Who owns BLFY (BLFY)
Which tracked institutional funds hold BLFY, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See BLFY company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
23 tracked funds added or opened BLFY while 11 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
BLFY’s largest tracked holder by dollar value, GLAZER CAPITAL, LLC, sizes it at 0.5% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.5pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in BLFY divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 109 tracked filers holding BLFY, 62 increased or opened the position and 44 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in BLFY between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 6
- VANGUARD CAPITAL MANAGEMENT LLC$10M
- VANGUARD FIDUCIARY TRUST CO$1M
- VANGUARD PORTFOLIO MANAGEMENT LLC$1M
- Yakira Capital Management, Inc.$1M
- BALYASNY ASSET MANAGEMENT L.P.$1M
- ODDO BHF ASSET MANAGEMENT SAS$674K
Full exits 7
- VANGUARD GROUP INC$11M
- T. Rowe Price Investment Management, Inc.$6M
- Driehaus Capital Management LLC$5M
- Trexquant Investment LP$2M
- ExodusPoint Capital Management, LP$621K
- TD Asset Management Inc$539K
Largest adds
- GARDNER LEWIS ASSET MANAGEMENT L P$13M
- GLAZER CAPITAL, LLC$11M
- First Trust Capital Management L.P.$6M
- PRELUDE CAPITAL MANAGEMENT, LLC$4M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$2M
- MILLENNIUM MANAGEMENT LLC$2M
Largest trims
- DIMENSIONAL FUND ADVISORS LP$2M
- JANE STREET GROUP, LLC$798K
- BARCLAYS PLC$323K
- MORGAN STANLEY$254K
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| GLAZER CAPITAL, LLC added | 1,719,910 | $23M | 12.2% | 2026-Q1 |
| BlackRock, Inc. trimmed | 1,267,125 | $17M | 9.0% | 2026-Q1 |
| GARDNER LEWIS ASSET MANAGEMENT L P added | 1,018,887 | $13M | 7.2% | 2026-Q1 |
| First Trust Capital Management L.P. added | 1,004,006 | $13M | 7.1% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 765,793 | $10M | 5.4% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 684,600 | $9M | 4.8% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 421,058 | $6M | 3.0% | 2026-Q1 |
| STATE STREET CORP trimmed | 411,028 | $5M | 2.9% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 358,672 | $5M | 2.5% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 338,400 | $4M | 2.4% | 2026-Q1 |
| PRELUDE CAPITAL MANAGEMENT, LLC added | 333,785 | $4M | 2.4% | 2026-Q1 |
| Essex Financial Services, Inc. trimmed | 321,281 | $4M | 2.3% | 2026-Q1 |
| ABC ARBITRAGE SA | 200,781 | $3M | 1.4% | 2026-Q1 |
| MANGROVE PARTNERS IM, LLC | 198,659 | $3M | 1.4% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 191,747 | $3M | 1.4% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 154,796 | $2M | 1.1% | 2026-Q1 |
| Squarepoint Ops LLC added | 152,559 | $2M | 1.1% | 2026-Q1 |
| NORTHERN TRUST CORP added | 147,371 | $2M | 1.0% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 124,296 | $2M | 0.9% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 112,808 | $1M | 0.8% | 2026-Q1 |
| Chicago Capital Management, LLC added | 146,012 | $1M | 0.8% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 104,024 | $1M | 0.7% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 98,540 | $1M | 0.7% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL | 97,253 | $1M | 0.7% | 2026-Q1 |
| MORGAN STANLEY trimmed | 97,060 | $1M | 0.7% | 2026-Q1 |
| Yakira Capital Management, Inc. new | 91,649 | $1M | 0.6% | 2026-Q1 |
| Quantinno Capital Management LP added | 89,069 | $1M | 0.6% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. new | 84,856 | $1M | 0.6% | 2026-Q1 |
| NOMURA HOLDINGS INC added | 79,232 | $1M | 0.6% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 68,219 | $903K | 0.5% | 2026-Q1 |
| OMERS ADMINISTRATION Corp added | 64,800 | $858K | 0.5% | 2026-Q1 |
| ODDO BHF ASSET MANAGEMENT SAS new | 50,964 | $674K | 0.4% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 49,739 | $659K | 0.4% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 47,508 | $629K | 0.3% | 2026-Q1 |
| HighTower Advisors, LLC added | 45,003 | $596K | 0.3% | 2026-Q1 |
| JANE STREET GROUP, LLC trimmed | 44,879 | $594K | 0.3% | 2026-Q1 |
| STRS OHIO | 44,400 | $588K | 0.3% | 2026-Q1 |
| Odyssean, LLC added | 43,354 | $574K | 0.3% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 41,064 | $544K | 0.3% | 2026-Q1 |
| OXFORD ASSET MANAGEMENT LLP trimmed | 36,532 | $484K | 0.3% | 2026-Q1 |
