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Contract OI history

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Nov 20, 2026 EXPIRATION

GEN $18.00 Put

GEN261120P00018000

Latest saved OI42Oct 23, 2026
Last change+1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
GEN $18.00 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. 43210 2026-10-09: 41 OI2026-10-13: 43 OI2026-10-14: 42 OI2026-10-15: 42 OI2026-10-16: 42 OI2026-10-21: 41 OI2026-10-23: 42 OI Oct 09, 2026Oct 23, 2026

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

GEN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing42+1
Oct 21, 202641-1
Oct 16, 2026420
Oct 15, 2026420
Oct 14, 202642-1
Oct 13, 202643+2
Oct 09, 202641No prior observation