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Contract OI history

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Mar 19, 2027 EXPIRATION

GFS $40.00 Put

GFS270319P00040000

Latest saved OI264Oct 23, 2026
Last change-32vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
GFS $40.00 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. 2961480 2026-10-09: 244 OI2026-10-13: 252 OI2026-10-14: 252 OI2026-10-15: 259 OI2026-10-16: 293 OI2026-10-21: 296 OI2026-10-23: 264 OI Oct 09, 2026Oct 23, 2026

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

GFS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026264-32
Oct 21, 2026Viewing296+3
Oct 16, 2026293+34
Oct 15, 2026259+7
Oct 14, 20262520
Oct 13, 2026252+8
Oct 09, 2026244No prior observation