OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

SSYS $12.50 Put

SSYS270115P00012500

Latest saved OI135Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 07, 2026 onwards
Daily open interest Hover a point for its date and OI
SSYS $12.50 put open interest history 7 saved observations from 2026-10-07 to 2026-10-23. Exact values and changes are listed in the table below. 2521260 2026-10-07: 252 OI2026-10-09: 252 OI2026-10-13: 252 OI2026-10-14: 240 OI2026-10-16: 137 OI2026-10-20: 135 OI2026-10-23: 135 OI Oct 07, 2026Oct 23, 2026

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

SSYS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1350
Oct 20, 2026135-2
Oct 16, 2026137-103
Oct 14, 2026240-12
Oct 13, 20262520
Oct 09, 20262520
Oct 07, 2026252No prior observation