IGSB Dark Pool Activity
Wednesday, September 9, 2026 · 3-session delayed summary
$68.2MOff-exchange premium
6Dark pool prints
1.3MShares off-exchange
~$26MLargest single print
iShares Trust iShares 1-5 Year Investment Grade Corporate Bond ETF (IGSB) traded $68.2M across 6 dark pool prints on Sep 9, about 26% above its recent average. Block-size prints made up roughly 90% of the session, concentrated between $52 and $52.
Key dark pool levels
Block activity
3Block-size prints
$61.7MCombined block premium
90%Share of off-exchange premium
~$26MLargest 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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