OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

SW $40.00 Put

SW270115P00040000

Latest saved OI143Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
SW $40.00 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. 158790 2026-10-02: 158 OI2026-10-05: 136 OI2026-10-06: 136 OI2026-10-07: 136 OI2026-10-08: 146 OI2026-10-09: 147 OI2026-10-13: 148 OI2026-10-14: 148 OI2026-10-15: 153 OI2026-10-16: 143 OI2026-10-21: 143 OI2026-10-23: 143 OI Oct 02, 2026Oct 23, 2026

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

SW contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20261430
Oct 21, 2026Viewing1430
Oct 16, 2026143-10
Oct 15, 2026153+5
Oct 14, 20261480
Oct 13, 2026148+1
Oct 09, 2026147+1
Oct 08, 2026146+10
Oct 07, 20261360
Oct 06, 20261360
Oct 05, 2026136-22
Oct 02, 2026158No prior observation