Fund shareholders of Amphastar Pharmaceuticals Inc
ISIN US03209R1032 · United States · LEI 54930055TH0ZLSAQMJ38
- Fund shareholders
- 243
- Of which ETFs
- 71 172 other funds
- Value held
- 294M $
- Share of capital
- 34.7 % of 42.5M shares on Jul 31, 2026
| Fund | Shares | Value | Weight in fund | Share of capital | |
|---|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF iShares Trust | 2,045,920 | 41.3M $ | 0.04 % | 4.81 % | as of Jun 30, 2026 ↗ |
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 1,055,676 | 21.3M $ | 0.00 % | 2.48 % | as of Jun 30, 2026 ↗ |
| Avantis U.S. Small Cap Value ETF American Century ETF Trust | 945,543 | 17.8M $ | 0.07 % | 2.22 % | as of May 31, 2026 ↗ |
| FULLERTHALER BEHAVIORAL SMALL CAP EQUITY Capitol Series Trust | 902,737 | 18.2M $ | 0.14 % | 2.12 % | as of Jun 30, 2026 ↗ |
| iShares Russell 2000 ETF iShares Trust | 847,727 | 17.1M $ | 0.02 % | 1.99 % | as of Jun 30, 2026 ↗ |
| U.S. SMALL CAP VALUE PORTFOLIO DFA INVESTMENT DIMENSIONS GROUP INC | 596,077 | 11.9M $ | 0.06 % | 1.40 % | as of Jul 31, 2026 ↗ |
| VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS | 391,083 | 7.9M $ | 0.01 % | 0.92 % | as of Jun 30, 2026 ↗ |
| Fidelity Small Cap Index Fund Fidelity Salem Street Trust | 353,885 | 7.1M $ | 0.02 % | 0.83 % | as of Jul 31, 2026 ↗ |
| State Street(R) SPDR(R) Portfolio S&P 600(TM) Small Cap ETF SPDR SERIES TRUST | 306,646 | 6.2M $ | 0.04 % | 0.72 % | as of Jun 30, 2026 ↗ |
| iShares Russell 2000 Value ETF iShares Trust | 303,954 | 6.1M $ | 0.04 % | 0.71 % | as of Jun 30, 2026 ↗ |
| Dimensional U.S. Targeted Value ETF Dimensional ETF Trust | 285,363 | 5.7M $ | 0.04 % | 0.67 % | as of Jul 31, 2026 ↗ |
| U.S. Targeted Value Portfolio DFA INVESTMENT DIMENSIONS GROUP INC | 276,227 | 5.5M $ | 0.03 % | 0.65 % | as of Jul 31, 2026 ↗ |
| VANGUARD TAX-MANAGED SMALL-CAP FUND VANGUARD TAX-MANAGED FUNDS | 269,433 | 5.4M $ | 0.05 % | 0.63 % | as of Jun 30, 2026 ↗ |
| State Street(R) SPDR(R) S&P(R) Pharmaceuticals ETF SPDR SERIES TRUST | 265,621 | 5.4M $ | 1.25 % | 0.62 % | as of Jun 30, 2026 ↗ |
| Dimensional US Small Cap Value ETF Dimensional ETF Trust | 256,428 | 5.1M $ | 0.06 % | 0.60 % | as of Jul 31, 2026 ↗ |
| Pacer US Small Cap Cash Cows 100 ETF Pacer Funds Trust | 232,400 | 4.6M $ | 0.13 % | 0.55 % | as of Jul 31, 2026 ↗ |
| First Trust Small Cap Core AlphaDEX Fund First Trust Exchange-Traded AlphaDEX Fund | 216,138 | 4.3M $ | 0.31 % | 0.51 % | as of Jul 31, 2026 ↗ |
| U.S. SMALL CAP PORTFOLIO DFA INVESTMENT DIMENSIONS GROUP INC | 210,331 | 4.2M $ | 0.02 % | 0.49 % | as of Jul 31, 2026 ↗ |
