What does CUSIP 03209R103 represent in this 13F holders report?

CUSIP 03209R103 is the security identifier for AMPH - Amphastar Pharmaceuticals, Inc. - Common Stock used to aggregate holder disclosures.

How many institutions held AMPH - Amphastar Pharmaceuticals, Inc. - Common Stock in Q4 2021?

165 institutional investors reported AMPH - Amphastar Pharmaceuticals, Inc. - Common Stock for Q4 2021. Use the holders table for investor-level position and value details.

Amphastar Pharmaceuticals, Inc. - Common Stock (AMPH)

CUSIP: 03209R103

Q4 2021 13F Holders as of 31 Dec 2021

Type / Class: Equity / Common Stock
Shares outstanding: 46,377,939
Total 13F shares: 29,169,816
Share change: +834,259
Total reported value: $678,795,680
Price per share: $23.29
Number of holders: 165
Value change: +$19,582,653
Number of buys: 88
Number of sells: 55

Quarterly Holders Quick Answers

What is CUSIP 03209R103?
CUSIP 03209R103 identifies AMPH - Amphastar Pharmaceuticals, Inc. - Common Stock in SEC institutional holdings data.

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Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q1 2022
Previous quarter: Q3 2021

Recent filing periods for CUSIP 03209R103:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of AMPH - Amphastar Pharmaceuticals, Inc. - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
BlackRock Finance, Inc.	13F	Company	15%	7,177,581	$136,446,000	—	30 Sep 2021	13F
FEDERATED HERMES, INC.	13F	Company	7.5%	3,465,025	$65,871,000	—	30 Sep 2021	13F
VANGUARD GROUP INC	13F	Company	5.4%	2,522,624	$47,955,000	—	30 Sep 2021	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	3.8%	1,744,915	$33,171,000	—	30 Sep 2021	13F
STATE STREET CORP	13F	Company	3.1%	1,460,335	$27,761,000	—	30 Sep 2021	13F
JANUS HENDERSON GROUP PLC	13F	Company	2.1%	970,551	$18,450,000	—	30 Sep 2021	13F
Richard Koo	3/4/5	Director	— mixed-class rows	286,471 mixed-class rows	$15,350,254	—	07 Jun 2021	3/4/5
Invesco Ltd.	13F	Company	1.5%	714,319	$13,579,000	—	30 Sep 2021	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	1.5%	703,915	$13,381,000	—	30 Sep 2021	13F
GOLDMAN SACHS GROUP INC	13F	Company	1.2%	575,231	$10,935,000	—	30 Sep 2021	13F
MORGAN STANLEY	13F	Company	1.1%	517,409	$9,837,000	—	30 Sep 2021	13F
NORTHERN TRUST CORP	13F	Company	0.91%	423,385	$8,048,000	—	30 Sep 2021	13F
FULLER & THALER ASSET MANAGEMENT, INC.	13F	Company	0.86%	401,100	$7,625,000	—	30 Sep 2021	13F
SILVERCREST ASSET MANAGEMENT GROUP LLC	13F	Company	0.8%	368,951	$7,014,000	—	30 Sep 2021	13F
Bank of New York Mellon Corp	13F	Company	0.78%	364,000	$6,920,000	—	30 Sep 2021	13F
Nuveen Asset Management, LLC	13F	Company	0.81%	374,052	$6,871,000	—	30 Sep 2021	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.68%	315,629	$6,001,000	—	30 Sep 2021	13F
EAGLE ASSET MANAGEMENT INC	13F	Company	0.61%	284,618	$5,410,000	—	30 Sep 2021	13F
NORDEA INVESTMENT MANAGEMENT AB	13F	Company	0.6%	277,822	$5,381,000	—	30 Sep 2021	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.59%	275,700	$5,241,000	—	30 Sep 2021	13F
FRONTIER CAPITAL MANAGEMENT CO LLC	13F	Company	0.55%	255,813	$4,863,000	—	30 Sep 2021	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.55%	252,767	$4,805,000	—	30 Sep 2021	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.54%	252,168	$4,794,000	—	30 Sep 2021	13F
