BLZE Backblaze, Inc.
Backblaze, Inc. (BLZE) Institutional Ownership
What the institutions did with BLZE last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 4.7M | 13.3% |
| Driehaus Capital Management LLC | 2.7M | 7.5% |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.5M | 7.1% |
| ACADIAN ASSET MANAGEMENT LLC | 1.8M | 5.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.5M | 4.3% |
| AWM Investment Company, Inc. | 1.4M | 3.9% |
| Pillsbury Lake Capital LLC | 1.3M | 3.8% |
| STATE STREET CORP | 1.2M | 3.4% |
| Connor, Clark & Lunn Investment Management Ltd. | 1.2M | 3.2% |
| AQR CAPITAL MANAGEMENT LLC | 1.1M | 3.0% |
| Qube Research & Technologies Ltd | 766.2K | 2.2% |
| RENAISSANCE TECHNOLOGIES LLC | 762.6K | 2.1% |
| NEXT CENTURY GROWTH INVESTORS LLC | 687.5K | 1.9% |
| DIMENSIONAL FUND ADVISORS LP | 628.6K | 1.8% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 613.8K | 1.7% |
| Nuveen, LLC | 577.8K | 1.6% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 550.1K | 1.5% |
| MILLENNIUM MANAGEMENT LLC | 495.4K | 1.4% |
| NORTHERN TRUST CORP | 483.6K | 1.4% |
| Jump Financial, LLC | 469.1K | 1.3% |
| GOLDMAN SACHS GROUP INC | 468.3K | 1.3% |
| Halter Ferguson Financial Inc. | 457.8K | 1.3% |
| VANGUARD FIDUCIARY TRUST CO | 423.6K | 1.2% |
| MORGAN STANLEY | 407.9K | 1.1% |
| FMR LLC | 354.5K | 1.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Driehaus Capital Management LLC | New | 0 | 2.7M | +2.7M |
| Whetstone Capital Advisors, LLC | Sold Out | 1.5M | 0 | -1.5M |
| BlackRock, Inc. | Increased | 3.7M | 4.7M | +1.0M |
| D. E. Shaw & Co., Inc. | Reduced | 739.0K | 50.2K | -688.9K |
| NEXT CENTURY GROWTH INVESTORS LLC | New | 0 | 687.5K | +687.5K |
| Pillsbury Lake Capital LLC | Reduced | 2.0M | 1.3M | -621.4K |
| Point72 Asset Management, L.P. | Sold Out | 540.6K | 0 | -540.6K |
| Nuveen, LLC | Increased | 71.1K | 577.8K | +506.7K |
| Halter Ferguson Financial Inc. | New | 0 | 457.8K | +457.8K |
| Jump Financial, LLC | Increased | 58.6K | 469.1K | +410.5K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 1.2M | 762.6K | -410.0K |
| AQR CAPITAL MANAGEMENT LLC | Increased | 663.5K | 1.1M | +388.3K |
| MILLENNIUM MANAGEMENT LLC | Increased | 123.4K | 495.4K | +372.1K |
| Qube Research & Technologies Ltd | Increased | 432.4K | 766.2K | +333.8K |
| Connor, Clark & Lunn Investment Management Ltd. | Increased | 833.3K | 1.2M | +323.5K |
| FMR LLC | Increased | 47.1K | 354.5K | +307.4K |
| CITADEL ADVISORS LLC | Sold Out | 304.9K | 0 | -304.9K |
| MARSHALL WACE, LLP | Increased | 61.6K | 316.3K | +254.8K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Increased | 300.5K | 550.1K | +249.6K |
| MORGAN STANLEY | Increased | 158.9K | 407.9K | +249.0K |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P | Reduced | 295.0K | 50.0K | -245.0K |
| RAYMOND JAMES FINANCIAL INC | Increased | 16.1K | 249.7K | +233.5K |
| Trexquant Investment LP | New | 0 | 226.1K | +226.1K |
| CastleKnight Management LP | Reduced | 293.3K | 86.1K | -207.2K |
| HRT FINANCIAL LP | New | 0 | 195.1K | +195.1K |
| GSA CAPITAL PARTNERS LLP | Sold Out | 191.0K | 0 | -191.0K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 1.3M | 1.5M | +179.9K |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Sold Out | 174.6K | 0 | -174.6K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 2.3M | 2.5M | +170.2K |
| Regal Partners Ltd | New | 0 | 163.1K | +163.1K |
| Numerai GP LLC | Sold Out | 160.3K | 0 | -160.3K |
| PRELUDE CAPITAL MANAGEMENT, LLC | Reduced | 474.0K | 316.9K | -157.2K |
| GOLDMAN SACHS GROUP INC | Increased | 317.7K | 468.3K | +150.6K |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 1.6M | 1.8M | +147.8K |
| LAZARD ASSET MANAGEMENT LLC | Increased | 160.3K | 297.1K | +136.8K |
| FRANKLIN RESOURCES INC | New | 0 | 128.9K | +128.9K |
| Squarepoint Ops LLC | Increased | 32.0K | 155.4K | +123.4K |
| BOOTHBAY FUND MANAGEMENT, LLC | Reduced | 356.7K | 242.4K | -114.3K |
| Scientech Research LLC | New | 0 | 112.5K | +112.5K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 517.6K | 628.6K | +111.1K |
| TWO SIGMA INVESTMENTS, LP | Increased | 15.3K | 123.2K | +107.9K |
| JPMORGAN CHASE & CO | Increased | 135.5K | 243.3K | +107.9K |
| STATE STREET CORP | Increased | 1.1M | 1.2M | +104.3K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | 707.9K | 613.8K | -94.1K |
| Balyasny Asset Management L.P. | New | 0 | 93.9K | +93.9K |
| Informed Momentum Co LLC | New | 0 | 89.5K | +89.5K |
| UBS Group AG | Reduced | 304.1K | 215.7K | -88.4K |
| JANE STREET GROUP, LLC | Sold Out | 76.0K | 0 | -76.0K |
| Cambridge Investment Research Advisors, Inc. | Increased | 44.9K | 120.1K | +75.2K |
| SCALAR GAUGE MANAGEMENT, LLC | New | 0 | 75.0K | +75.0K |
| SIMPLEX TRADING, LLC | Increased | 1.7K | 69.6K | +67.8K |
| LOS ANGELES CAPITAL MANAGEMENT LLC | New | 0 | 62.8K | +62.8K |
| SEI INVESTMENTS CO | Increased | 17.3K | 76.1K | +58.8K |
| Cetera Investment Advisers | New | 0 | 57.3K | +57.3K |
| Engineers Gate Manager LP | Sold Out | 55.9K | 0 | -55.9K |
| Russell Investments Group, Ltd. | Reduced | 68.0K | 17.0K | -51.0K |
| NORTHERN TRUST CORP | Increased | 433.4K | 483.6K | +50.2K |
| BANK OF AMERICA CORP /DE/ | Increased | 54.0K | 102.5K | +48.5K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Increased | 121.3K | 169.7K | +48.5K |
| BARCLAYS PLC | Reduced | 98.4K | 50.0K | -48.4K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.