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.
Sign in or subscribeLargest 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 |
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.