Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in BLZE held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 3.7M | $12.7M | -1.5% | 6.138% | 0.00% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 2.3M | $8.1M | β | 3.907% | 0.00% |
| 3 | Pillsbury Lake Capital LLC | 2.0M | $6.8M | +13.4% | 3.268% | 3.07% |
| 4 | Whetstone Capital Advisors, LLC | 1.5M | $5.2M | 0.0% | 2.533% | 1.82% |
| 5 | AWM Investment Company, Inc. | 1.4M | $4.8M | -54.4% | 2.333% | 0.53% |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | 1.3M | $4.6M | +0.3% | 2.241% | 0.00% |
| 7 | RENAISSANCE TECHNOLOGIES LLC | 1.2M | $4.0M | +44.6% | 1.954% | 0.01% |
| 8 | STATE STREET CORP | 1.1M | $3.8M | +5.0% | 1.854% | 0.00% |
| 9 | Connor, Clark & Lunn Investment Management Ltd. | 833K | $2.9M | -12.8% | 1.388% | 0.01% |
| 10 | D. E. Shaw & Co., Inc. | 739K | $2.5M | +57.6% | 1.231% | 0.00% |
| 11 | VANGUARD PORTFOLIO MANAGEMENT LLC | 708K | $2.4M | β | 1.179% | 0.00% |
| 12 | AQR CAPITAL MANAGEMENT LLC | 664K | $2.3M | +439.9% | 1.106% | 0.00% |
| 13 | Point72 Asset Management, L.P. | 541K | $1.9M | -4.8% | 0.901% | 0.00% |
| 14 | DIMENSIONAL FUND ADVISORS LP | 518K | $1.8M | +152.3% | 0.862% | 0.00% |
| 15 | PRELUDE CAPITAL MANAGEMENT, LLC | 474K | $1.6M | -8.2% | 0.790% | 0.13% |
| 16 | NORTHERN TRUST CORP | 433K | $1.5M | +3.6% | 0.722% | 0.00% |
| 17 | Qube Research & Technologies Ltd | 432K | $1.5M | -29.7% | 0.720% | 0.00% |
| 18 | VANGUARD FIDUCIARY TRUST CO | 389K | $1.3M | β | 0.647% | 0.00% |
| 19 | P.A.W. CAPITAL CORP | 360K | $1.2M | +20.0% | 0.600% | 3.38% |
| 20 | BOOTHBAY FUND MANAGEMENT, LLC | 357K | $1.2M | +32.3% | 0.594% | 0.03% |
| 21 | PERKINS CAPITAL MANAGEMENT INC | 339K | $1.2M | +21.6% | 0.565% | 1.10% |
| 22 | CITADEL ADVISORS LLC | 329K | $1.1M | +110.1% | 0.548% | 0.00% |
| 23 | GOLDMAN SACHS GROUP INC | 318K | $1.1M | -15.9% | 0.529% | 0.00% |
| 24 | UBS Group AG | 304K | $1.0M | +75.2% | 0.507% | 0.00% |
| 25 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 301K | $1.0M | +56.0% | 0.501% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in BLZE β a direct measure of their conviction.
Filings activity in BLZE during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new BLZE position in Q1 2026
Institutions that fully closed their BLZE position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 133 | 7.0% | 19.55% | 11.09 pp | $93M | 36% |
| Q4 2025 | 143 | 2.1% | 30.64% | 26.43 pp | $146M | 46% |
| Q3 2025 | 146 | +15% | 57.07% | +27.07 pp | $271M | +90% |
| Q2 2025 | 127 | +14% | 30.00% | +7.49 pp | $143M | +33% |
| Q1 2025 | 111 | 7.5% | 22.51% | 3.96 pp | $107M | 15% |
| Q4 2024 | 120 | +18% | 26.47% | +7.64 pp | $126M | +41% |
| Q3 2024 | 102 | +7.4% | 18.83% | +2.37 pp | $89M | +14% |
| Q2 2024 | 95 | β | 16.46% | β | $78M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying BLZE stock.
Based on Q1 2026 13F filings, institutional ownership of Backblaze, Inc. stands at 19.6%, held across 133 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of BLZE, with approximately 3,683,899 shares worth $0.01B as of Q1 2026.
Yes β 3 widely-followed marquee investors appear among the top 25 institutional holders of BLZE, including RENAISSANCE TECHNOLOGIES LLC, Point72 Asset Management, L.P., CITADEL ADVISORS LLC.
Our composite Smart Money Score for BLZE is 44 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
24 institutions opened new positions in BLZE during Q1 2026, while 34 fully exited. 23 added to existing positions and 85 trimmed.
BLZE institutional ownership fell by 11.09 percentage points quarter-over-quarter, with a net change of -10 holders.
The top 10 institutions account for 59.8% of all reported 13F value in BLZE, and the top 25 account for 83.8%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Backblaze, Inc. (BLZE) Institutional Ownership