AMPH institutional holders

AMPHASTAR PHARMACEUTICALS IN · 13F, 2026Q2

Managers holding210
Shares held28,333,453
Reported value$572.4m
Quarter flows33 new, 64 added, 75 trimmed, 38 exited

Top 25 holders

ManagerSharesValue% of manager's 13F
BlackRock, Inc.5,224,934$105.4m0.0%
DIMENSIONAL FUND ADVISORS LP2,305,107$46.5m0.0%
STATE STREET CORP1,642,126$33.1m0.0%
VANGUARD CAPITAL MANAGEMENT LLC1,481,952$29.9m0.0%
AMERICAN CENTURY COMPANIES INC1,176,626$23.7m0.0%
MARSHALL WACE, LLP1,066,322$21.5m0.0%
GEODE CAPITAL MANAGEMENT, LLC969,840$19.6m0.0%
FULLER & THALER ASSET MANAGEMENT, INC.949,238$19.2m0.1%
D. E. Shaw & Co., Inc.887,048$17.9m0.0%
VANGUARD PORTFOLIO MANAGEMENT LLC809,568$16.3m0.0%
LSV ASSET MANAGEMENT642,014$13.0m0.0%
RENAISSANCE TECHNOLOGIES LLC525,100$10.6m0.0%
GOLDMAN SACHS GROUP INC505,360$10.2m0.0%
SYSTEMATIC FINANCIAL MANAGEMENT LP437,384$8.8m0.2%
MORGAN STANLEY434,840$8.8m0.0%
UBS Group AG393,110$7.9m0.0%
HRT FINANCIAL LP387,530$7.8m0.0%
DENALI ADVISORS LLC375,965$7.6m0.8%
NORTHERN TRUST CORP370,991$7.5m0.0%
Bridge City Capital, LLC338,708$6.8m1.6%
CHARLES SCHWAB INVESTMENT MANAGEMENT INC310,178$6.3m0.0%
BRIDGEWAY CAPITAL MANAGEMENT, LLC298,954$6.0m0.1%
ROYCE & ASSOCIATES LP294,758$5.9m0.0%
TWO SIGMA INVESTMENTS, LP248,115$5.0m0.0%
FIRST TRUST ADVISORS LP246,951$5.0m0.0%

Every holder, line by line, and the full history since 2013: yf.Client().holders("AMPH"). AMPH price history · All 13F data

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