
Extended Hours Are Coming to OPRA Options Data
Starting August 17, 2026, Cboe's Options Exchange is extending trading hours for select single-stock equity options with a morning GTH session (7:30–9:25 am ET) and Curb session (4:00–4:15 pm ET).

cole

Introducing
Jul 19, 2018
We have introduced 2 new APIs to be used to determine the market status.
Example:
{ "market": "open", "serverTime": "2018-07-19T08:51:07-04:00", "exchanges": { "nyse": "open", "nasdaq": "open", "otc": "extended-hours" } }
Example:
[ { "exchange": "NYSE", "name": "Thanksgiving Day", "status": "early-close", "date": "2018-11-23T00:00:00.000Z", "open": "2018-11-23T09:30:00.000Z", "close": "2018-11-23T13:00:00.000Z" } ]
See more on the Docs page: https://massive.com/docs/stocks/get_v1_marketstatus_now

Quinton Pike
quintonpike
See what's happening at Massive

Starting August 17, 2026, Cboe's Options Exchange is extending trading hours for select single-stock equity options with a morning GTH session (7:30–9:25 am ET) and Curb session (4:00–4:15 pm ET).

cole

A SEC 8-K API that labels what actually happened. Query filings by event type (CEO departures, cybersecurity incidents, M&A), with source-cited tags.

rian

In this post, we'll walk through how Earnings Watcher built its analytics layer on Massive's options chains and snapshots, why Fair Market Value anchors its scanner, and how the same API pattern extended from options into post-earnings drift analysis on the underlying equity.

alexnovotny