BLUE FOUNDRY BANCORP (BLFY) Top Institutional Shareholders
BLUE FOUNDRY BANCORP (BLFY) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $135.99M in BLFY holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of BLFY tracked by InsiderSet, reporting ownership valued at approximately $16.78M in its March 31, 2026 SEC Form 13F filing.
The top 10 institutional shareholders tracked on this page collectively account for approximately 64% of the total disclosed BLFY value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Gardner Lewis Asset Management L P, First Trust Capital Management L.P., and several other long-term asset managers with concentrated positions in BLUE FOUNDRY BANCORP (BLFY).
This page ranks the largest institutional BLFY shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
106
Total Reported Value
$135.99M
Largest Holder
Blackrock, Inc.
Largest Position
$16.78M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
123
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 1,267,125 | $16,776,735 | — | — | — | |
| Gardner Lewis Asset Management L P | 2.92% | 1,018,887 | $13,490,064 | — | — | — | |
| First Trust Capital Management L.P. | 0.70% | 1,004,006 | $13,293,039 | — | — | — | |
| Vanguard Capital Management Llc | 0.00% | 765,793 | $10,139,099 | — | — | — | |
| Dimensional Fund Advisors Lp | 0.00% | 684,600 | $9,063,199 | — | — | — | |
| Geode Capital Management, Llc | 0.00% | 421,058 | $5,576,693 | — | — | — | |
| State Street Corp | 0.00% | 411,028 | $5,442,011 | — | — | — | |
| Arrowstreet Capital, Limited Partnership | 0.00% | 358,672 | $4,748,817 | — | — | — | |
| Renaissance Technologies LLC | Jim Simons | 0.01% | 338,400 | $4,480,416 | — | — | — |
| Prelude Capital Management, Llc | 0.34% | 333,785 | $4,419,313 | — | — | — | |
| Essex Financial Services, Inc. | 0.24% | 321,281 | $4,253,767 | — | — | — | |
| Abc Arbitrage Sa | 0.35% | 200,781 | $2,658,340 | — | — | — | |
| Mangrove Partners Im, Llc | 0.21% | 198,659 | $2,630,245 | — | — | — | |
| Millennium Management Llc | 0.00% | 191,747 | $2,538,730 | — | — | — | |
| Russell Investments Group, Ltd. | 0.00% | 154,796 | $2,049,497 | — | — | — | |
| Squarepoint Ops Llc | 0.00% | 152,559 | $2,019,881 | — | — | — | |
| Northern Trust Corp | 0.00% | 147,371 | $1,951,192 | — | — | — | |
| Goldman Sachs Group Inc | 0.00% | 124,296 | $1,645,679 | — | — | — | |
| Vanguard Fiduciary Trust Co | 0.00% | 112,808 | $1,493,578 | — | — | — | |
| Chicago Capital Management, Llc | 1.20% | 146,012 | $1,453,659 | — | — | — | |
| Vanguard Portfolio Management Llc | 0.00% | 104,024 | $1,377,278 | — | — | — | |
| D. E. Shaw & Co., Inc. | 0.00% | 98,540 | $1,304,670 | — | — | — | |
| Tudor Investment Corp Et Al | 0.01% | 97,253 | $1,287,630 | — | — | — | |
| Morgan Stanley | 0.00% | 97,060 | $1,285,075 | — | — | — | |
| Yakira Capital Management, Inc. | 0.36% | 91,649 | $1,213,433 | — | — | — | |
| Quantinno Capital Management Lp | 0.00% | 89,069 | $1,179,274 | — | — | — | |
| Balyasny Asset Management L.P. | 0.00% | 84,856 | $1,123,493 | — | — | — | |
| Nomura Holdings Inc | 0.01% | 79,232 | $1,049,032 | — | — | — | |
| Two Sigma Investments, Lp | 0.00% | 68,219 | $903,220 | — | — | — | |
| Omers Administration Corp | 0.01% | 64,800 | $857,952 | — | — | — | |
| Oddo Bhf Asset Management Sas | 0.03% | 50,964 | $673,795 | — | — | — | |
| Charles Schwab Investment Management Inc | 0.00% | 49,739 | $658,544 | — | — | — | |
| Bank Of New York Mellon Corp | 0.00% | 47,508 | $629,006 | — | — | — | |
| Hightower Advisors, Llc | 0.00% | 45,003 | $595,840 | — | — | — | |
| Jane Street Group, Llc | 0.00% | 44,879 | $594,198 | — | — | — | |
| Strs Ohio | 0.00% | 44,400 | $587,856 | — | — | — | |
| Odyssean, Llc | 0.21% | 43,354 | $574,007 | — | — | — | |
| Susquehanna International Group, Llp | 0.00% | 41,064 | $543,687 | — | — | — | |
| Oxford Asset Management Llp | 0.21% | 36,532 | $483,684 | — | — | — | |
| Water Island Capital Llc | 0.06% | 35,658 | $472,112 | — | — | — | |
| American Century Companies Inc | 0.00% | 32,559 | $431,081 | — | — | — | |
| Point72 Asset Management, L.P. | 0.00% | 32,498 | $430,274 | — | — | — | |
| State Of Wisconsin Investment Board | 0.00% | 32,438 | $429,479 | — | — | — | |
| Nuveen, Llc | 0.00% | 28,990 | $383,827 | — | — | — | |
| Lmr Partners Llp | 0.00% | 26,318 | $348,450 | — | — | — | |
| Penderfund Capital Management Ltd. | 0.05% | 25,796 | $341,539 | — | — | — | |
| Qube Research & Technologies Ltd | 0.00% | 23,910 | $316,568 | — | — | — | |
| Round Hill Asset Management | 0.21% | 23,758 | $314,556 | — | — | — | |
| Rhumbline Advisers | 0.00% | 23,678 | $313,490 | — | — | — | |
| Stifel Financial Corp | 0.00% | 22,900 | $303,196 | — | — | — |
Frequently asked questions about BLFY
Who owns the most BLFY stock?
The largest holders of BLFY are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for BLUE FOUNDRY BANCORP (BLFY).
Is BLFY widely held by superinvestors?
Many widely followed stocks like BLFY appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly BLFY is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.