| U.S. MICRO CAP PORTFOLIO DFA INVESTMENT DIMENSIONS GROUP INC | 192,358 | 3.8M $ | 0.05 % | 0.45 % | as of Jul 31, 2026 ↗ |
| VANGUARD RUSSELL 2000 INDEX FUND VANGUARD SCOTTSDALE FUNDS | 184,496 | 3.5M $ | 0.02 % | 0.43 % | as of May 31, 2026 ↗ |
| Fidelity Extended Market Index Fund Fidelity Concord Street Trust | 184,436 | 3.5M $ | 0.01 % | 0.43 % | as of May 31, 2026 ↗ |
| Applied Finance Explorer Fund World Funds Trust | 180,913 | 3.6M $ | 0.34 % | 0.43 % | as of Jul 31, 2026 ↗ |
| Schwab U.S. Small-Cap ETF SCHWAB STRATEGIC TRUST | 171,014 | 3.2M $ | 0.01 % | 0.40 % | as of May 31, 2026 ↗ |
| iShares S&P Small-Cap 600 Growth ETF iShares Trust | 159,352 | 3.2M $ | 0.04 % | 0.37 % | as of Jun 30, 2026 ↗ |
| iShares S&P Small-Cap 600 Value ETF iShares Trust | 141,236 | 2.9M $ | 0.04 % | 0.33 % | as of Jun 30, 2026 ↗ |
| VANGUARD S&P SMALL-CAP 600 INDEX FUND VANGUARD ADMIRAL FUNDS | 121,909 | 2.3M $ | 0.04 % | 0.29 % | as of May 31, 2026 ↗ |
| Old Westbury Small & Mid Cap Strategies Fund Old Westbury Funds Inc | 120,747 | 2.4M $ | 0.03 % | 0.28 % | as of Jul 31, 2026 ↗ |
| VANGUARD HEALTH CARE INDEX FUND VANGUARD WORLD FUND | 110,795 | 2.1M $ | 0.01 % | 0.26 % | as of May 31, 2026 ↗ |
| State Street(R) SPDR(R) S & P 600(TM) Small Cap Growth ETF SPDR SERIES TRUST | 98,150 | 2M $ | 0.04 % | 0.23 % | as of Jun 30, 2026 ↗ |
| Dimensional U.S. Small Cap ETF Dimensional ETF Trust | 97,971 | 2M $ | 0.01 % | 0.23 % | as of Jul 31, 2026 ↗ |
| Omni Small-Cap Value Fund Bridgeway Funds, Inc. | 89,142 | 1.8M $ | 0.14 % | 0.21 % | as of Jun 30, 2026 ↗ |
| iShares U.S. Pharmaceuticals ETF iShares Trust | 88,493 | 1.8M $ | 0.16 % | 0.21 % | as of Jun 30, 2026 ↗ |
| Royce Capital Fund - Small-Cap Portfolio ROYCE CAPITAL FUND | 84,036 | 1.7M $ | 0.91 % | 0.20 % | as of Jun 30, 2026 ↗ |
| VictoryShares Small Cap Free Cash Flow ETF Victory Portfolios II | 81,076 | 1.6M $ | 0.27 % | 0.19 % | as of Jun 30, 2026 ↗ |
| State Street(R) SPDR(R) S & P 600(TM) Small Cap Value ETF SPDR SERIES TRUST | 80,228 | 1.6M $ | 0.03 % | 0.19 % | as of Jun 30, 2026 ↗ |
| Royce Small-Cap Fund ROYCE FUND | 79,030 | 1.6M $ | 0.07 % | 0.19 % | as of Jun 30, 2026 ↗ |
| Schwab Small-Cap Index Fund SCHWAB CAPITAL TRUST | 78,622 | 1.6M $ | 0.02 % | 0.18 % | as of Jul 31, 2026 ↗ |
| Fidelity Small-Mid Multifactor ETF Fidelity Covington Trust | 77,589 | 1.5M $ | 0.06 % | 0.18 % | as of Jul 31, 2026 ↗ |
| ETC 6 Meridian Small Cap Equity ETF EXCHANGE TRADED CONCEPTS TRUST | 72,083 | 1.4M $ | 1.07 % | 0.17 % | as of May 31, 2026 ↗ |
| Fidelity Total Market Index Fund Fidelity Concord Street Trust | 68,075 | 1.3M $ | 0.00 % | 0.16 % | as of May 31, 2026 ↗ |
