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Amphastar Pharmaceuticals

129 hedge funds and large institutions have $522M invested in Amphastar Pharmaceuticals in 2020 Q4 according to their latest regulatory filings, with 9 funds opening new positions, 42 increasing their positions, 53 reducing their positions, and 16 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
129
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
Puts
Net Calls
Net Calls Change

Top Buyers

1 +$9.76M
2 +$4.84M
3 +$4.73M
4
Vanguard Group
Vanguard Group
Pennsylvania
+$1.37M
5
Prudential Financial
Prudential Financial
New Jersey
+$1.22M

Top Sellers

1 -$5.45M
2 -$3.54M
3 -$2.37M
4
Two Sigma Advisers
Two Sigma Advisers
New York
-$2.33M
5
AL
AJO LP
Pennsylvania
-$2.01M
Name Holding Trade Value Shares
Change
Change in
Stake
1
$144M
2
$64.9M
3
$49.8M
4
$36.3M
5
$28.1M
6
$25.8M
7
$11.5M
8
$11.1M
9
$11M
10
$9.84M
11
$7.77M
12
$6.69M
13
$6.68M
14
$6.29M
15
$6.28M
16
$5.81M
17
$5.24M
18
$5.06M
19
$4.87M
20
$4.52M
21
$3.78M
22
$3.75M
23
$3.62M
24
$3.61M
25
$2.7M