We are live on
!
Find out more
Amphastar Pharmaceuticals
AMPH
AMPH
215 hedge funds and large institutions have $634M invested in Amphastar Pharmaceuticals in 2026 Q1 according to their latest regulatory filings, with 30 funds opening new positions, 68 increasing their positions, 95 reducing their positions, and 44 closing their positions.
New
Increased
Maintained
Reduced
Closed
5,570% more call options, than puts
Call options by funds: $1.87M | Put options by funds: $33K
1.8% less ownership
Funds ownership: 73.1% → 71.3% (-1.8%)
9% less funds holding
Funds holding: 235 → 215 (-20)
28% less repeat investments, than reductions
Existing positions increased: 68 | Existing positions reduced: 95
30% less capital invested
Capital invested by funds: $900M → $634M (-$266M)
32% less first-time investments, than exits
New positions opened: 30 | Existing positions closed: 44
Holders
215
Holders Change
-20
Holders Change %
-8.51%
% of All Funds
2.65%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
30
Increased
68
Reduced
95
Closed
44
Calls
$1.87M
Puts
$33K
Net Calls
+$1.84M
Net Calls Change
+$1.32M
Top Buyers
| 1 |
LSV Asset Management
Chicago,
Illinois
|
+$13.2M |
| 2 |
American Century Companies
Kansas City,
Missouri
|
+$8.62M |
| 3 |
Dimensional Fund Advisors
Austin,
Texas
|
+$5.58M |
| 4 |
UBS Group
Zurich,
Switzerland
|
+$4M |
| 5 |
Franklin Resources
San Mateo,
California
|
+$2.77M |