| LSV Small Cap Value Fund ADVISORS' INNER CIRCLE FUND | 62,154 | 1.2M $ | 0.18 % | 0.15 % | as of Jul 31, 2026 ↗ |
| Avantis U.S. Small Cap Value Fund American Century ETF Trust | 61,528 | 1.2M $ | 0.07 % | 0.14 % | as of May 31, 2026 ↗ |
| Victory Small Cap Stock Fund Victory Portfolios III | 60,972 | 1.2M $ | 0.13 % | 0.14 % | as of Jul 31, 2026 ↗ |
| Master Small Cap Index Series Quantitative Master Series LLC | 59,235 | 1.2M $ | 0.02 % | 0.14 % | as of Jun 30, 2026 ↗ |
| First Trust Small Cap Value AlphaDEX Fund First Trust Exchange-Traded AlphaDEX Fund | 59,218 | 1.2M $ | 0.61 % | 0.14 % | as of Jul 31, 2026 ↗ |
| Dimensional U.S. Core Equity 2 ETF Dimensional ETF Trust | 57,513 | 1.1M $ | 0.00 % | 0.14 % | as of Jul 31, 2026 ↗ |
| Invesco RAFI US 1500 Small-Mid ETF Invesco Exchange-Traded Fund Trust | 56,490 | 1.1M $ | 0.04 % | 0.13 % | as of Jul 31, 2026 ↗ |
| Fidelity Series Total Market Index Fund Fidelity Concord Street Trust | 53,909 | 1M $ | 0.00 % | 0.13 % | as of May 31, 2026 ↗ |
| JNL Small Cap Index Fund JNL Series Trust | 52,979 | 1.1M $ | 0.04 % | 0.12 % | as of Jun 30, 2026 ↗ |
| Columbia Small Cap Index Fund COLUMBIA FUNDS SERIES TRUST | 52,819 | 995.6K $ | 0.04 % | 0.12 % | as of May 31, 2026 ↗ |
| VANGUARD U.S. VALUE FACTOR ETF VANGUARD WELLINGTON FUND | 52,369 | 987.2K $ | 0.12 % | 0.12 % | as of May 31, 2026 ↗ |
| Royce Small-Cap Value Fund ROYCE FUND | 50,299 | 1M $ | 0.91 % | 0.12 % | as of Jun 30, 2026 ↗ |
| Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF Goldman Sachs ETF Trust | 49,047 | 924.5K $ | 0.09 % | 0.12 % | as of May 31, 2026 ↗ |
| iShares Core S&P Total U.S. Stock Market ETF iShares Trust | 48,386 | 976.4K $ | 0.00 % | 0.11 % | as of Jun 30, 2026 ↗ |
| Small-Cap Value Fund Bridgeway Funds, Inc. | 47,000 | 948.5K $ | 0.28 % | 0.11 % | as of Jun 30, 2026 ↗ |
| Avantis U.S. Small Cap Equity ETF American Century ETF Trust | 45,713 | 861.7K $ | 0.03 % | 0.11 % | as of May 31, 2026 ↗ |
| WisdomTree U.S. SmallCap Fund WisdomTree Trust | 45,688 | 922K $ | 0.13 % | 0.11 % | as of Jun 30, 2026 ↗ |
| Fidelity Small Cap Value Index Fund Fidelity Salem Street Trust | 45,225 | 912.6K $ | 0.04 % | 0.11 % | as of Jun 30, 2026 ↗ |
| Nuveen Small Cap Blend Index Fund TIAA-CREF Funds | 43,494 | 867.3K $ | 0.02 % | 0.10 % | as of Jul 31, 2026 ↗ |
| Invesco S&P SmallCap 600 Revenue ETF Invesco Exchange-Traded Fund Trust II | 42,640 | 803.8K $ | 0.04 % | 0.10 % | as of May 31, 2026 ↗ |
| Principal U.S. Small-Cap ETF Principal Exchange-Traded Funds | 39,743 | 802K $ | 0.03 % | 0.09 % | as of Jun 30, 2026 ↗ |
