OITracker Cboe delayed data

Contract OI history

Back to SO

Mar 19, 2027 EXPIRATION

SO $77.50 Put

SO270319P00077500

Latest saved OI204Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
SO $77.50 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2041020 2026-10-02: 84 OI2026-10-05: 184 OI2026-10-06: 184 OI2026-10-07: 184 OI2026-10-08: 184 OI2026-10-09: 184 OI2026-10-13: 184 OI2026-10-14: 184 OI2026-10-15: 184 OI2026-10-16: 204 OI2026-10-21: 204 OI2026-10-23: 204 OI Oct 02, 2026Oct 23, 2026

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

SO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing2040
Oct 21, 20262040
Oct 16, 2026204+20
Oct 15, 20261840
Oct 14, 20261840
Oct 13, 20261840
Oct 09, 20261840
Oct 08, 20261840
Oct 07, 20261840
Oct 06, 20261840
Oct 05, 2026184+100
Oct 02, 202684No prior observation