API Enterprise
Track short interest as it moves through the session, not once a day. This endpoint returns ORTEX's intraday short-interest series for one instrument, so you can see positioning build and unwind in near real time instead of waiting for the next daily estimate.
The series is a run of half-open [startAt, endAt) intervals in UTC. Each interval carries the short interest in effect from its start until its end; endAt is null for the interval that is still open. The series resets to the daily short-interest estimate each morning and moves intraday as soon as market data indicates a change in short interest.
from_date and to_date select calendar days (UTC, inclusive). Every interval that overlaps the window is returned whole, so the first interval may start before from_date and the last may end after to_date. Both bounds are required on this endpoint. The response is uncharged, and the instrument block carries the full identifier set.
Available Data Points:
- Start At: UTC timestamp at which the interval's short interest took effect.
- End At: UTC timestamp at which it was superseded, or null for the interval that is still open.
- SI Shares: Estimated number of shares sold short over the interval.
- SI Pct Free Float: Short interest as a percentage of the free float in effect on the interval's US trading date; null when no free float is available.
Coverage
Listings in the US, Canada, Hong Kong and Australia.
Try it out! You can test the API with the trial key TEST. Simply include it in your request headers; either here, or add the header "Ortex-Api-Key": "TEST" to your http request.
Trial key restrictions: Trial keys may be limited to a specific date range and set of regions. Requests outside the allowed regions or entirely outside the allowed date range are rejected; a date window that partially overlaps the allowed range is trimmed to it, reported in meta.restriction.
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