BACKBLAZE INC (BLZE)
Institutional ownership reported to the SEC as of Q2 2026, across 20 quarters.
Institutions report 35,613,913 shares against 61,900,000 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $74.9M | 4,722,483 | 0.00% | 8q | +28.2%+$16.5M |
| Driehaus Capital Management LLC | $42.6M | 2,688,044 | 0.25% | new | NEW |
| VANGUARD CAPITAL MANAGEMENT LLC | $39.9M | 2,514,639 | 0.00% | 2q | +7.3%+$2.7M |
| ACADIAN ASSET MANAGEMENT LLC | $28.3M | 1,786,402 | 0.03% | 5q | +9.0%+$2.3M |
| GEODE CAPITAL MANAGEMENT, LLC | $24.2M | 1,525,097 | 0.00% | 19q | +13.4%+$2.9M |
| AWM Investment Company, Inc. | $22.2M | 1,400,166 | 1.93% | 8q | HELD |
| Pillsbury Lake Capital LLC | $21.2M | 1,339,837 | 5.80% | 3q | -31.7%-$9.9M |
| STATE STREET CORP | $19.3M | 1,216,998 | 0.00% | 18q | +9.4%+$1.7M |
| Connor, Clark & Lunn Investment Management Ltd. | $18.3M | 1,156,752 | 0.03% | 13q | +38.8%+$5.1M |
| AQR CAPITAL MANAGEMENT LLC | $16.7M | 1,051,847 | 0.01% | 6q | +58.5%+$6.2M |
| Qube Research & Technologies Ltd | $12.2M | 766,200 | 0.01% | 12q | +77.2%+$5.3M |
| RENAISSANCE TECHNOLOGIES LLC | $12.1M | 762,608 | 0.02% | 18q | -35.0%-$6.5M |
| NEXT CENTURY GROWTH INVESTORS LLC | $10.9M | 687,498 | 0.58% | new | NEW |
| DIMENSIONAL FUND ADVISORS LP | $10.0M | 628,636 | 0.00% | 13q | +21.5%+$1.8M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $9.7M | 613,784 | 0.00% | 2q | -13.3%-$1.5M |
| Nuveen, LLC | $9.2M | 577,841 | 0.00% | 6q | +712.2%+$8.0M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $8.7M | 550,070 | 0.00% | 5q | +83.0%+$4.0M |
| MILLENNIUM MANAGEMENT LLC | $7.9M | 495,435 | 0.00% | 12q | +301.6%+$5.9M |
| NORTHERN TRUST CORP | $7.7M | 483,598 | 0.00% | 19q | +11.6%+$796.0K |
| Jump Financial, LLC | $7.4M | 469,100 | 0.06% | 5q | +700.7%+$6.5M |
| GOLDMAN SACHS GROUP INC | $7.4M | 468,330 | 0.00% | 18q | +47.4%+$2.4M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $7.4M incl. $6.0M options CALL+PUT | 86,641 | 0.00% | 12q | -10.3%-$851.1K |
| Halter Ferguson Financial Inc. | $7.3M | 457,753 | 1.18% | new | NEW |
| VANGUARD FIDUCIARY TRUST CO | $6.7M | 423,644 | 0.00% | 2q | +9.0%+$555.9K |
| MORGAN STANLEY | $6.5M | 407,911 | 0.00% | 19q | +156.7%+$3.9M |
| FMR LLC | $5.6M | 354,493 | 0.00% | 10q | +652.0%+$4.9M |
| P.A.W. CAPITAL CORP | $5.1M | 320,000 | 3.89% | 7q | -11.1%-$634.4K |
| PRELUDE CAPITAL MANAGEMENT, LLC | $5.0M | 316,851 | 0.37% | 3q | -33.2%-$2.5M |
| MARSHALL WACE, LLP | $5.0M | 316,341 | 0.00% | 12q | +413.9%+$4.0M |
| PERKINS CAPITAL MANAGEMENT INC | $4.9M | 308,725 | 3.68% | 16q | -8.9%-$480.6K |
| LAZARD ASSET MANAGEMENT LLC | $4.7M | 297,138 | 0.01% | 12q | +85.3%+$2.2M |
| JANE STREET GROUP, LLC | $4.2M CALL+PUT | options only | 0.00% | 4q | OPTIONS |
| RAYMOND JAMES FINANCIAL INC | $4.0M | 249,686 | 0.00% | 7q | +1446.6%+$3.7M |
| TUDOR INVESTMENT CORP ET AL | $3.9M | 244,903 | 0.01% | 4q | +10.6%+$373.1K |
| BOOTHBAY FUND MANAGEMENT, LLC | $3.8M | 242,386 | 0.05% | 4q | -32.0%-$1.8M |
| JPMORGAN CHASE & CO | $3.6M | 243,341 | 0.00% | 14q | +79.6%+$1.6M |
| Trexquant Investment LP | $3.6M | 226,095 | 0.02% | new | NEW |
| UBS Group AG | $3.4M | 215,721 | 0.00% | 13q | -29.1%-$1.4M |
