SPY · OCT 9Session closed

Same-day contracts accounted for 67% of tracked SPY option volume by 09:32 ET

As of Oct 9, 2026, 09:32 ET, published from Oct 9, 2026, 09:47 ET. Source: Schwab options chain.

89,841 of 134,671 tracked contracts on Oct 9, 2026, puts 41,972 and calls 47,869. Tracked: up to 40 strikes around the money across 33 expirations.

Evidence

Rule: same-day share >= 0.6 (absolute: baseline n 0 < 5); volume >= 10000
Values that cleared it: Share: 0.6671
Contracts traded behind each figure: Same day calls: 34; Same day puts: 34; Ticker: 743
Baseline: median same-day share of option volume: not set yet
Baseline window: last 20 sessions
Baseline n: 0, so the fixed threshold applied
Claim level: 1, arithmetic on reported figures

SPYCOCT 23Put/call by expiry
10:22 ET
SPY calls outnumbered puts 2.8 to 1 in contracts expiring Oct 23 (2 weeks out)
20,635 call and 7,246 put contracts by 10:22 ET on Oct 9, 2026. Est. premium $6.1M calls, $3.9M puts. Tracked: up to 40 strikes around the money across 33 expirations.
Source: Schwab options chainSPY page Details
SPYP776OCT 9Volume vs open interest
09:47 ET
SPY 776 puts expiring Oct 9 (same day) traded 7.6x their open interest
SPY puts expiring that date in the strikes we track traded 0.9x their open interest, by 09:47 ET on Oct 9, 2026. Tracked: up to 40 strikes around the money across 33 expirations.
Source: Schwab options chainSPY page Details