| WATER ISLAND CAPITAL LLC new | 35,658 | $472K | 0.3% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 32,559 | $431K | 0.2% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 32,498 | $430K | 0.2% | 2026-Q1 |
| STATE OF WISCONSIN INVESTMENT BOARD added | 32,438 | $429K | 0.2% | 2026-Q1 |
| Nuveen, LLC | 28,990 | $384K | 0.2% | 2026-Q1 |
| LMR Partners LLP new | 26,318 | $348K | 0.2% | 2026-Q1 |
| PenderFund Capital Management Ltd. added | 25,796 | $342K | 0.2% | 2026-Q1 |
| Qube Research & Technologies Ltd new | 23,910 | $317K | 0.2% | 2026-Q1 |
| Round Hill Asset Management trimmed | 23,758 | $315K | 0.2% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 23,678 | $313K | 0.2% | 2026-Q1 |
| STIFEL FINANCIAL CORP new | 22,900 | $303K | 0.2% | 2026-Q1 |
| Cerity Partners LLC trimmed | 22,758 | $301K | 0.2% | 2026-Q1 |
| XTX Topco Ltd new | 20,031 | $265K | 0.1% | 2026-Q1 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 20,000 | $265K | 0.1% | 2026-Q1 |
| Corient Private Wealth LLC added | 19,792 | $262K | 0.1% | 2026-Q1 |
| Murchinson Ltd. new | 18,800 | $249K | 0.1% | 2026-Q1 |
| WITTENBERG INVESTMENT MANAGEMENT, INC. trimmed | 18,195 | $241K | 0.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. | 18,220 | $226K | 0.1% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 16,605 | $220K | 0.1% | 2026-Q1 |
| Legal & General Group Plc added | 16,119 | $213K | 0.1% | 2026-Q1 |
| PNC FINANCIAL SERVICES GROUP, INC. added | 16,062 | $213K | 0.1% | 2026-Q1 |
| Vanguard Personalized Indexing Management, LLC new | 15,926 | $211K | 0.1% | 2026-Q1 |
| Virtu Financial LLC added | 15,723 | $208K | 0.1% | 2026-Q1 |
| MERCER GLOBAL ADVISORS INC /ADV added | 15,499 | $205K | 0.1% | 2026-Q1 |
| CWA Asset Management Group, LLC new | 13,000 | $172K | 0.1% | 2026-Q1 |
| MetLife Investment Management, LLC | 12,749 | $169K | 0.1% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 12,562 | $167K | 0.1% | 2026-Q1 |
| Schonfeld Strategic Advisors LLC added | 11,948 | $158K | 0.1% | 2026-Q1 |
| FARLEY CAPITAL L.P. | 11,263 | $149K | 0.1% | 2026-Q1 |
| UBS Group AG trimmed | 10,691 | $142K | 0.1% | 2026-Q1 |
| SEI INVESTMENTS CO added | 10,125 | $134K | 0.1% | 2026-Q1 |
| SUMMIT SECURITIES GROUP LLC new | 9,953 | $132K | 0.1% | 2026-Q1 |
| Tower Research Capital LLC (TRC) added | 9,528 | $126K | 0.1% | 2026-Q1 |
| SG Americas Securities, LLC trimmed | 9,534 | $126K | 0.1% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 8,560 | $113K | 0.1% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 7,179 | $95K | 0.1% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 7,424 | $95K | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 860,458 | $11M | 5.7% | 2025-Q4 stale |
| T. Rowe Price Investment Management, Inc. trimmed | 479,245 | $6M | 3.2% | 2025-Q4 stale |
| Driehaus Capital Management LLC | 400,997 | $5M | 2.7% | 2025-Q4 stale |
| Trexquant Investment LP added | 137,014 | $2M | 0.9% | 2025-Q4 stale |
| ExodusPoint Capital Management, LP new | 49,992 | $621K | 0.3% | 2025-Q4 stale |
| TD Asset Management Inc trimmed | 43,376 | $539K | 0.3% | 2025-Q4 stale |
| LOS ANGELES CAPITAL MANAGEMENT LLC trimmed | 60,822 | $514K | 0.3% | 2025-Q4 stale |
| CITADEL ADVISORS LLC trimmed | 55,080 | $501K | 0.3% | 2025-Q3 stale |
| CANTOR FITZGERALD, L. P. new | 23,154 | $288K | 0.2% | 2025-Q4 stale |
| HRT FINANCIAL LP added | 21,685 | $269K | 0.1% | 2025-Q4 stale |
| Invesco Ltd. trimmed | 21,111 | $262K | 0.1% | 2025-Q4 stale |
| BANK OF AMERICA CORP /DE/ added | 20,512 | $255K | 0.1% | 2025-Q4 stale |
| PARK AVENUE SECURITIES LLC | 24,177 | $220K | 0.1% | 2025-Q3 stale |
| OCCUDO QUANTITATIVE STRATEGIES LP added | 15,094 | $188K | 0.1% | 2025-Q4 stale |
| GSA CAPITAL PARTNERS LLP trimmed | 14,548 | $181K | 0.1% | 2025-Q4 stale |
| ENVESTNET ASSET MANAGEMENT INC new | 17,468 | $159K | 0.1% | 2025-Q3 stale |
| PANAGORA ASSET MANAGEMENT INC trimmed | 16,525 | $158K | 0.1% | 2025-Q2 stale |
| TWO SIGMA ADVISERS, LP added | 15,000 | $138K | 0.1% | 2025-Q1 stale |
| SlateStone Wealth, LLC | 11,100 | $138K | 0.1% | 2025-Q4 stale |
| FIRST TRUST ADVISORS LP trimmed | 13,935 | $128K | 0.1% | 2025-Q1 stale |
| INTECH INVESTMENT MANAGEMENT LLC new | 13,528 | $124K | 0.1% | 2025-Q1 stale |
| PDT Partners, LLC trimmed | 12,260 | $117K | 0.1% | 2025-Q2 stale |
| MARSHALL WACE, LLP new | 11,614 | $106K | 0.1% | 2025-Q3 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.