| NORGES BANK | $3.4M | 215,400 | 0.00% | new | NEW |
| HRT FINANCIAL LP | $3.1M | 195,120 | 0.01% | new | NEW |
| Bank of New York Mellon Corp | $3.1M | 193,812 | 0.00% | 9q | +7.4%+$210.9K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $2.7M | 169,718 | 0.00% | 11q | +40.0%+$768.4K |
| Kultura Capital Management LP | $2.7M CALL | options only | 0.48% | new | OPTIONS |
| Regal Partners Ltd | $2.6M | 163,076 | 0.14% | new | NEW |
| AMERIPRISE FINANCIAL INC | $2.5M | 156,927 | 0.00% | 4q | -11.8%-$332.4K |
| Squarepoint Ops LLC | $2.5M | 155,417 | 0.00% | 4q | +385.1%+$2.0M |
| Jupiter Topco LLC | $2.4M | 151,038 | 0.00% | new | FIRST |
| Cerity Partners LLC | $2.3M | 147,692 | 0.00% | 8q | +1.2%+$27.2K |
| CITADEL ADVISORS LLC | $2.3M CALL+PUT | options only | 0.00% | 19q | OPTIONS |
| SIMPLEX TRADING, LLC | $2.1M incl. $1.0M options CALL+PUT | 69,591 | 0.00% | 3q | +3878.9%+$2.1M |
| IEQ CAPITAL, LLC | $2.1M | 132,416 | 0.01% | 2q | +42.5%+$626.3K |
| FRANKLIN RESOURCES INC | $2.0M | 128,852 | 0.00% | new | NEW |
| TWO SIGMA INVESTMENTS, LP | $2.0M | 123,213 | 0.00% | 12q | +705.3%+$1.7M |
| Cambridge Investment Research Advisors, Inc. | $1.9M | 120,076 | 0.00% | 8q | +167.3%+$1.2M |
| IMC-Chicago, LLC | $1.9M CALL+PUT | options only | 0.00% | 2q | OPTIONS |
| Scientech Research LLC | $1.8M | 112,471 | 1.45% | new | NEW |
| BANK OF AMERICA CORP /DE/ | $1.6M | 102,510 | 0.00% | 15q | +89.9%+$769.5K |
| GROUP ONE TRADING LLC | $1.6M CALL+PUT | options only | 0.00% | 6q | OPTIONS |
| Balyasny Asset Management L.P. | $1.5M | 93,917 | 0.00% | new | NEW |
| Informed Momentum Co LLC | $1.4M | 89,497 | 0.13% | new | NEW |
| CastleKnight Management LP | $1.4M | 86,100 | 0.02% | 12q | -70.6%-$3.3M |
| XTX Topco Ltd | $1.3M | 80,281 | 0.02% | 10q | -36.5%-$730.7K |
| SEI INVESTMENTS CO | $1.2M | 76,147 | 0.00% | 2q | +339.1%+$932.7K |
| SCALAR GAUGE MANAGEMENT, LLC | $1.2M | 75,000 | 0.66% | new | NEW |
| Mariner, LLC | $1.2M | 73,779 | 0.00% | 2q | +75.3%+$502.5K |
| RHUMBLINE ADVISERS | $1.1M | 71,694 | 0.00% | 13q | +7.1%+$75.6K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | $1.1M | 69,800 | 0.02% | 17q | -18.6%-$253.8K |
| LOS ANGELES CAPITAL MANAGEMENT LLC | $995.8K | 62,784 | 0.00% | new | NEW |
| DEUTSCHE BANK AG\ | $924.7K | 58,306 | 0.00% | 9q | -0.7%-$6.8K |
| WELLS FARGO & COMPANY/MN | $915.1K | 57,699 | 0.00% | 15q | +126.7%+$511.4K |
| Cetera Investment Advisers | $909.7K incl. $1.0K options CALL | 57,296 | 0.00% | new | NEW |
| ZACKS INVESTMENT MANAGEMENT | $894.3K | 56,388 | 0.01% | 5q | +183.4%+$578.7K |
| Penbrook Management LLC | $851.7K | 53,700 | 0.54% | 7q | -25.6%-$292.6K |
| Brevan Howard Capital Management LP | $816.6K | 51,485 | 0.01% | 2q | +258.1%+$588.5K |
| D. E. Shaw & Co., Inc. | $795.4K | 50,150 | 0.00% | 11q | -93.2%-$10.9M |
| BARCLAYS PLC | $793.1K | 50,004 | 0.00% | 18q | -49.2%-$767.2K |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P | $793.0K | 50,000 | 0.61% | 3q | -83.1%-$3.9M |
| BNP PARIBAS FINANCIAL MARKETS | $792.1K | 49,943 | 0.00% | 7q | +1.4%+$11.2K |
| PRICE T ROWE ASSOCIATES INC /MD/ | $775.0K | 48,804 | 0.00% | 8q | +10.8%+$75.3K |
