Amphastar Pharmaceuticals
AMPH
AMPH
244 hedge funds and large institutions have $752M invested in Amphastar Pharmaceuticals in 2025 Q2 according to their latest regulatory filings, with 44 funds opening new positions, 91 increasing their positions, 73 reducing their positions, and 40 closing their positions.
New
Increased
Maintained
Reduced
Closed
more repeat investments, than reductions
Existing positions increased: | Existing positions reduced:
more call options, than puts
Call options by funds: $ | Put options by funds: $
more first-time investments, than exits
New positions opened: | Existing positions closed:
more funds holding
Funds holding: →
0.35% less ownership
Funds ownership: 69.75% → 69.41% (-0.35%)
22% less capital invested
Capital invested by funds: $964M → $752M (-$212M)
Holders
244
Holding in Top 10
–
Calls
$447K
Puts
$381K
Top Buyers
| 1 | +$7.26M | |
| 2 | +$6.71M | |
| 3 | +$6.57M | |
| 4 |
Vanguard Group
Malvern,
Pennsylvania
|
+$6.55M |
| 5 |
Qube Research & Technologies (QRT)
London,
United Kingdom
|
+$5.22M |
Top Sellers
| 1 | -$14.2M | |
| 2 | -$11.9M | |
| 3 | -$11.9M | |
| 4 |
GIP
Granite Investment Partners
El Segundo,
California
|
-$10.9M |
| 5 |
ECM
ExodusPoint Capital Management
New York
|
-$7.71M |