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Contract OI history

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Dec 18, 2026 EXPIRATION

GEN $28.00 Call

GEN261218C00028000

Latest saved OI643Oct 23, 2026
Last change+3vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
GEN $28.00 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 6433210 2026-10-09: 607 OI2026-10-13: 607 OI2026-10-14: 607 OI2026-10-15: 607 OI2026-10-16: 608 OI2026-10-21: 640 OI2026-10-23: 643 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, 2026Viewing643+3
Oct 21, 2026640+32
Oct 16, 2026608+1
Oct 15, 20266070
Oct 14, 20266070
Oct 13, 20266070
Oct 09, 2026607No prior observation