| VANGUARD S&P SMALL-CAP 600 VALUE INDEX FUND VANGUARD ADMIRAL FUNDS | 37,300 | 703.1K $ | 0.04 % | 0.09 % | as of May 31, 2026 ↗ |
| EQ/2000 Managed Volatility Portfolio EQ Advisors Trust | 36,055 | 727.6K $ | 0.02 % | 0.08 % | as of Jun 30, 2026 ↗ |
| Distillate Small/Mid Cash Flow ETF ETF Series Solutions | 34,221 | 690.6K $ | 0.54 % | 0.08 % | as of Jun 30, 2026 ↗ |
| Fidelity Nasdaq Composite Index Fund Fidelity Concord Street Trust | 29,577 | 557.5K $ | 0.00 % | 0.07 % | as of May 31, 2026 ↗ |
| Nuveen Equity Index Fund TIAA-CREF Funds | 29,234 | 582.9K $ | 0.00 % | 0.07 % | as of Jul 31, 2026 ↗ |
| PSF Small-Cap Stock Index Portfolio Prudential Series Fund | 29,058 | 586.4K $ | 0.04 % | 0.07 % | as of Jun 30, 2026 ↗ |
| JPMorgan Diversified Return U.S. Small Cap Equity ETF J.P. Morgan Exchange-Traded Fund Trust | 27,277 | 543.9K $ | 0.09 % | 0.06 % | as of Jul 31, 2026 ↗ |
| Fidelity Enhanced Small Cap Core ETF Fidelity Covington Trust | 26,494 | 534.6K $ | 0.01 % | 0.06 % | as of Jun 30, 2026 ↗ |
| VANGUARD RUSSELL 2000 VALUE INDEX FUND VANGUARD SCOTTSDALE FUNDS | 26,262 | 495K $ | 0.04 % | 0.06 % | as of May 31, 2026 ↗ |
| Goldman Sachs Small Cap Value Insights Fund Goldman Sachs Trust | 26,212 | 522.7K $ | 0.04 % | 0.06 % | as of Jul 31, 2026 ↗ |
| SmallCap S&P 600 Index Fund Principal Funds, Inc | 25,015 | 498.8K $ | 0.04 % | 0.06 % | as of Jul 31, 2026 ↗ |
| Invesco S&P SmallCap Health Care ETF Invesco Exchange-Traded Fund Trust II | 24,785 | 467.2K $ | 0.36 % | 0.06 % | as of May 31, 2026 ↗ |
| LVIP Franklin Templeton Multi-Factor SMID Cap Equity Fund LINCOLN VARIABLE INSURANCE PRODUCTS TRUST | 24,333 | 491K $ | 0.05 % | 0.06 % | as of Jun 30, 2026 ↗ |
| Transamerica Small/Mid Cap Value TRANSAMERICA FUNDS | 23,600 | 470.6K $ | 0.07 % | 0.06 % | as of Jul 31, 2026 ↗ |
| Empower S&P Small Cap 600 Index Fund EMPOWER FUNDS, INC. | 23,283 | 469.9K $ | 0.04 % | 0.05 % | as of Jun 30, 2026 ↗ |
| LVIP State Street Small-Cap Index Fund LINCOLN VARIABLE INSURANCE PRODUCTS TRUST | 22,900 | 462.1K $ | 0.02 % | 0.05 % | as of Jun 30, 2026 ↗ |
| U.S. CORE EQUITY 2 PORTFOLIO DFA INVESTMENT DIMENSIONS GROUP INC | 22,796 | 454.6K $ | 0.00 % | 0.05 % | as of Jul 31, 2026 ↗ |
| THRIVENT SMALL CAP INDEX PORTFOLIO Thrivent Series Fund, Inc. | 22,295 | 449.9K $ | 0.04 % | 0.05 % | as of Jun 30, 2026 ↗ |
| VANGUARD S&P SMALL-CAP 600 GROWTH INDEX FUND VANGUARD ADMIRAL FUNDS | 21,901 | 412.8K $ | 0.04 % | 0.05 % | as of May 31, 2026 ↗ |
| Transamerica Small/Mid Cap Value VP TRANSAMERICA SERIES TRUST | 21,700 | 437.9K $ | 0.08 % | 0.05 % | as of Jun 30, 2026 ↗ |
