CRBU · Caribou Biosciences, Inc. · Held by Funds
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Registered funds — mutual funds, ETFs and closed-end funds — whose latest Form N-PORT portfolio report holds this exact listed security, matched by CUSIP. Each row is one fund position with its size, value and weight in that fund.
Fund Ownership of CRBU by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 9.74% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 1.50% | 1,618,288 |
| Index ETFs | 8.24% | 8,899,684 |
| Active ETFs | 0.49% | 524,030 |
| Active funds | 1.05% | 1,129,855 |
| Unclassified | 0.15% | 162,983 |
| All registered funds | 11.42% | 12,334,840 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
Funds holding CRBU
103 fund positions| Fund | Ticker | Balance | Value | % of Fund | Side | Reported | Open |
|---|---|---|---|---|---|---|---|
| VANGUARD TOTAL STOCK MARKET INDEX FUND | — | 3,013,973 | $5,304,592 | 0.00% | Long | 2026-06-30 | |
| iShares Russell 2000 ETF | IWM | 2,292,562 | $4,034,909 | 0.00% | Long | 2026-06-30 | |
| VANGUARD EXTENDED MARKET INDEX FUND | — | 1,113,215 | $1,959,258 | 0.00% | Long | 2026-06-30 | |
| iShares Russell 2000 Value ETF | IWN | 881,080 | $1,550,701 | 0.01% | Long | 2026-06-30 | |
| Fidelity Small Cap Index Fund | FSSNX | 997,353 | $1,456,135 | 0.00% | Long | 2026-07-31 | |
| iShares Biotechnology ETF | IBB | 628,598 | $1,106,332 | 0.01% | Long | 2026-06-30 | |
| VANGUARD RUSSELL 2000 INDEX FUND | — | 526,684 | $811,093 | 0.00% | Long | 2026-08-31 | |
| Fidelity Extended Market Index Fund | FSMAX | 447,261 | $688,782 | 0.00% | Long | 2026-08-31 | |
| Schwab U.S. Small-Cap ETF | SCHA | 421,359 | $648,893 | 0.00% | Long | 2026-08-31 | |
| iShares Micro-Cap ETF | IWC | 308,420 | $542,819 | 0.04% | Long | 2026-06-30 | |
| BRUCE FUND | BRUFX | 250,000 | $440,000 | 0.12% | Long | 2026-06-30 | |
| Dimensional U.S. Small Cap ETF | DFAS | 255,338 | $372,793 | 0.00% | Long | 2026-07-31 | |
| AXS Green Alpha ETF | NXTE | 201,851 | $355,258 | 0.62% | Long | 2026-06-30 | |
| Schwab Small-Cap Index Fund | SWSSX | 223,613 | $326,475 | 0.00% | Long | 2026-07-31 | |
| Master Small Cap Index Series | — | 171,661 | $302,123 | 0.01% | Long | 2026-06-30 | |
| Invesco Russell 2000 Dynamic Multifactor ETF | OMFS | 165,499 | $254,868 | 0.09% | Long | 2026-08-31 | |
| U.S. SMALL CAP PORTFOLIO | DFSTX | 170,883 | $249,489 | 0.00% | Long | 2026-07-31 | |
| Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF | GSSC | 152,421 | $234,728 | 0.02% | Long | 2026-08-31 | |
| Fidelity Total Market Index Fund | FSKAX | 148,686 | $228,976 | 0.00% | Long | 2026-08-31 | |
| Fidelity Small Cap Value Index Fund | FISVX | 127,774 | $224,882 | 0.01% | Long | 2026-06-30 | |
| Fidelity Series Total Market Index Fund | FCFMX | 140,761 | $216,772 | 0.00% | Long | 2026-08-31 | |
| Avantis U.S. Small Cap Equity ETF | AVSC | 140,580 | $216,493 | 0.01% | Long | 2026-08-31 | |
| Ultra-Small Company Market Fund | BRSIX | 113,500 | $199,760 | 0.13% | Long | 2026-06-30 | |
| Nuveen Small Cap Blend Index Fund | — | 123,516 | $180,333 | 0.00% | Long | 2026-07-31 | |
| EQ/2000 Managed Volatility Portfolio | — | 99,861 | $175,755 | 0.00% | Long | 2026-06-30 | |
| U.S. MICRO CAP PORTFOLIO | DFSCX | 109,650 | $160,089 | 0.00% | Long | 2026-07-31 | |
| Global X Genomics & Biotechnology ETF | GNOM | 86,896 | $133,820 | 0.15% | Long | 2026-08-31 | |
| VANGUARD RUSSELL 2000 VALUE INDEX FUND | — | 85,082 | $131,026 | 0.01% | Long | 2026-08-31 | |
| Kelly CRISPR & Gene Editing Technology ETF | — | 21,784 | $127,872 | 4.94% | Long | 2023-11-30 | |
| Goldman Sachs Absolute Return Tracker Fund | — | 82,387 | $126,876 | 0.00% | Long | 2026-08-31 | |
| LVIP State Street Small-Cap Index Fund | — | 70,200 | $123,552 | 0.01% | Long | 2026-06-30 | |
| Schwab U.S. Broad Market ETF | SCHB | 79,882 | $123,018 | 0.00% | Long | 2026-08-31 | |
| Invesco RAFI US 1500 Small-Mid ETF | PRFZ | 82,309 | $120,171 | 0.00% | Long | 2026-07-31 | |
| Diversified Equity Alpha Master Portfolio | — | 67,363 | $118,559 | 0.00% | Long | 2026-06-30 | |
| Dimensional U.S. Core Equity 2 ETF | DFAC | 74,931 | $109,399 | 0.00% | Long | 2026-07-31 | |
| NVIT Multi-Manager Small Company Fund | — | 51,874 | $91,298 | 0.02% | Long | 2026-06-30 | |
| Range Cancer Therapeutics ETF | CNCR | 77,530 | $90,710 | 1.02% | Long | 2025-02-28 | |
| VANGUARD BALANCED INDEX FUND | — | 50,567 | $88,998 | 0.00% | Long | 2026-06-30 | |
| Small Cap Index Fund | NSIDX | 48,145 | $84,735 | 0.01% | Long | 2026-06-30 | |
| SMALL CAP EQUITY FUND | — | 40,308 | $70,942 | 0.01% | Long | 2026-06-30 | |
| NVIT Small Cap Value Fund | — | 39,626 | $69,742 | 0.03% | Long | 2026-06-30 | |
| Schwab Total Stock Market Index Fund | SWTSX | 46,922 | $68,506 | 0.00% | Long | 2026-07-31 | |
| Global X Russell 2000 ETF | RSSL | 43,883 | $64,069 | 0.00% | Long | 2026-07-31 | |
| Fidelity ZERO Total Market Index Fund | FZROX | 43,719 | $63,830 | 0.00% | Long | 2026-07-31 | |
| Small Cap Index Fund | VCSLX | 40,140 | $61,816 | 0.00% | Long | 2026-08-31 | |
| VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND | — | 30,813 | $54,231 | 0.00% | Long | 2026-06-30 | |
| STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO | SSMHX | 29,000 | $51,040 | 0.00% | Long | 2026-06-30 | |
| Small-Cap Index Portfolio | — | 26,446 | $46,545 | 0.01% | Long | 2026-06-30 | |
| Fidelity ZERO Extended Market Index Fund | FZIPX | 30,044 | $43,864 | 0.00% | Long | 2026-07-31 | |
| Small Cap Index Trust | — | 21,367 | $37,606 | 0.01% | Long | 2026-06-30 |