56% buyers of institutions opening or closing positions this quarter
5 more new buyers than exits, ownership rose 12.55 percentage points vs the prior quarter, and 1 well-known fund manager in the top 25.
56% buyers of institutions opening or closing positions this quarter
49.5% institutional ownership
GARDNER LEWIS ASSET portfolio allocation
Institutional ownership vs Banks - Regional peers
No Form 4 insider transactions on file
Latest positioning in BLFY across 13F flow, ownership shift, marquee holders, and holder-count growth.
Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in BLFY held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 1.3M | $16.8M | -7.2% | 6.103% | 0.00% |
| 2 | GARDNER LEWIS ASSET MANAGEMENT L P | 1.0M | $13.5M | +3870.4% | 4.908% | 2.92% |
| 3 | Vivaldi Asset Management, LLC | 1.0M | $13.3M | +66.7% | 4.836% | 0.70% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 766K | $10.1M | β | 3.689% | 0.00% |
| 5 | DIMENSIONAL FUND ADVISORS LP | 685K | $9.1M | -19.7% | 3.297% | 0.00% |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | 421K | $5.6M | +0.8% | 2.028% | 0.00% |
| 7 | STATE STREET CORP | 411K | $5.4M | -10.0% | 1.980% | 0.00% |
| 8 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 359K | $4.7M | +71.2% | 1.728% | 0.00% |
| 9 | RENAISSANCE TECHNOLOGIES LLC | 338K | $4.5M | +58.0% | 1.630% | 0.01% |
| 10 | PRELUDE CAPITAL MANAGEMENT, LLC | 334K | $4.4M | +1975.5% | 1.608% | 0.34% |
| 11 | Essex Financial Services, Inc. | 321K | $4.3M | -1.5% | 1.547% | 0.24% |
| 12 | ABC ARBITRAGE SA | 201K | $2.7M | 0.0% | 0.967% | 0.35% |
| 13 | MANGROVE PARTNERS | 199K | $2.6M | 0.0% | 0.957% | 0.21% |
| 14 | MILLENNIUM MANAGEMENT LLC | 192K | $2.5M | +438.5% | 0.924% | 0.00% |
| 15 | Russell Investments Group, Ltd. | 155K | $2.0M | +604.4% | 0.746% | 0.00% |
| 16 | Squarepoint Ops LLC | 153K | $2.0M | +141.8% | 0.735% | 0.00% |
| 17 | NORTHERN TRUST CORP | 147K | $2.0M | +3.3% | 0.710% | 0.00% |
| 18 | GOLDMAN SACHS GROUP INC | 124K | $1.6M | +36.5% | 0.599% | 0.00% |
| 19 | VANGUARD FIDUCIARY TRUST CO | 113K | $1.5M | β | 0.543% | 0.00% |
| 20 | Chicago Capital Management, LLC | 146K | $1.5M | +639.9% | 0.703% | 1.20% |
| 21 | VANGUARD PORTFOLIO MANAGEMENT LLC | 104K | $1.4M | β | 0.501% | 0.00% |
| 22 | D. E. Shaw & Co., Inc. | 99K | $1.3M | -10.3% | 0.475% | 0.00% |
| 23 | TUDOR INVESTMENT CORP ET AL | 97K | $1.3M | 0.0% | 0.468% | 0.00% |
| 24 | MORGAN STANLEY | 97K | $1.3M | -21.6% | 0.468% | 0.00% |
| 25 | Yakira Capital Management, Inc. | 92K | $1.2M | β | 0.441% | 0.36% |
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 BLFY β a direct measure of their conviction.
Filings activity in BLFY during Q1 2026, grouped by how each filer changed its position.
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 | 106 | +5.0% | 49.55% | +12.55 pp | $136M | +34% |
| Q4 2025 | 101 | +29% | 37.00% | +11.60 pp | $102M | +46% |
| Q3 2025 | 78 | +0.0% | 25.40% | 4.68 pp | $70M | 16% |
| Q2 2025 | 78 | 3.7% | 30.08% | 3.17 pp | $83M | 9.5% |
| Q1 2025 | 81 | +1.3% | 33.25% | +2.09 pp | $91M | +6.7% |
| Q4 2024 | 80 | +8.1% | 31.16% | 2.44 pp | $86M | 7.3% |
| Q3 2024 | 74 | +8.8% | 33.60% | +4.52 pp | $92M | +16% |
| Q2 2024 | 68 | β | 29.08% | β | $80M | 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.
No recent Form 4 insider transactions on file for BLFY.
Quick answers to the most common questions about buying BLFY stock.
Based on Q1 2026 13F filings, institutional ownership of Blue Foundry Bancorp stands at 49.5%, held across 106 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of BLFY, with approximately 1,267,125 shares worth $0.02B as of Q1 2026.
Yes β 1 widely-followed marquee investor appear among the top 25 institutional holders of BLFY, including RENAISSANCE TECHNOLOGIES LLC.
Our composite Smart Money Score for BLFY is 59 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
23 institutions opened new positions in BLFY during Q1 2026, while 18 fully exited. 64 added to existing positions and 18 trimmed.
BLFY institutional ownership rose by 12.55 percentage points quarter-over-quarter, with a net change of β holders.
The top 10 institutions account for 64.2% of all reported 13F value in BLFY, and the top 25 account for 85.6%.
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.