Massive's options trades after 16:00 Eastern are ordinary prints on the same trades endpoint, and whether a contract has any depends on its trading session. Most options on individual companies stop with the shares at 16:00, but a set of them, such as AAPL, NVDA and TSLA, trade on until 16:15 in a Curb session. On 4 September 2026 a SPY 770 call expiring on 11 September printed from 16:00:09 through 16:14:39 Eastern, and on 22 September 2026 an SPXW 7765 call printed as late as 16:59:45.
Applies to
- Plans: an Options subscription. The tier decides how recent the data can be.
- Endpoints: /v3/trades/{optionsTicker}, /v3/quotes/{optionsTicker}, /v2/aggs/... and the T and Q channels on the /options WebSocket cluster.
- Asset classes: US-listed options.
How to check a specific contract
Rather than working from a list that will age, ask the data when a contract last traded:
curl -X GET "https://api.massive.com/v3/trades/O:SPY260918C00650000?timestamp=2026-09-04&order=desc&limit=1&apiKey=YOUR_API_KEY"
Response
{
"results": [
{ "conditions": [232], "exchange": 312, "price": 120.7,
"sip_timestamp": 1788551972746000000, "size": 1 }
],
"status": "OK"
}
Convert the timestamp to Eastern and you have the answer for that contract on that day. The SPY contract above last printed at 15:59:32 Eastern, which is the ordinary close.
Which contracts trade late
The late sessions are exchange rules rather than a Massive feature, so the listing exchange's contract specification is the authority rather than this article. Broadly, options fall into these groups by closing time:
- Options on individual companies stop with the shares at 16:00 Eastern, except a set of them, such as AAPL, NVDA and TSLA, that trade on in a Curb session from 16:00 to 16:15. That session began on 19 October 2026. Each of its trades carries condition 248, Extended Hours Trade, and counts in the day's volume without setting the day's open, high, low or close.
- Other broad-based index options and ETF options, such as NDX, SPY, QQQ and IWM, trade until 16:15 Eastern.
- Cboe's own index options, such as SPX with its SPXW weeklies, XSP, VIX and RUT, trade until 16:15 in the regular session and then in a Curb session from 16:15 to 17:00 Eastern. The session times are on Cboe's trading hours page. On their last trading day, expiring SPXW and XSP options stop at 16:00, as the SPX and XSP specifications state.
Curb-session prints are on the trades endpoint like any other. This is the last trade of the day on an SPXW call:
curl -X GET "https://api.massive.com/v3/trades/O:SPXW260923C07765000?timestamp=2026-09-22&order=desc&limit=1&apiKey=YOUR_API_KEY"
Response
{
"results": [
{ "conditions": [209], "exchange": 302, "price": 13.4,
"sip_timestamp": 1790110785490000000, "size": 1 }
],
"status": "OK"
}
1790110785490000000 is 16:59:45.490 Eastern on 22 September 2026, in the Curb session, on the Chicago Board Options Exchange (exchange 302), for an SPXW 7765 call that expired the next day.
Two warnings about testing it yourself. Do not work from a published list of symbols, including one in a knowledge-base article, because the set changes and a stale list fails silently. And do not conclude from one contract: strikes far from the money often have no late prints even when the product trades late, so check a contract near the money, or several.
Why different options close at different times
Different closes exist because an index option settles against a value that is itself still moving at 16:00. The underlying index is calculated from stocks that print their closing auctions at and just after the bell, so letting the option trade on past the equity close gives the market time to price the settlement it will actually be measured against. A single-stock option's regular session has no such lag: it ends with the shares at 16:00.
The Curb session after 16:15 is a later addition. Cboe introduced it on 25 April 2022 for its own SPX and VIX options, as an all-electronic session from 16:15 to 17:00 Eastern, Monday to Friday (Cboe notice). The 16:00 to 16:15 Curb for single-stock options is newer still: Cboe Options and NYSE American Options added it on 19 October 2026, together with a 07:30 to 09:25 session before the open, for a set of classes the exchanges choose.
If you see an error
No trades after 16:00 for a contract is the normal answer for almost every option. It is not a gap.
A print between 16:00 and 16:15 Eastern on an index or broad ETF option is normal trading, and so is one on a single-stock option with condition 248. So is a print between 16:15 and 17:00 on an SPX, SPXW, XSP, VIX or RUT option. Each falls inside a session that is open for that product, so it is not a sign of bad data. The exception is an expiring SPXW or XSP option on its last trading day, which stops at 16:00. Check the contract's own specification before reporting any other late print.
An empty result for a whole day usually means the contract did not trade, which is common away from the money. Confirm with the chain snapshot, which reports open interest.
