Off-exchange trading now accounts for 40-45% of U.S. equity volume - some 2026 quarters near 59%. Dark pools, iceberg orders, and blockhouses exist so institutions can move size without tipping their hand. The trades stay hidden, but the footprints don't. A breakdown of how to read them.

Institutional liquidity traps: hidden block trades | PsyllLearn how institutional liquidity traps work and how hidden block trades move through dark pools, iceberg orders, and off-exchange execution venues today.psyll.com