SPY Dark Pool Activity
Tuesday, September 8, 2026 · 3-session delayed summary
$4.9BOff-exchange premium
453Dark pool prints
6.4MShares off-exchange
~$1BLargest single print
State Street SPDR S&P 500 ETF Trust (SPY) traded $4.9B across 453 dark pool prints on Sep 8, about 224% above its recent average. Block-size prints made up roughly 83% of the session, concentrated between $766 and $768.
Key dark pool levels
Block activity
30Block-size prints
$4.1BCombined block premium
83%Share of off-exchange premium
~$1BLargest block
| Time | Size | Price | Premium | Type |
|---|---|---|---|---|
| █:██ PM | ███,██0 | $█,███.██ | $██.█M | BLOCK |
| █:██ PM | ███,██0 | $█,███.██ | $██.█M | BLOCK |
Off-exchange premium: Sep 1 to Sep 8, 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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