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Contract OI history

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Nov 20, 2026 EXPIRATION

RGEN $175.00 Put

RGEN261120P00175000

Latest saved OI205Oct 23, 2026
Last change+187vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
RGEN $175.00 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. 2051020 2026-10-09: 10 OI2026-10-13: 10 OI2026-10-14: 10 OI2026-10-15: 10 OI2026-10-16: 10 OI2026-10-21: 18 OI2026-10-23: 205 OI Oct 09, 2026Oct 23, 2026

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

RGEN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026205+187
Oct 21, 2026Viewing18+8
Oct 16, 2026100
Oct 15, 2026100
Oct 14, 2026100
Oct 13, 2026100
Oct 09, 202610No prior observation