| Avantis U.S. Equity ETF American Century ETF Trust | 21,625 | 407.6K $ | 0.00 % | 0.05 % | as of May 31, 2026 ↗ |
| Schwab U.S. Broad Market ETF SCHWAB STRATEGIC TRUST | 21,605 | 407.3K $ | 0.00 % | 0.05 % | as of May 31, 2026 ↗ |
| EQ/Small Company Index Portfolio EQ Advisors Trust | 20,500 | 413.7K $ | 0.02 % | 0.05 % | as of Jun 30, 2026 ↗ |
| Fidelity ZERO Total Market Index Fund Fidelity Concord Street Trust | 19,453 | 387.9K $ | 0.00 % | 0.05 % | as of Jul 31, 2026 ↗ |
| Small-Cap Value Portfolio PACIFIC SELECT FUND | 19,085 | 385.1K $ | 0.09 % | 0.04 % | as of Jun 30, 2026 ↗ |
| Schwab Total Stock Market Index Fund SCHWAB CAPITAL TRUST | 19,039 | 379.6K $ | 0.00 % | 0.04 % | as of Jul 31, 2026 ↗ |
| VANGUARD BALANCED INDEX FUND VANGUARD VALLEY FORGE FUNDS | 18,316 | 369.6K $ | 0.00 % | 0.04 % | as of Jun 30, 2026 ↗ |
| U.S. VECTOR EQUITY PORTFOLIO DFA INVESTMENT DIMENSIONS GROUP INC | 17,210 | 343.2K $ | 0.01 % | 0.04 % | as of Jul 31, 2026 ↗ |
| VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND VANGUARD INSTITUTIONAL INDEX FUNDS | 16,989 | 342.8K $ | 0.00 % | 0.04 % | as of Jun 30, 2026 ↗ |
| U.S. Sustainability Targeted Value Portfolio DFA INVESTMENT DIMENSIONS GROUP INC | 16,838 | 335.7K $ | 0.05 % | 0.04 % | as of Jul 31, 2026 ↗ |
| Small Cap Index Fund Northern Funds | 15,893 | 320.7K $ | 0.02 % | 0.04 % | as of Jun 30, 2026 ↗ |
| BNY Mellon Smallcap Stock Index Fund BNY MELLON INDEX FUNDS, INC. | 15,886 | 316.8K $ | 0.04 % | 0.04 % | as of Jul 31, 2026 ↗ |
| Global X Russell 2000 ETF GLOBAL X FUNDS | 15,437 | 307.8K $ | 0.02 % | 0.04 % | as of Jul 31, 2026 ↗ |
| Fidelity MSCI Health Care Index ETF FIDELITY COVINGTON TRUST | 15,339 | 305.9K $ | 0.01 % | 0.04 % | as of Jul 31, 2026 ↗ |
| Bridge Builder Small/Mid Cap Value Fund Bridge Builder Trust | 14,989 | 302.5K $ | 0.00 % | 0.04 % | as of Jun 30, 2026 ↗ |
| Small Cap Index Fund VALIC Co I | 14,739 | 277.8K $ | 0.02 % | 0.03 % | as of May 31, 2026 ↗ |
| Dimensional VA U.S. Targeted Value Portfolio DFA INVESTMENT DIMENSIONS GROUP INC | 14,477 | 288.7K $ | 0.03 % | 0.03 % | as of Jul 31, 2026 ↗ |
| AVIP AB Small Cap Portfolio AuguStar Variable Insurance Products Fund Inc | 13,430 | 271K $ | 0.09 % | 0.03 % | as of Jun 30, 2026 ↗ |
| Dimensional U.S. Equity Market ETF Dimensional ETF Trust | 12,789 | 255K $ | 0.00 % | 0.03 % | as of Jul 31, 2026 ↗ |
The funds most exposed to it
The weight is the share of a fund's net assets. The holders table ranks funds by number of shares. This one ranks them by the weight of the company in each fund.
