BIL Dark Pool Activity
Wednesday, September 9, 2026 · 3-session delayed summary
$230MOff-exchange premium
68Dark pool prints
2.5MShares off-exchange
~$28MLargest single print
State Street SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) traded $230M across 68 dark pool prints on Sep 9, about 42% above its recent average. Block-size prints made up roughly 43% of the session, concentrated between $91 and $91.
Key dark pool levels
$91
$91
Block activity
8Block-size prints
$97.9MCombined block premium
43%Share of off-exchange premium
~$28MLargest 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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