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Amphastar Pharmaceuticals
AMPH
AMPH
243 hedge funds and large institutions have $873M invested in Amphastar Pharmaceuticals in 2025 Q3 according to their latest regulatory filings, with 34 funds opening new positions, 82 increasing their positions, 92 reducing their positions, and 34 closing their positions.
New
Increased
Maintained
Reduced
Closed
427% more call options, than puts
Call options by funds: $2.01M | Put options by funds: $381K
16% more capital invested
Capital invested by funds: $752M → $873M (+$121M)
1.03% more ownership
Funds ownership: 69.41% → 70.43% (+1%)
0% more first-time investments, than exits
New positions opened: 34 | Existing positions closed: 34
1% less funds holding
Funds holding: 245 → 243 (-2)
11% less repeat investments, than reductions
Existing positions increased: 82 | Existing positions reduced: 92
Holders
243
Holders Change
-2
Holders Change %
-0.82%
% of All Funds
3.19%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
34
Increased
82
Reduced
92
Closed
34
Calls
$2.01M
Puts
$381K
Net Calls
+$1.63M
Net Calls Change
+$1.56M
Top Buyers
Top Sellers
| 1 |
Pacer Advisors
Malvern,
Pennsylvania
|
-$8.27M |
| 2 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
-$6.95M |
| 3 |
Qube Research & Technologies (QRT)
London,
United Kingdom
|
-$5.89M |
| 4 |
CI
CX Institutional
Auburn,
Indiana
|
-$5.16M |
| 5 |
BlackRock
New York
|
-$4.74M |