| Fund | Weight in fund | |
|---|---|---|
| State Street(R) SPDR(R) S&P(R) Pharmaceuticals ETF SPDR SERIES TRUST | 1.25 % | as of Jun 30, 2026 ↗ |
| PROFUND VP PHARMACEUTICALS ProFunds | 1.21 % | as of Jun 30, 2026 ↗ |
| M3Sixty Small Cap Growth Fund 360 Funds | 1.18 % | as of May 31, 2026 ↗ |
| ETC 6 Meridian Small Cap Equity ETF EXCHANGE TRADED CONCEPTS TRUST | 1.07 % | as of May 31, 2026 ↗ |
| Direxion Daily Pharmaceutical & Medical Bull 3X Shares Direxion Shares ETF Trust | 0.92 % | as of Jul 31, 2026 ↗ |
| Royce Capital Fund - Small-Cap Portfolio ROYCE CAPITAL FUND | 0.91 % | as of Jun 30, 2026 ↗ |
| Royce Small-Cap Value Fund ROYCE FUND | 0.91 % | as of Jun 30, 2026 ↗ |
| PHARMACEUTICALS ULTRASECTOR PROFUND ProFunds | 0.87 % | as of Jul 31, 2026 ↗ |
| Acquirers Small and Micro Deep Value ETF ETF Series Solutions | 0.85 % | as of May 31, 2026 ↗ |
| Invesco S&P SmallCap 600 GARP ETF Invesco Exchange-Traded Fund Trust II | 0.73 % | as of May 31, 2026 ↗ |
Quarter after quarter
Each row is one quarter of SEC filings, newest first. The change compares each quarter with the one before.
| Quarter | Shareholders | Change | Shares | Change |
|---|---|---|---|---|
| 2026Q3 | 243 | -5 | 14,781,547 | -8.2 % |
| 2026Q2 | 248 | +6 | 16,107,768 | +9.1 % |
| 2026Q1 | 242 | -6 | 14,760,571 | +2.5 % |
| 2025Q4 | 248 | +2 | 14,406,777 | -3.4 % |
| 2025Q3 | 246 | -18 | 14,915,152 | -5.5 % |
| 2025Q2 | 264 | -15 | 15,789,678 | -13.7 % |
| 2025Q1 | 279 | -4 | 18,297,805 | -1.7 % |
| 2024Q4 | 283 | +14 | 18,609,156 | +1.8 % |
| 2024Q3 | 269 | -14 | 18,276,651 | +1.0 % |
| 2024Q2 | 283 | -4 | 18,098,383 | -4.2 % |
| 2024Q1 | 287 | -20 | 18,887,338 | -3.8 % |
| 2023Q4 | 307 | 19,640,538 |
Institutional managers
206 managers declare this company to the SEC (Form 13F). The table shows the 25 largest.
