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Contract OI history

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Dec 18, 2026 EXPIRATION

SPT $17.50 Call

SPT261218C00017500

Latest saved OI298Oct 23, 2026
Last change+45vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SPT $17.50 call open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 2981490 2026-10-09: 253 OI2026-10-13: 253 OI2026-10-15: 253 OI2026-10-16: 253 OI2026-10-20: 253 OI2026-10-23: 298 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, 2026Viewing298+45
Oct 20, 20262530
Oct 16, 20262530
Oct 15, 20262530
Oct 13, 20262530
Oct 09, 2026253No prior observation