Q3 2025 13F Holders as of 30 Sep 2025
-
Type / Class
-
Equity / Common Stock
-
Shares outstanding
-
46.4M
-
Number of holders
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238
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Total 13F shares, excl. options
-
32.7M
-
Shares change
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-136K
-
Total reported value, excl. options
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$873M
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Value change
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-$559
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Put/Call ratio
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0.17
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Number of buys
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112
-
Number of sells
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-126
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Price
-
$26.65
Significant Holders of Amphastar Pharmaceuticals, Inc. - Common Stock (AMPH) as of Q3 2025
276 filings reported holding AMPH - Amphastar Pharmaceuticals, Inc. - Common Stock as of Q3 2025.
Amphastar Pharmaceuticals, Inc. - Common Stock (AMPH) has 238 institutional shareholders that have filed 13F forms with the Securities Exchange Commission (SEC).
These institutions hold a total of 32.7M shares
of 46.4M outstanding shares and own 70.61% of the company stock.
Largest 10 shareholders include BlackRock, Inc. (5.49M shares), VANGUARD GROUP INC (2.63M shares), TD Asset Management Inc (1.93M shares), DIMENSIONAL FUND ADVISORS LP (1.76M shares), STATE STREET CORP (1.5M shares), FULLER & THALER ASSET MANAGEMENT, INC. (1.35M shares), Boston Trust Walden Corp (1.17M shares), Epoch Investment Partners, Inc. (1.13M shares), GEODE CAPITAL MANAGEMENT, LLC (923K shares), and MARSHALL WACE, LLP (874K shares).
This table shows the top 238 institutional shareholders of the company equity. This data is sourced directly from the SEC via 13F filings.
| Investor |
Option |
Weight % |
Change % |
Value $ |
* Price $ |
Shares |
Share Change |
Activity |
Report Period |
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.