Intuitive Surgical I

ISRG Q1 2026 institutional ownership is a $124.1B book across 2,197 holders. Most reported positions are classified NEW or carry artifact flags, indicating the prior-quarter comparison dataset is structurally unavailable for this name. BlackRock is the largest holder at $13.9B (31.0M shares, NEW). Vanguard Capital Management $10.6B (23.1M shares, NEW); Vanguard Portfolio Management $3.3B (7.2M shares, NEW). State Street $7.3B (15.8M shares, NEW). Geode Capital $3.9B (8.5M shares, NEW). Capital World Investors $3.7B (8.0M shares, NEW). FMR LLC $2.5B (5.5M shares, NEW). JPMorgan $2.1B (4.6M shares, NEW). Morgan Stanley $2.8B (6.1M shares, INCREASED +7.6% -- valueChange flag suggests price-move artifact). AllianceBernstein $2.2B (3.8M shares, +1.4%, +$52M). Wellington Management $1.8B (4.0M shares, INCREASED despite negative valueChange). Fisher Asset $1.8B (3.9M shares, NEW). Invesco $1.7B (3.7M shares, -12.9%, -$615M with INCREASED flag -- artifact only). Bank of America $1.7B (3.6M shares, NEW). Bank of New York Mellon $1.6B (3.6M shares, NEW). Northern Trust $1.6B (3.5M shares, NEW). UBS AM $1.5B (3.3M shares, NEW). Goldman Sachs $1.2B (2.5M shares, INCREASED despite negative valueChange). Charles Schwab IM $1.2B (2.6M shares, NEW). Nuveen $1.2B (2.6M shares, NEW). Baillie Gifford $1.2B (2.6M shares, NEW). New positions: entire reported book. The 75.50 whaleScore reflects AUM. Smart-money read: neutral snapshot only. ISRG's $124.1B institutional book is one of the largest in the dataset for a single stock. BlackRock $13.9B and Vanguard $14.0B combined represent $27.9B or 22.5% of the total -- typical passive-core concentration for a large-cap medtech/robotics name. Without prior-quarter comparison, no directional signal is available. Read: neutral snapshot; signal requires prior-quarter baseline.