OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

WDC $320.00 Put

WDC270115P00320000

Latest saved OI540Oct 23, 2026
Last change+18vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $320.00 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. 5402700 2026-10-09: 455 OI2026-10-12: 523 OI2026-10-14: 487 OI2026-10-15: 490 OI2026-10-16: 489 OI2026-10-21: 522 OI2026-10-23: 540 OI Oct 09, 2026Oct 23, 2026

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

WDC contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing540+18
Oct 21, 2026522+33
Oct 16, 2026489-1
Oct 15, 2026490+3
Oct 14, 2026487-36
Oct 12, 2026523+68
Oct 09, 2026455No prior observation