| PDT Partners, LLC | $773.7K | 48,780 | 0.04% | 9q | HELD |
| Integrated Quantitative Investments LLC | $701.2K | 44,212 | 0.11% | new | NEW |
| Quadrature Capital Ltd | $686.8K | 43,307 | 0.01% | new | NEW |
| BAILARD, INC. | $672.5K | 42,400 | 0.01% | new | NEW |
| Walleye Trading LLC | $668.1K | 42,124 | 0.00% | new | NEW |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | $646.2K | 36,718 | 0.00% | 2q | +99.5%+$322.3K |
| Quantbot Technologies LP | $577.8K | 36,432 | 0.02% | 5q | +11.8%+$60.9K |
| CANADA PENSION PLAN INVESTMENT BOARD | $574.1K | 36,200 | 0.00% | 3q | -23.3%-$174.5K |
| MetLife Investment Management, LLC | $539.9K | 34,041 | 0.00% | 9q | +79.1%+$238.5K |
| Cornerstone Investment Partners, LLC | $518.3K | 32,677 | 0.02% | new | NEW |
| FULLER & THALER ASSET MANAGEMENT, INC. | $505.4K | 31,867 | 0.00% | new | NEW |
| Invesco Ltd. | $504.0K | 31,779 | 0.00% | 10q | -30.1%-$217.2K |
| Foundations Investment Advisors, LLC | $475.8K | 30,000 | 0.00% | new | NEW |
| SLT Holdings LLC | $475.8K | 30,000 | 0.30% | new | NEW |
| AMERICAN CENTURY COMPANIES INC | $474.2K | 29,899 | 0.00% | new | NEW |
| Belvedere Trading LLC | $471.4K incl. $352.1K options CALL | 7,522 | 0.00% | new | NEW |
| MERCER GLOBAL ADVISORS INC /ADV | $446.7K | 28,167 | 0.00% | 2q | +81.1%+$200.1K |
| CITIGROUP INC | $442.2K | 27,882 | 0.00% | 12q | +833.8%+$394.9K |
| Creative Planning | $440.2K | 27,758 | 0.00% | 2q | +148.6%+$263.1K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $428.5K | 27,015 | 0.00% | 8q | +2.8%+$11.6K |
| Walleye Capital LLC | $423.6K incl. $345.7K options CALL+PUT | 4,908 | 0.00% | new | NEW |
Showing the largest 100 of 174 reported holders.
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-08-24 | 2026-08-19 | Material agreement entered | filing |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-21 | Budman Gleb | CEO and Chairperson | Sold | 12,855 | $203.4K |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 26 | $22.8M | 1,630,179 | 11 | 10 | 3 | 0.0% |
| Q2 2026 | 174 | $584.5M | 35,613,913 | 59 | 68 | 35 | 3.5% |
| Q1 2026 | 140 | $100.9M | 29,050,737 | 23 | 42 | 45 | 0.6% |
| Q4 2025 | 145 | $157.6M | 32,204,878 | 28 | 55 | 36 | 4.1% |
| Q3 2025 | 152 | $283.3M | 30,329,868 | 39 | 46 | 37 | 0.6% |
| Q2 2025 | 131 | $152.2M | 27,539,961 | 31 | 61 | 24 | 0.5% |
| Q1 2025 | 112 | $116.0M | 23,883,390 | 18 | 50 | 28 | 0.6% |
| Q4 2024 | 120 | $140.3M | 23,219,002 | 25 | 47 | 20 | 0.4% |
| Q3 2024 | 105 | $106.8M | 16,567,125 | 21 | 35 | 28 | 0.9% |
| Q2 2024 | 97 | $97.9M | 15,494,369 | 24 | 27 | 28 | 2.5% |
| Q1 2024 | 98 | $167.5M | 15,414,229 | 30 | 36 | 17 | 5.8% |
| Q4 2023 | 74 | $82.5M | 10,809,918 | 18 | 31 | 8 | 0.5% |
| Q3 2023 | 58 | $43.1M | 7,785,952 | 24 | 21 | 4 | 0.7% |
| Q2 2023 | 39 | $22.7M | 5,222,374 | 11 | 14 | 10 | 0.4% |
| Q1 2023 | 36 | $26.1M | 5,112,552 | 8 | 14 | 8 | 1.1% |
| Q4 2022 | 33 | $28.9M | 4,568,297 | 5 | 13 | 7 | 2.8% |
| Q3 2022 | 34 | $22.6M | 4,196,413 | 7 | 12 | 3 | 7.6% |
| Q2 2022 | 29 | $19.0M | 3,383,386 | 4 | 6 | 8 | 6.8% |
| Q1 2022 | 29 | $35.8M | 3,265,333 | 7 | 8 | 11 | 2.8% |
| Q4 2021 | 36 | $81.0M | 4,740,251 | 38 | 0 | 0 | 1.2% |
