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Contract OI history

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Jan 15, 2027 EXPIRATION

GEN $18.00 Put

GEN270115P00018000

Latest saved OI58Oct 23, 2026
Last change0vs 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. 59290 2026-10-09: 59 OI2026-10-13: 59 OI2026-10-14: 59 OI2026-10-15: 59 OI2026-10-16: 59 OI2026-10-21: 58 OI2026-10-23: 58 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, 2026Viewing580
Oct 21, 202658-1
Oct 16, 2026590
Oct 15, 2026590
Oct 14, 2026590
Oct 13, 2026590
Oct 09, 202659No prior observation