| Manager | Shares | Value | |
|---|---|---|---|
| BlackRock, Inc. | 5,421,343 | 106.2M $ | as of Mar 31, 2026 |
| DIMENSIONAL FUND ADVISORS LP | 2,027,947 | 39.7M $ | as of Mar 31, 2026 |
| STATE STREET CORP | 1,607,515 | 31.5M $ | as of Mar 31, 2026 |
| TD Asset Management Inc | 1,541,044 | 30.2M $ | as of Mar 31, 2026 |
| FULLER & THALER ASSET MANAGEMENT, INC. | 1,395,139 | 27.3M $ | as of Mar 31, 2026 |
| MARSHALL WACE, LLP | 1,025,640 | 20.1M $ | as of Mar 31, 2026 |
| AMERICAN CENTURY COMPANIES INC | 1,017,538 | 19.9M $ | as of Mar 31, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | 976,650 | 19.1M $ | as of Mar 31, 2026 |
| Boston Trust Walden Corp | 944,789 | 18.5M $ | as of Mar 31, 2026 |
| Epoch Investment Partners, Inc. | 898,895 | 17.6M $ | as of Mar 31, 2026 |
| D. E. Shaw & Co., Inc. | 665,542 | 13M $ | as of Mar 31, 2026 |
| LSV ASSET MANAGEMENT | 651,714 | 12.8K $ | as of Mar 31, 2026 |
| Invesco Ltd. | 604,774 | 11.8M $ | as of Mar 31, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | 553,900 | 10.9M $ | as of Mar 31, 2026 |
| SYSTEMATIC FINANCIAL MANAGEMENT LP | 452,898 | 8.9M $ | as of Mar 31, 2026 |
| MORGAN STANLEY | 420,337 | 8.2M $ | as of Mar 31, 2026 |
| UBS Group AG | 420,263 | 8.2M $ | as of Mar 31, 2026 |
| ROYCE & ASSOCIATES LP | 406,175 | 8M $ | as of Mar 31, 2026 |
| NORTHERN TRUST CORP | 372,279 | 7.3M $ | as of Mar 31, 2026 |
| MILLENNIUM MANAGEMENT LLC | 371,373 | 7.3M $ | as of Mar 31, 2026 |
| Bridge City Capital, LLC | 335,105 | 6.6M $ | as of Mar 31, 2026 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 330,457 | 6.5M $ | as of Mar 31, 2026 |
| GOLDMAN SACHS GROUP INC | 329,388 | 6.5M $ | as of Mar 31, 2026 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 325,291 | 6.4M $ | as of Mar 31, 2026 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 321,039 | 6.3M $ | as of Mar 31, 2026 |
Declared shareholders of Amphastar Pharmaceuticals Inc
There is 1 beneficial ownership filing. These stakes do not add up. An asset manager that files includes its own funds, which already appear among the funds on this page.
| Shareholder | Declared stake | Shares | |
|---|---|---|---|
| Dimensional Fund Advisors LP | 5.20 % | 2,305,107 | as of Jun 30, 2026 · SCHEDULE 13G |
Funds holding the debt of Amphastar Pharmaceuticals Inc
10 funds declare 10 bond lines of this company. The amount is the one the fund files. It is not a share of the debt, because no regulator publishes the amount outstanding in open access.
| Fund | Bond lines | Value | |
|---|---|---|---|
| Miller Convertible Bond Fund | 1 | 8.2M $ | as of Jul 31, 2026 |
| iShares Convertible Bond ETF | 1 | 6.2M $ | as of Jul 31, 2026 |
| Calamos Market Neutral Income Fund | 1 | 4.5M $ | as of Jul 31, 2026 |
| Global Opportunities Portfolio | 1 | 2.6M $ | as of Jul 31, 2026 |
| Fidelity Convertible Securities Fund | 1 | 1.9M $ | as of May 31, 2026 |
| Multi-Asset Strategy Fund | 1 | 1.1M $ | as of Jul 31, 2026 |
| Fidelity Strategic Dividend and Income Fund | 1 | 791.9K $ | as of May 31, 2026 |
| Multi-Strategy Income Fund | 1 | 679.7K $ | as of Jul 31, 2026 |
| Advent Convertible Bond ETF | 1 | 366.9K $ | as of May 31, 2026 |
| Eaton Vance Income Opportunities ETF | 1 | 163.8K $ | as of Jun 30, 2026 |
Cite this page
Titelia. "Fund shareholders of Amphastar Pharmaceuticals Inc". https://titelia.com/en/stocks/amphastar-pharmaceuticals-inc-US03209R1032