ALNY Dark Pool Activity
Oct 29, 2026 · 3-session delay
$339MOff-exchange premium
80Dark pool prints
1.8MShares off-exchange
~$24MLargest single print
Alnylam Pharmaceuticals (ALNY) traded $339M across 80 dark pool prints on Oct 29, about 911% above its recent average. Block-size prints made up roughly 61% of the session, concentrated between $176 and $191.
Key dark pool levels
Block activity
19Block-size prints
$205MCombined block premium
61%Share of off-exchange premium
~$24MLargest block
| Time | Size | Price | Premium | Type |
|---|---|---|---|---|
| █:██ PM | ███,██0 | $█,███.██ | $██.█M | BLOCK |
| █:██ PM | ███,██0 | $█,███.██ | $██.█M | BLOCK |
Off-exchange premium: Oct 23 to Oct 29, 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 (the guide to how dark pool trading works covers the background). Prices where unusual volume accumulates are the reference prices traders watch when the market revisits them. Learn how Robinflow tracks dark pools
What these terms mean: Dark pool print·Dark pool levels·Trade condition codes
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