Home/Symbols/Dark Pool/MBB
Off-exchange data

MBB Dark Pool Activity

Oct 29, 2026 · 3-session delay

$107MOff-exchange premium
6Dark pool prints
1.2MShares off-exchange
~$46MLargest single print

iShares MBS ETF (MBB) traded $107M across 6 dark pool prints on Oct 29, about 62% below its recent average. Block-size prints made up roughly 94% of the session.

Key dark pool levels

$921.2M shares · $107M

Block activity

3Block-size prints
$100MCombined block premium
94%Share of off-exchange premium
~$46MLargest block
TimeSizePricePremiumType
█:██ PM███,██0$█,███.██$██.█MBLOCK
█:██ PM███,██0$█,███.██$██.█MBLOCK
The print-by-print tape · live in the app →

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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More MBB data

Dealer positioningMBB GEXGamma by strike with call and put wallsOrder flowMBB Options FlowPremium totals, sweeps, and top strikesOverviewMBB Symbol OverviewEverything Robinflow tracks on MBB

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