SPSM Dark Pool Activity
Wednesday, September 9, 2026 · 3-session delayed summary
$114MOff-exchange premium
13Dark pool prints
2MShares off-exchange
~$44MLargest single print
State Street SPDR Portfolio S&P 600 Small Cap ETF (SPSM) traded $114M across 13 dark pool prints on Sep 9, about 104% above its recent average. Block-size prints made up roughly 80% of the session, concentrated between $55 and $56.
Key dark pool levels
Block activity
3Block-size prints
$91MCombined block premium
80%Share of off-exchange premium
~$44MLargest block
| Time | Size | Price | Premium | Type |
|---|---|---|---|---|
| █:██ PM | ███,██0 | $█,███.██ | $██.█M | BLOCK |
| █:██ PM | ███,██0 | $█,███.██ | $██.█M | BLOCK |
Off-exchange premium: Sep 1 to Sep 9, 2026
How to read this: dark pools are private venues where institutions execute large trades away from public order books; the prints are reported through FINRA shortly after execution. Prices where unusual volume accumulates often act as support or resistance when revisited. Learn how Robinflow tracks dark pools
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