OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

GSK $50.00 Put

GSK261120P00050000

Latest saved OI1,474Oct 23, 2026
Last change+3vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
GSK $50.00 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. 1,4747370 2026-10-02: 1,424 OI2026-10-05: 1,423 OI2026-10-06: 1,416 OI2026-10-07: 1,421 OI2026-10-09: 1,423 OI2026-10-13: 1,424 OI2026-10-14: 1,424 OI2026-10-15: 1,441 OI2026-10-16: 1,441 OI2026-10-21: 1,471 OI2026-10-23: 1,474 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, 2026Viewing1,474+3
Oct 21, 20261,471+30
Oct 16, 20261,4410
Oct 15, 20261,441+17
Oct 14, 20261,4240
Oct 13, 20261,424+1
Oct 09, 20261,423+2
Oct 07, 20261,421+5
Oct 06, 20261,416-7
Oct 05, 20261,423-1
Oct 02, 20261,424No prior observation