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Contract OI history

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Mar 19, 2027 EXPIRATION

WDC $220.00 Put

WDC270319P00220000

Latest saved OI597Oct 23, 2026
Last change+10vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
WDC $220.00 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. 5972980 2026-10-09: 576 OI2026-10-12: 577 OI2026-10-14: 577 OI2026-10-15: 577 OI2026-10-16: 582 OI2026-10-21: 587 OI2026-10-23: 597 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, 2026Viewing597+10
Oct 21, 2026587+5
Oct 16, 2026582+5
Oct 15, 20265770
Oct 14, 20265770
Oct 12, 2026577+1
Oct 09, 2026576No prior observation