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Contract OI history

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Nov 20, 2026 EXPIRATION

PSA $270.00 Put

PSA261120P00270000

Latest saved OI244Oct 23, 2026
Last change-16vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PSA $270.00 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. 2601300 2026-10-02: 224 OI2026-10-05: 225 OI2026-10-06: 226 OI2026-10-07: 223 OI2026-10-08: 224 OI2026-10-09: 228 OI2026-10-13: 258 OI2026-10-14: 258 OI2026-10-15: 259 OI2026-10-16: 258 OI2026-10-21: 260 OI2026-10-23: 244 OI Oct 02, 2026Oct 23, 2026

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

PSA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing244-16
Oct 21, 2026260+2
Oct 16, 2026258-1
Oct 15, 2026259+1
Oct 14, 20262580
Oct 13, 2026258+30
Oct 09, 2026228+4
Oct 08, 2026224+1
Oct 07, 2026223-3
Oct 06, 2026226+1
Oct 05, 2026225+1
Oct 02, 2026224No prior observation