Funds holding Spero Therapeutics Inc
18 funds declare a position · 4 ETFs and 14 other funds · 5.6M $ · US84833T1034
Each line carries its report date.
| Rank | Fund | Shares | Value | Weight | |
|---|---|---|---|---|---|
| 1 | VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 1,236,776 | 2.9M $ | 0.00 % | as of Mar 31, 2026 · Original filing |
| 2 | VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS | 516,108 | 1.2M $ | 0.00 % | as of Mar 31, 2026 · Original filing |
| 3 | Fidelity Extended Market Index Fund Fidelity Concord Street Trust | 207,504 | 450.3K $ | 0.00 % | as of Feb 28, 2026 · Original filing |
| 4 | Fidelity Total Market Index Fund Fidelity Concord Street Trust | 107,797 | 233.9K $ | 0.00 % | as of Feb 28, 2026 · Original filing |
| 5 | Ultra-Small Company Market Fund Bridgeway Funds, Inc. | 64,800 | 151.6K $ | 0.12 % | as of Mar 31, 2026 · Original filing |
| 6 | Fidelity Series Total Market Index Fund Fidelity Concord Street Trust | 61,168 | 132.7K $ | 0.00 % | as of Feb 28, 2026 · Original filing |
| 7 | Omni Small-Cap Value Fund Bridgeway Funds, Inc. | 50,000 | 117K $ | 0.01 % | as of Mar 31, 2026 · Original filing |
| 8 | Schwab Total Stock Market Index Fund SCHWAB CAPITAL TRUST | 28,565 | 71.7K $ | 0.00 % | as of Apr 30, 2026 · Original filing |
| 9 | Invesco NASDAQ Future Gen 200 ETF Invesco Exchange-Traded Fund Trust II | 27,529 | 59.7K $ | 0.42 % | as of Feb 28, 2026 · Original filing |
| 10 | VANGUARD BALANCED INDEX FUND VANGUARD VALLEY FORGE FUNDS | 24,176 | 56.6K $ | 0.00 % | as of Mar 31, 2026 · Original filing |
| 11 | VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND VANGUARD INSTITUTIONAL INDEX FUNDS | 22,820 | 53.4K $ | 0.00 % | as of Mar 31, 2026 · Original filing |
| 12 | Fidelity Nasdaq Composite Index Fund Fidelity Concord Street Trust | 19,478 | 42.3K $ | 0.00 % | as of Feb 28, 2026 · Original filing |
| 13 | Dimensional U.S. Small Cap ETF Dimensional ETF Trust | 15,934 | 40K $ | 0.00 % | as of Apr 30, 2026 · Original filing |
| 14 | Invesco RAFI US 1500 Small-Mid ETF Invesco Exchange-Traded Fund Trust | 12,694 | 31.9K $ | 0.00 % | as of Apr 30, 2026 · Original filing |
| 15 | Small Cap Core Fund Northern Funds | 6,106 | 14.3K $ | 0.00 % | as of Mar 31, 2026 · Original filing |
| 16 | Blackstone Alternative Multi-Strategy Fund Blackstone Alternative Investment Funds | 5,800 | 13.6K $ | 0.00 % | as of Mar 31, 2026 · Original filing |
| 17 | Dimensional U.S. Core Equity 2 ETF Dimensional ETF Trust | 4,874 | 12.2K $ | as of Apr 30, 2026 · Original filing | |
| 18 | Victory Extended Market Index Fund Victory Portfolios III | 4,664 | 11.7K $ | 0.00 % | as of Apr 30, 2026 · Original filing |
Institutional managers
47 managers declare this company to the SEC (Form 13F). These positions are not counted in the totals above: a manager and its own funds file separately.
| Manager | Shares | Value | |
|---|---|---|---|
| GSK plc | 9,190,606 | 21.5M $ | as of Mar 31, 2026 |
| Pfizer Inc | 2,362,348 | 5.5M $ | as of Mar 31, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | 1,189,235 | 2.8M $ | as of Mar 31, 2026 |
| Alphabet Inc. | 889,979 | 2.1M $ | as of Mar 31, 2026 |
| TWO SIGMA INVESTMENTS, LP | 885,631 | 2.1M $ | as of Mar 31, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | 519,922 | 1.2M $ | as of Mar 31, 2026 |
| BlackRock, Inc. | 433,202 | 1M $ | as of Mar 31, 2026 |
| Anson Funds Management LP | 421,956 | 987.4K $ | as of Mar 31, 2026 |
| CITADEL ADVISORS LLC | 376,458 | 880.9K $ | as of Mar 31, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 333,115 | 779.5K $ | as of Mar 31, 2026 |
| STATE STREET CORP | 214,751 | 502.5K $ | as of Mar 31, 2026 |
| Ionic Capital Management LLC | 195,939 | 458.5K $ | as of Mar 31, 2026 |
| Squarepoint Ops LLC | 194,301 | 454.7K $ | as of Mar 31, 2026 |
| MARSHALL WACE, LLP | 157,072 | 367.5K $ | as of Mar 31, 2026 |
| NORTHERN TRUST CORP | 120,984 | 283.1K $ | as of Mar 31, 2026 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 114,800 | 268.6K $ | as of Mar 31, 2026 |
| JANE STREET GROUP, LLC | 106,345 | 248.8K $ | as of Mar 31, 2026 |
| Shay Capital LLC | 70,354 | 164.6K $ | as of Mar 31, 2026 |
| Point72 Asset Management, L.P. | 59,668 | 139.6K $ | as of Mar 31, 2026 |
| Invesco Ltd. | 45,374 | 106.2K $ | as of Mar 31, 2026 |
| Quadrature Capital Ltd | 40,128 | 93.9K $ | as of Mar 31, 2026 |
| Capital Asset Advisory Services LLC | 32,548 | 92.4K $ | as of Mar 31, 2026 |
| OMERS ADMINISTRATION Corp | 39,400 | 92.2K $ | as of Mar 31, 2026 |
| Verdad Advisers, LP | 33,455 | 78.3K $ | as of Mar 31, 2026 |
| SIMPLEX TRADING, LLC | 30,304 | 70.9K $ | as of Mar 31, 2026 |