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Contract OI history

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Dec 18, 2026 EXPIRATION

PPTA $17.50 Put

PPTA261218P00017500

Latest saved OI284Oct 23, 2026
Last change+32vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
PPTA $17.50 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. 2841420 2026-10-09: 135 OI2026-10-13: 135 OI2026-10-14: 235 OI2026-10-16: 235 OI2026-10-20: 252 OI2026-10-23: 284 OI Oct 09, 2026Oct 23, 2026

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

PPTA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing284+32
Oct 20, 2026252+17
Oct 16, 20262350
Oct 14, 2026235+100
Oct 13, 20261350
Oct 09, 2026135No prior observation