OITracker Cboe delayed data

Contract OI history

Back to PSIX

Nov 20, 2026 EXPIRATION

PSIX $55.00 Put

PSIX261120P00055000

Latest saved OI32Oct 23, 2026
Last change0vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
PSIX $55.00 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 34170 2026-10-09: 34 OI2026-10-13: 34 OI2026-10-14: 34 OI2026-10-16: 32 OI2026-10-21: 32 OI2026-10-23: 32 OI Oct 09, 2026Oct 23, 2026

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

PSIX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026320
Oct 21, 2026Viewing320
Oct 16, 202632-2
Oct 14, 2026340
Oct 13, 2026340
Oct 09, 202634No prior observation