: none | I:RUT: most |
| Mini Standard & Poor's 500 | XSP: none | I:XSP: most |
The same contract, requested both ways:
curl -X GET "https://api.massive.com/v3/snapshot/options/SPX/O:SPX271217C07800000?apiKey=YOUR_API_KEY"
Response, trimmed:
{
"results": {
"details": { "strike_price": 7800, "ticker": "O:SPX271217C07800000" },
"greeks": {},
"underlying_asset": { "ticker": "I:SPX" }
},
"status": "OK"
}
curl -X GET "https://api.massive.com/v3/snapshot/options/I:SPX/O:SPX271217C07800000?apiKey=YOUR_API_KEY"
Response, trimmed:
{
"results": {
"details": { "strike_price": 7800, "ticker": "O:SPX271217C07800000" },
"greeks": {
"delta": 0.6305240747711062,
"gamma": 0.00025192045850936523,
"theta": -1.1256882289888321,
"vega": 31.889603432405316
},
"implied_volatility": 0.18051788646789865,
"underlying_asset": { "value": 7801.77, "ticker": "I:SPX" }
},
"status": "OK"
}
Both responses describe the same December 2027 SPX call. The bare request returns an empty greeks object, no implied_volatility and an underlying_asset with no value; the I:SPX request returns all four greeks and an implied volatility of about 18 percent. An Options Starter key gets the same split.
The unified snapshot, /v3/snapshot, does not have this problem, because it takes contract tickers such as O:SPX271217C07800000 rather than an underlying.
Out-of-the-money contracts with no bid
Out-of-the-money contracts with a zero bid are the other group in the options snapshot that sometimes comes back without greeks, and there is no rule for which ones do. Some out-of-the-money contracts with a zero bid come back without greeks and others with them, so a zero bid on its own does not remove greeks.
Greeks after the close
On a real-time Options plan, greeks and implied volatility stay on the options snapshot after the market closes. Delta keeps moving with the after-hours stock price, while the option quotes stay at their last regular-session update.
No historical greeks or implied volatility
Historical greeks and implied volatility are not available from Massive: the options snapshot returns current values only. The three snapshot endpoints that carry greeks take no date parameter, and their documentation lists plan history as not applicable, as on the option chain snapshot page. None of the other options pages in the documentation, covering trades, quotes, aggregates, contracts, technical indicators, flat files and WebSocket channels, lists a greeks or implied volatility field. To build a history, request the snapshot on a schedule and store what it returns.
Why this happens
Greeks and implied volatility go missing in these cases because Massive calculates them from market data instead of receiving them. Implied volatility is solved from the contract's bid/ask midpoint, and the greeks come from the same pricing model, as described in how Massive calculates greeks and implied volatility. For an in-the-money stock or ETF option, which can be exercised at any time, a premium below intrinsic value violates the no-arbitrage bounds the model assumes, so the calculation fails. Index options are European, exercised only at expiration, and an index option below intrinsic value still gets greeks. The snapshot documentation notes that greeks are not returned in some cases, such as contracts that are deep in the money. Indices use the I: prefix in Massive's tickers, as in I:SPX, and with the bare root the snapshot still finds the contracts but returns no greeks for them.
If you see an error
"greeks": {} on every contract of an index option chain is what the bare root returns. Fix: request /v3/snapshot/options/I:SPX instead of /v3/snapshot/options/SPX, and the same for I:NDX, I:VIX, I:RUT and I:XSP.
"greeks": {} on some contracts of a chain, with greeks on the rest, means the calculation had no result for those contracts at that moment. Fix: none needed. To confirm, compare each empty stock or ETF option's midpoint with its intrinsic value, check that each empty index option is out of the money with a zero bid, and read it again after the quote moves.
A KeyError: 'delta' in Python, or undefined in JavaScript, when reading greeks.delta means the greeks object is empty. Fix: check that greeks is non-empty, or that implied_volatility is present, before reading either.
