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Contract OI history

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Jan 21, 2028 EXPIRATION

SO $80.00 Put

SO280121P00080000

Latest saved OI258Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
SO $80.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2581290 2026-10-02: 41 OI2026-10-05: 41 OI2026-10-06: 58 OI2026-10-07: 58 OI2026-10-08: 58 OI2026-10-09: 58 OI2026-10-13: 58 OI2026-10-14: 58 OI2026-10-15: 151 OI2026-10-16: 257 OI2026-10-21: 257 OI2026-10-23: 258 OI Oct 02, 2026Oct 23, 2026

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

SO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing258+1
Oct 21, 20262570
Oct 16, 2026257+106
Oct 15, 2026151+93
Oct 14, 2026580
Oct 13, 2026580
Oct 09, 2026580
Oct 08, 2026580
Oct 07, 2026580
Oct 06, 202658+17
Oct 05, 2026410
Oct 02, 202641No prior observation