OITracker Cboe delayed data

Contract OI history

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Mar 19, 2027 EXPIRATION

WM $200.00 Put

WM270319P00200000

Latest saved OI204Oct 23, 2026
Last change+4vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WM $200.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2041020 2026-10-02: 176 OI2026-10-05: 190 OI2026-10-06: 191 OI2026-10-07: 191 OI2026-10-08: 191 OI2026-10-09: 193 OI2026-10-14: 195 OI2026-10-15: 193 OI2026-10-16: 202 OI2026-10-21: 200 OI2026-10-23: 204 OI Oct 02, 2026Oct 23, 2026

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

WM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026204+4
Oct 21, 2026Viewing200-2
Oct 16, 2026202+9
Oct 15, 2026193-2
Oct 14, 2026195+2
Oct 09, 2026193+2
Oct 08, 20261910
Oct 07, 20261910
Oct 06, 2026191+1
Oct 05, 2026190+14
Oct 02, 2026176No prior observation