SNDK Institutional Summary
Wednesday, September 9, 2026 · 3-session delayed summary
$1.4BDark pool premium
$509MCall premium
+$9.5MNet gamma
500Sweeps
Off-exchange
Dark Pool
$1.4B across 661 prints. Block-size prints made up ~15% of the session.
View SNDK dark pool What is dark pool data?$1,770
$1,800
$1,760
Order flow
Options Flow
$646M premium, 79% calls. Buying concentrated at the $1,400 strike. 500 sweeps, 658 blocks.
View SNDK options flow What is options flow?Calls 79%Puts 21%
Dealer positioning
Gamma Exposure
Positive regime, net +$9.5M. Call wall $1,800 · put wall $1,500.
View SNDK gamma exposure What is GEX?This summary is three sessions old. Watch today live.
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