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Contract OI history

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Jan 21, 2028 EXPIRATION

GSK $35.00 Put

GSK280121P00035000

Latest saved OI174Oct 23, 2026
Last change-12vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
GSK $35.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 187930 2026-10-02: 179 OI2026-10-05: 180 OI2026-10-06: 180 OI2026-10-07: 180 OI2026-10-09: 184 OI2026-10-13: 186 OI2026-10-14: 186 OI2026-10-15: 187 OI2026-10-16: 186 OI2026-10-21: 186 OI2026-10-23: 174 OI Oct 02, 2026Oct 23, 2026

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

GSK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing174-12
Oct 21, 20261860
Oct 16, 2026186-1
Oct 15, 2026187+1
Oct 14, 20261860
Oct 13, 2026186+2
Oct 09, 2026184+4
Oct 07, 20261800
Oct 06, 20261800
Oct 05, 2026180+1
Oct 02, 2026179No prior observation