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Which hedge funds own AMPH? AMPHASTAR PHARMACEUTICALS IN, Q2 2026 13F holders

HealthcareDrug Manufacturers - Specialty & Generic

22 tracked hedge funds disclosed a position in AMPH (AMPHASTAR PHARMACEUTICALS IN) in their Q2 2026 13F filings, worth $69.8m in total. The largest holder by portfolio weight is Corient IA LP at 0.1% of its book. 8 opened a new position this quarter: Fox Run Management, L.L.C., Campbell & CO Investment Adviser LLC, Y-Intercept (Hong Kong) Ltd, Engineers Gate Manager LP. 5 exited: Quantedge Capital Pte Ltd, PDT Partners, LLC, Trexquant Investment LP.

22
Holders
Tracked managers whose filing for the quarter reports a long equity position in the security.
8
New this quarter
Holders whose previous filing (at most two quarters earlier) did not report the security.
5
Exited this quarter
Tracked managers whose previous filing reported the security and whose filing for the quarter does not.
$3.5m
Inflow, new holders
Combined value of the positions the new holders reported for the quarter.
$2.4m
Outflow, exits
Combined value the exiting managers reported for the security in their previous filing.
$69.8m
Combined value
Sum of the holders' reported positions in the security.
1.8%
Share of managers holding
Holders as a share of tracked managers filing for that quarter. Comparable across the 2024 coverage expansion, where the raw holder count is not.

Holders, Q2 2026

22 rows
Corient IA LP Hedge fund0.1%$135k6,6700.0%held
Fox Run Management, L.L.C. Hedge fund0.05%$294k14,556–new
Campbell & CO Investment Adviser LLC Hedge fund0.02%$468k23,211–new
Marshall Wace, LLP Hedge fund0.02%$21.5m1.07m+4.0%added
Renaissance Technologies LLC Hedge fund0.01%$10.6m525,100−5.2%reduced
Y-Intercept (Hong Kong) Ltd Hedge fund0.01%$700k34,704–new
D. E. Shaw & Co., Inc. Hedge fund0.01%$17.9m887,048+33%added
Brevan Howard Capital Management LP Hedge fund0.01%$690k34,201+194%added
Engineers Gate Manager LP Hedge fund0.01%$609k30,191–new
Voloridge Investment Management, LLC Hedge fund0.0%$1.0m50,912−70%reduced
Two Sigma Investments, LP Hedge fund0.0%$5.0m248,115+80%added
Fulcrum Asset Management LLP Hedge fund0.0%$36.2k1,750–new
Jain Global LLC Hedge fund0.0%$286k14,183–new
Squarepoint Ops LLC Hedge fund0.0%$1.6m78,795+178%added
Magnetar Financial LLC Hedge fund0.0%$220k10,906−2.9%reduced
Point72 Asset Management, L.P. Hedge fund0.0%$1.1m54,964–new
Quantbot Technologies LP Hedge fund0.0%$38.8k1,924–new
AQR Capital Management LLC Hedge fund0.0%$4.2m208,651+165%added
Arrowstreet Capital, Limited Partnership Hedge fund0.0%$2.4m116,653−64%reduced
Millennium Management LLC Hedge fund0.0%$642k31,814−91%reduced
Citadel Advisors LLC Hedge fund0.0%$328k16,231−75%reduced
Elequin Capital, LP Hedge fund0.0%$22211+57%added