Last updated Aug 4, 2026
BlackRock, Inc. (BLK) is a publicly traded company. This page tracks every superinvestor 13F holding, congressional stock trade, and Form 4 insider transaction in BLK. Across our datasets, 4 superinvestors hold BLK and 19 members of Congress have traded it.
Notable holders include Tom Gayner, Mark Hillman, and Mairs & Power. Active congressional traders include Ro Khanna, Jefferson Shreve, and Greg Landsman.
Key takeaways