Who owns Bel Fuse (BELFB)
Which tracked institutional funds hold BELFB, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See BELFB company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 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
The tracked-fund tape on BELFB is one-sided between 2026-Q1 and 2026-Q2: 161 added or opened and 38 trimmed or exited — on balance accumulating.
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
BELFB’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes BELFB more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in BELFB 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 2026-Q1 and 2026-Q2, across 283 tracked filers holding BELFB, 195 increased or opened the position and 123 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
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 BELFB between the 2026-Q1 and 2026-Q2 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 26
- Jupiter Topco LLC$197M
- JENNISON ASSOCIATES LLC$97M
- WESTWOOD HOLDINGS GROUP INC$65M
- Alyeska Investment Group, L.P.$30M
- Daiwa Securities Group Inc.$29M
- AMERIPRISE FINANCIAL INC$27M
Full exits 27
- JANUS HENDERSON GROUP PLC$151M
- T. Rowe Price Investment Management, Inc.$113M
- Thrivent Financial for Lutherans$37M
- LORD, ABBETT & CO. LLC$33M
- BESSEMER GROUP INC$27M
- GW&K Investment Management, LLC$26M
Largest adds
- BlackRock, Inc.$186M
- PRICE T ROWE ASSOCIATES INC /MD/$185M
- FMR LLC$178M
- Bank of New York Mellon Corp$120M
- VANGUARD CAPITAL MANAGEMENT LLC$97M
- FRANKLIN RESOURCES INC$77M
Largest trims
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$8M
- VOLORIDGE INVESTMENT MANAGEMENT, LLC$6M
- CITADEL ADVISORS LLC$4M
- DEAN INVESTMENT ASSOCIATES, LLC$4M
- BROWN ADVISORY INC$3M
- TWO SIGMA INVESTMENTS, LP$1M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 1,022,258 | $340M | 8.9% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 1,015,705 | $338M | 8.8% | 2026-Q2 |
| FMR LLC added | 876,104 | $292M | 7.6% | 2026-Q2 |
| Jupiter Topco LLC new | 590,030 | $196M | 5.1% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 555,463 | $185M | 4.8% | 2026-Q2 |
| WASATCH ADVISORS LP added | 489,414 | $163M | 4.3% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 399,104 | $133M | 3.5% | 2026-Q2 |
| Bank of New York Mellon Corp added | 389,896 | $130M | 3.4% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 363,322 | $121M | 3.2% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 300,239 | $100M | 2.6% | 2026-Q2 |
| JENNISON ASSOCIATES LLC new | 292,065 | $97M | 2.5% | 2026-Q2 |
| STATE STREET CORP added | 280,509 | $93M | 2.4% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 260,736 | $87M | 2.3% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 243,293 | $77M | 2.0% | 2026-Q2 |
| Tidal Investments LLC added | 211,805 | $71M | 1.8% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 207,741 | $69M | 1.8% | 2026-Q2 |
| Tema ETFs LLC added | 202,849 | $68M | 1.8% | 2026-Q2 |
| Allspring Global Investments Holdings, LLC added | 198,405 | $63M | 1.6% | 2026-Q2 |
| WESTWOOD HOLDINGS GROUP INC new | 194,237 | $65M | 1.7% | 2026-Q2 |
| Fisher Asset Management, LLC trimmed | 190,776 | $64M | 1.7% | 2026-Q2 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. added | 142,840 | $48M | 1.2% | 2026-Q2 |
| BROWN ADVISORY INC trimmed | 125,953 | $37M | 1.0% | 2026-Q2 |
| NORTHERN TRUST CORP added | 124,169 | $41M | 1.1% | 2026-Q2 |
| ADVISORY RESEARCH INC trimmed | 117,896 | $39M | 1.0% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 112,609 | $38M | 1.0% | 2026-Q2 |
| Invesco Ltd. added | 105,254 | $35M | 0.9% | 2026-Q2 |
| MANGROVE PARTNERS IM, LLC added | 104,706 | $30M | 0.8% | 2026-Q2 |
| LOOMIS SAYLES & CO L P trimmed | 101,031 | $34M | 0.9% | 2026-Q2 |
| Alyeska Investment Group, L.P. new | 91,478 | $30M | 0.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 88,091 | $29M | 0.8% | 2026-Q2 |
| ROYCE & ASSOCIATES LP trimmed | 87,078 | $29M | 0.8% | 2026-Q2 |
| Daiwa Securities Group Inc. new | 86,566 | $29M | 0.8% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 81,589 | $27M | 0.7% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 78,987 | $26M | 0.7% | 2026-Q2 |
| Boston Partners added | 78,597 | $26M | 0.7% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC new | 77,120 | $26M | 0.7% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 74,187 | $25M | 0.6% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 70,160 | $23M | 0.6% | 2026-Q2 |
