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Contract OI history

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Dec 18, 2026 EXPIRATION

SPT $12.50 Put

SPT261218P00012500

Latest saved OI84Oct 23, 2026
Last change+48vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SPT $12.50 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. 84420 2026-10-09: 30 OI2026-10-13: 30 OI2026-10-15: 30 OI2026-10-16: 36 OI2026-10-20: 36 OI2026-10-23: 84 OI Oct 09, 2026Oct 23, 2026

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

SPT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing84+48
Oct 20, 2026360
Oct 16, 202636+6
Oct 15, 2026300
Oct 13, 2026300
Oct 09, 202630No prior observation