ARISTA NETWORKS INC

ANET Q1 2026 institutional ownership is a $102.5B book across 1,945 holders. BlackRock is the largest holder at $11.3B (92.0M shares, -1.4%, -$1.22B from share DECREASED; passive rebalancing artifact). Vanguard Capital Management $8.4B (68.3M shares, NEW); Vanguard Portfolio Management $3.2B (25.8M shares, NEW). State Street $5.7B (46.8M shares, -0.9%, -$413M). FMR LLC $6.4B (52.3M shares, +33.5%, +$1.31B) -- the largest add, building from $390M to $6.4B in one quarter. Cresset Asset Management $2.5B (20.7M shares, +0.02%, -$171M from UNCHANGED with negative valueChange). Morgan Stanley $2.3B (18.5M shares, +1.6%). Capital Research Global $1.8B (14.8M shares, -1.3%, -$193M). JPMorgan $1.2B (10.5M shares, -2.6%, -$299M). Goldman Sachs $1.3B (10.3M shares, +37.6%, +$281M). Geode Capital $3.3B (27.2M shares, +0.4%, -$119M). Nuveen $1.5B (12.6M shares, +3.4%, -$50M). Northern Trust $1.3B (10.1M shares, +0.1%, -$85M). UBS AM $1.3B (10.6M shares, +5.8%, +$55M). MassFinancial $1.8B (7.2M shares, +41.0%, +$221M). Ameriprise $1.2B (10.0M shares, +1.9%, -$59M). BNY Mellon $1.1B (9.0M shares). Deustche Bank $1.1B (9.0M shares, -1.3%, -$118M). Arrowstreet Capital $1.0B (8.5M shares, -1.9%, -$193M). DZ Bank $1.0B (8.3M shares, +53.6%, +$550M). Point72 Asset Management $837M (6.8M shares, -3.5%, -$312M). Swedbank $792M (6.4M shares, -2.4%, -$173M). Invesco $859M (7.0M shares, -1.8%, -$139M). Legal & General $917M (7.5M shares). UBS Group $762M (6.2M shares, +17.6%, +$81M). Invesco $859M (7.0M shares, -1.8%). New positions: Vanguard two. Sellers: BlackRock -$1.22B, State Street -$413M, Point72 -$312M, JPMorgan -$299M, Arrowstreet -$193M, Capital Research -$193M, Swedbank -$173M, Cresset -$171M (UNCHANGED artifact), Invesco -$139M, Deutsche Bank -$118M, Legal & General -$130M. Buyers: FMR +$1.31B, DZ Bank +$550M, Goldman +$281M, MassFinancial +$221M, UBS AM +$55M, UBS Group +$81M. The 75.50 whaleScore reflects AUM. Smart-money read: net-bullish on data-center networking. FMR's $1.31B add is the defining signal -- building from a de minimis $390M position to $6.4B in one quarter is the most aggressive conviction signal in this dataset. This is consistent with AI/data-center infrastructure buildout driving optical/Ethernet switching demand. DZ Bank +$550M and Goldman +$281M confirm broad active-manager rotation into ANET. The sell cohort (BlackRock/State Street/State Farm) appears predominantly passive rebalancing against price appreciation. Net read: bullish on Arista Networks -- FMR's $1.31B build is the single most conviction-heavy data point in the entire stock batch, and the corroborating adds (DZ Bank, Goldman, MassFinancial) confirm the signal is not isolated.