XLI Dark Pool Activity
Wednesday, September 9, 2026 · 3-session delayed summary
$120MOff-exchange premium
16Dark pool prints
698KShares off-exchange
~$66MLargest single print
State Street Industrial Select Sector SPDR ETF (XLI) traded $120M across 16 dark pool prints on Sep 9. Block-size prints made up roughly 81% of the session, concentrated between $172 and $173.
Key dark pool levels
Block activity
4Block-size prints
$97.6MCombined block premium
81%Share of off-exchange premium
~$66MLargest block
| Time | Size | Price | Premium | Type |
|---|---|---|---|---|
| █:██ PM | ███,██0 | $█,███.██ | $██.█M | BLOCK |
| █:██ PM | ███,██0 | $█,███.██ | $██.█M | BLOCK |
Off-exchange premium: Sep 2 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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