OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

WDAY $150.00 Put

WDAY261218P00150000

Latest saved OI575Oct 23, 2026
Last change+15vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDAY $150.00 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. 5752870 2026-10-09: 521 OI2026-10-12: 521 OI2026-10-14: 551 OI2026-10-15: 551 OI2026-10-16: 553 OI2026-10-21: 560 OI2026-10-23: 575 OI Oct 09, 2026Oct 23, 2026

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

WDAY contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing575+15
Oct 21, 2026560+7
Oct 16, 2026553+2
Oct 15, 20265510
Oct 14, 2026551+30
Oct 12, 20265210
Oct 09, 2026521No prior observation