OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

STX $440.00 Put

STX280121P00440000

Latest saved OI104Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
STX $440.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 104520 2026-10-09: 69 OI2026-10-13: 100 OI2026-10-14: 100 OI2026-10-15: 100 OI2026-10-16: 100 OI2026-10-21: 104 OI2026-10-23: 104 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

STX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1040
Oct 21, 2026104+4
Oct 16, 20261000
Oct 15, 20261000
Oct 14, 20261000
Oct 13, 2026100+31
Oct 09, 202669No prior observation