OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

STX $520.00 Put

STX280121P00520000

Latest saved OI43Oct 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 $520.00 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. 44220 2026-10-09: 44 OI2026-10-13: 34 OI2026-10-14: 34 OI2026-10-15: 34 OI2026-10-16: 34 OI2026-10-21: 43 OI2026-10-23: 43 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, 2026Viewing430
Oct 21, 202643+9
Oct 16, 2026340
Oct 15, 2026340
Oct 14, 2026340
Oct 13, 202634-10
Oct 09, 202644No prior observation