JACOBS LEVY EQUITY MANAGEMENT, INC	13F	Company	0.43%	201,128	$3,823,000	—	30 Sep 2021	13F
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	13F	Company	0.43%	198,472	$3,773,000	—	30 Sep 2021	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	0.42%	196,938	$3,744,000	—	30 Sep 2021	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.41%	188,436	$3,583,000	—	30 Sep 2021	13F
Assenagon Asset Management S.A.	13F	Company	0.38%	177,803	$3,380,000	—	30 Sep 2021	13F
JPMORGAN CHASE & CO	13F	Company	0.37%	173,690	$3,301,000	—	30 Sep 2021	13F
Russell Investments Group, Ltd.	13F	Company	0.36%	168,405	$3,199,000	—	30 Sep 2021	13F
PARAMETRIC PORTFOLIO ASSOCIATES LLC	13F	Company	0.33%	150,788	$2,866,000	—	30 Sep 2021	13F
PRUDENTIAL FINANCIAL INC	13F	Company	0.27%	126,652	$2,407,000	—	30 Sep 2021	13F
MARTINGALE ASSET MANAGEMENT L P	13F	Company	0.24%	109,987	$2,092,000	—	30 Sep 2021	13F
NORGES BANK	13F	Company	0.2%	92,200	$1,753,000	—	30 Sep 2021	13F
PUBLIC SECTOR PENSION INVESTMENT BOARD	13F	Company	0.2%	92,089	$1,751,000	—	30 Sep 2021	13F
ALLIANCEBERNSTEIN L.P.	13F	Company	0.19%	87,935	$1,672,000	—	30 Sep 2021	13F
Legal & General Group Plc	13F	Company	0.18%	85,269	$1,620,000	—	30 Sep 2021	13F
AMERICAN CENTURY COMPANIES INC	13F	Company	0.18%	84,221	$1,601,000	—	30 Sep 2021	13F
Swiss National Bank	13F	Company	0.18%	83,800	$1,593,000	—	30 Sep 2021	13F
SG Americas Securities, LLC	13F	Company	0.17%	79,603	$1,513,000	—	30 Sep 2021	13F
RHUMBLINE ADVISERS	13F	Company	0.17%	78,426	$1,491,000	—	30 Sep 2021	13F
BARCLAYS PLC	13F	Company	0.14%	63,814	$1,212,000	—	30 Sep 2021	13F
RENAISSANCE GROUP LLC	13F	Company	0.13%	60,819	$1,156,000	—	30 Sep 2021	13F
Summit Global Investments	13F	Company	0.13%	60,500	$1,150,000	—	30 Sep 2021	13F
WINTON GROUP Ltd	13F	Company	0.13%	58,326	$1,109,000	—	30 Sep 2021	13F
CORNERCAP INVESTMENT COUNSEL INC	13F	Company	0.12%	57,649	$1,096,000	—	30 Sep 2021	13F
David Maris	3/4/5	Director	— mixed-class rows	36,352 mixed-class rows	$1,092,746	—	07 Jun 2021	3/4/5
BANK OF AMERICA CORP /DE/	13F	Company	0.12%	56,736	$1,078,000	—	30 Sep 2021	13F
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	13F	Company	0.11%	50,866	$967,000	—	30 Sep 2021	13F
STATE OF WISCONSIN INVESTMENT BOARD	13F	Company	0.11%	50,600	$962,000	—	30 Sep 2021	13F

Institutional Holders of Amphastar Pharmaceuticals, Inc. - Common Stock (AMPH) as of Q4 2021

As of 31 Dec 2021, Amphastar Pharmaceuticals, Inc. - Common Stock (AMPH) was held by 165 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 29,169,816 shares. The largest 10 holders included BlackRock Inc., FEDERATED HERMES, INC., VANGUARD GROUP INC, DIMENSIONAL FUND ADVISORS LP, STATE STREET CORP, JANUS HENDERSON GROUP PLC, GEODE CAPITAL MANAGEMENT, LLC, Invesco Ltd., MORGAN STANLEY, and FULLER & THALER ASSET MANAGEMENT, INC.. This page lists 165 institutional shareholders reporting positions in this security for the Q4 2021 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q4 2021 vs Q3 2021 Across Filers

Q3 2021 holders

136

Q4 2021 holders

165

Holder diff

Investor	Q3 2021 Shares	Q4 2021 Shares	Share Diff	Share Chg %	Q3 2021 Value $	Q4 2021 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* 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.