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Contract OI history

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Nov 20, 2026 EXPIRATION

PR $21.00 Put

PR261120P00021000

Latest saved OI271Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PR $21.00 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. 2711350 2026-10-02: 45 OI2026-10-05: 45 OI2026-10-06: 48 OI2026-10-07: 48 OI2026-10-08: 48 OI2026-10-09: 53 OI2026-10-13: 54 OI2026-10-14: 54 OI2026-10-15: 64 OI2026-10-16: 65 OI2026-10-21: 271 OI2026-10-23: 271 OI Oct 02, 2026Oct 23, 2026

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

PR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing2710
Oct 21, 2026271+206
Oct 16, 202665+1
Oct 15, 202664+10
Oct 14, 2026540
Oct 13, 202654+1
Oct 09, 202653+5
Oct 08, 2026480
Oct 07, 2026480
Oct 06, 202648+3
Oct 05, 2026450
Oct 02, 202645No prior observation