| GABELLI FUNDS LLC trimmed | 63,300 | $18M | 0.5% | 2026-Q2 |
| MORGAN STANLEY added | 62,302 | $21M | 0.5% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 61,539 | $20M | 0.5% | 2026-Q2 |
| MARSHALL WACE, LLP added | 59,577 | $20M | 0.5% | 2026-Q2 |
| FIRST TRUST ADVISORS LP trimmed | 56,647 | $19M | 0.5% | 2026-Q2 |
| Logan Stone Capital, LLC added | 54,020 | $16M | 0.4% | 2026-Q2 |
| GAMCO INVESTORS, INC. ET AL trimmed | 53,000 | $15M | 0.4% | 2026-Q2 |
| Portolan Capital Management, LLC trimmed | 47,856 | $16M | 0.4% | 2026-Q2 |
| Cable Car Capital, LP trimmed | 46,463 | $14M | 0.4% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 42,480 | $12M | 0.3% | 2026-Q2 |
| UBS Group AG trimmed | 41,117 | $14M | 0.4% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 39,306 | $13M | 0.3% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC added | 37,492 | $12M | 0.3% | 2026-Q2 |
| SEI INVESTMENTS CO added | 37,288 | $12M | 0.3% | 2026-Q2 |
| LPL Financial LLC added | 36,129 | $12M | 0.3% | 2026-Q2 |
| Nuveen, LLC added | 34,851 | $12M | 0.3% | 2026-Q2 |
| POLEN CAPITAL MANAGEMENT LLC trimmed | 32,845 | $11M | 0.3% | 2026-Q2 |
| Grandeur Peak Global Advisors, LLC trimmed | 32,570 | $11M | 0.3% | 2026-Q2 |
| Ghisallo Capital Management LLC new | 30,000 | $10M | 0.3% | 2026-Q2 |
| Hound Partners, LLC trimmed | 28,048 | $8M | 0.2% | 2026-Q2 |
| SG Capital Management LLC added | 26,875 | $9M | 0.2% | 2026-Q2 |
| Emerald Investment Advisers, LLC added | 25,819 | $9M | 0.2% | 2026-Q2 |
| Nitor Capital Management LLC | 25,400 | $8M | 0.2% | 2026-Q2 |
| INVESTORS ASSET MANAGEMENT OF GEORGIA INC /GA/ /ADV trimmed | 24,708 | $8M | 0.2% | 2026-Q2 |
| Swiss National Bank added | 24,200 | $8M | 0.2% | 2026-Q2 |
| CREDIT AGRICOLE S A | 23,700 | $8M | 0.2% | 2026-Q2 |
| Ballast Asset Management, LP trimmed | 23,493 | $8M | 0.2% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 22,167 | $7M | 0.2% | 2026-Q2 |
| Rockefeller Capital Management L.P. added | 22,045 | $7M | 0.2% | 2026-Q2 |
| Creative Planning added | 21,470 | $7M | 0.2% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 20,567 | $7M | 0.2% | 2026-Q2 |
| SEVEN GRAND MANAGERS, LLC new | 20,000 | $7M | 0.2% | 2026-Q2 |
| NATIXIS added | 19,600 | $7M | 0.2% | 2026-Q2 |
| Informed Momentum Co LLC trimmed | 18,924 | $6M | 0.2% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 18,284 | $6M | 0.2% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 18,119 | $6M | 0.2% | 2026-Q2 |
| HERALD INVESTMENT MANAGEMENT Ltd trimmed | 17,950 | $6M | 0.2% | 2026-Q2 |
| Public Sector Pension Investment Board new | 17,411 | $6M | 0.2% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 17,177 | $6M | 0.1% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 15,474 | $5M | 0.1% | 2026-Q2 |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC added | 14,846 | $5M | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 14,836 | $5M | 0.1% | 2026-Q2 |
| Phocas Financial Corp. trimmed | 14,521 | $5M | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 14,450 | $3M | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 14,035 | $5M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 13,108 | $4M | 0.1% | 2026-Q2 |
| TD Asset Management Inc trimmed | 12,770 | $4M | 0.1% | 2026-Q2 |
| North Star Investment Management Corp. | 12,550 | $4M | 0.1% | 2026-Q2 |
| BRIDGES INVESTMENT MANAGEMENT INC added | 12,479 | $4M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 11,344 | $3M | 0.1% | 2026-Q2 |
| Montanaro Asset Management Ltd new | 11,000 | $4M | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 10,941 | $4M | 0.1% | 2026-Q2 |
| RITHOLTZ WEALTH MANAGEMENT trimmed | 10,745 | $4M | 0.1% | 2026-Q2 |
| B. Metzler seel. Sohn & Co. AG added | 10,425 | $3M | 0.1% | 2026-Q2 |
| Legal & General Group Plc added | 9,795 | $3M | 0.1% | 2026-Q2 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 8,476 | $3M | 0.1% | 2026-Q2 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO added | 8,127 | $3M | 0.1% | 2026-Q2 |
| DARK FOREST CAPITAL MANAGEMENT LP added | 7,885 | $3M | 0.1% | 2026-Q2 |
| CAXTON ASSOCIATES LLP added | 7,805 | $3M | 0.1% | 2026-Q2 |
| Sowell Financial Services LLC added | 7,793 | $3M | 0.1% | 2026-Q2 |
| Expect Equity LLC trimmed | 7,715 | $3M | 0.1% | 2026-Q2 |
| BRASADA CAPITAL MANAGEMENT, LP trimmed | 0 | $5M | 0.1% | 2026-Q2 |
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.