OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

W $50.00 Put

W280121P00050000

Latest saved OI100Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
W $50.00 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. 100500 2026-10-02: 93 OI2026-10-05: 93 OI2026-10-06: 93 OI2026-10-07: 93 OI2026-10-08: 93 OI2026-10-09: 93 OI2026-10-13: 98 OI2026-10-14: 98 OI2026-10-15: 98 OI2026-10-16: 99 OI2026-10-21: 100 OI2026-10-23: 100 OI Oct 02, 2026Oct 23, 2026

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

W contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1000
Oct 21, 2026100+1
Oct 16, 202699+1
Oct 15, 2026980
Oct 14, 2026980
Oct 13, 202698+5
Oct 09, 2026930
Oct 08, 2026930
Oct 07, 2026930
Oct 06, 2026930
Oct 05, 2026930
Oct 02, 202693No prior observation