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Contract OI history

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Dec 18, 2026 EXPIRATION

GEN $28.00 Put

GEN261218P00028000

Latest saved OI749Oct 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 $28.00 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. 7493740 2026-10-09: 749 OI2026-10-13: 749 OI2026-10-14: 749 OI2026-10-15: 749 OI2026-10-16: 749 OI2026-10-21: 749 OI2026-10-23: 749 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, 2026Viewing7490
Oct 21, 20267490
Oct 16, 20267490
Oct 15, 20267490
Oct 14, 20267490
Oct 13, 20267490
Oct 09, 2026749No prior observation