Who owns Columbia Financial, Inc. (CLBK)
Which tracked institutional funds hold CLBK, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See CLBK company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 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
20 tracked funds added or opened CLBK while 10 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
CLBK’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 conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in CLBK 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 126 tracked filers holding CLBK, 54 increased or opened the position and 62 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 CLBK 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 7
- VANGUARD CAPITAL MANAGEMENT LLC$21M
- VANGUARD PORTFOLIO MANAGEMENT LLC$19M
- Ursa Fund Management, LLC$9M
- VANGUARD FIDUCIARY TRUST CO$3M
- MANGROVE PARTNERS IM, LLC$2M
- Gator Capital Management, LLC$841K
Full exits 5
- VANGUARD GROUP INC$36M
- MARSHALL WACE, LLP$1M
- TWO SIGMA ADVISERS, LP$1M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$1M
- LOS ANGELES CAPITAL MANAGEMENT LLC$910K
Largest adds
- DIMENSIONAL FUND ADVISORS LP$5M
- BlackRock, Inc.$4M
- RENAISSANCE TECHNOLOGIES LLC$2M
- MORGAN STANLEY$2M
- STATE STREET CORP$2M
- TUDOR INVESTMENT CORP ET AL$2M
Largest trims
- CITADEL ADVISORS LLC$881K
- JPMORGAN CHASE & CO$776K
- BARCLAYS PLC$547K
- Squarepoint Ops LLC$293K
- WELLS FARGO & COMPANY/MN$293K
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 |
|---|---|---|---|---|
| BlackRock, Inc. trimmed | 2,309,717 | $40M | 13.8% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 2,040,794 | $36M | 12.2% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 1,201,220 | $21M | 7.2% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 1,091,647 | $19M | 6.5% | 2026-Q1 |
| STATE STREET CORP trimmed | 918,325 | $16M | 5.5% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 756,945 | $13M | 4.5% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 676,066 | $12M | 4.0% | 2026-Q1 |
| Ursa Fund Management, LLC new | 500,000 | $9M | 3.0% | 2026-Q1 |
| MORGAN STANLEY added | 354,266 | $6M | 2.1% | 2026-Q1 |
| NORTHERN TRUST CORP added | 242,694 | $4M | 1.5% | 2026-Q1 |
| D. E. Shaw & Co., Inc. added | 229,013 | $4M | 1.4% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 222,000 | $4M | 1.3% | 2026-Q1 |
| Creative Planning trimmed | 177,855 | $3M | 1.1% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 176,519 | $3M | 1.1% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 170,601 | $3M | 1.0% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 143,694 | $3M | 0.9% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL added | 111,166 | $2M | 0.7% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 107,157 | $2M | 0.6% | 2026-Q1 |
| UBS Group AG added | 104,061 | $2M | 0.6% | 2026-Q1 |
| CITIGROUP INC added | 103,366 | $2M | 0.6% | 2026-Q1 |
| MANGROVE PARTNERS IM, LLC new | 100,911 | $2M | 0.6% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 88,200 | $2M | 0.5% | 2026-Q1 |
| FIRST TRUST ADVISORS LP trimmed | 77,566 | $1M | 0.5% | 2026-Q1 |
| Nuveen, LLC added | 76,433 | $1M | 0.5% | 2026-Q1 |
| JANE STREET GROUP, LLC trimmed | 75,228 | $1M | 0.4% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC trimmed | 66,923 | $1M | 0.4% | 2026-Q1 |
| Swiss National Bank | 60,888 | $1M | 0.4% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 58,927 | $1M | 0.4% | 2026-Q1 |
| Quantinno Capital Management LP added | 55,718 | $976K | 0.3% | 2026-Q1 |
| Squarepoint Ops LLC trimmed | 53,279 | $933K | 0.3% | 2026-Q1 |
| PEAPACK GLADSTONE FINANCIAL CORP | 49,150 | $861K | 0.3% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 48,450 | $848K | 0.3% | 2026-Q1 |
| Gator Capital Management, LLC new | 48,015 | $841K | 0.3% | 2026-Q1 |
| NORGES BANK trimmed | 45,590 | $684K | 0.2% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 35,292 | $618K | 0.2% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. trimmed | 39,570 | $615K | 0.2% | 2026-Q1 |
| Invesco Ltd. trimmed | 33,967 | $595K | 0.2% | 2026-Q1 |
| Minerva Advisors LLC | 33,794 | $592K | 0.2% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 31,245 | $547K | 0.2% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 28,533 | $500K | 0.2% | 2026-Q1 |
| Legal & General Group Plc trimmed | 28,389 | $497K | 0.2% | 2026-Q1 |
| OSAIC HOLDINGS, INC. trimmed | 25,300 | $443K | 0.2% | 2026-Q1 |
| SeaCrest Wealth Management, LLC | 24,100 | $422K | 0.1% | 2026-Q1 |
| VANGUARD ASSET MANAGEMENT, Ltd new | 23,857 | $418K | 0.1% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 23,950 | $415K | 0.1% | 2026-Q1 |
| DEUTSCHE BANK AG\ | 21,149 | $370K | 0.1% | 2026-Q1 |
| Zurcher Kantonalbank (Zurich Cantonalbank) added | 20,824 | $365K | 0.1% | 2026-Q1 |
| Numerai GP LLC trimmed | 19,977 | $350K | 0.1% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 18,608 | $326K | 0.1% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC | 17,955 | $315K | 0.1% | 2026-Q1 |
| Engineers Gate Manager LP added | 17,865 | $313K | 0.1% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 17,069 | $299K | 0.1% | 2026-Q1 |
| Sequoia Financial Advisors, LLC trimmed | 16,365 | $287K | 0.1% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 16,194 | $284K | 0.1% | 2026-Q1 |
| MetLife Investment Management, LLC | 16,126 | $282K | 0.1% | 2026-Q1 |
| Roxbury Financial LLC trimmed | 15,900 | $278K | 0.1% | 2026-Q1 |
| Crown Wealth Group, LLC | 15,500 | $271K | 0.1% | 2026-Q1 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 15,204 | $266K | 0.1% | 2026-Q1 |
| Hudson Capital Management LLC | 14,632 | $256K | 0.1% | 2026-Q1 |
| Roundview Capital LLC | 14,385 | $252K | 0.1% | 2026-Q1 |
| COMMONWEALTH EQUITY SERVICES, LLC added | 13,201 | $231K | 0.1% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC | 13,129 | $230K | 0.1% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 12,943 | $227K | 0.1% | 2026-Q1 |
| Rafferty Asset Management, LLC trimmed | 12,825 | $225K | 0.1% | 2026-Q1 |
| Aigen Investment Management, LP added | 12,667 | $222K | 0.1% | 2026-Q1 |
| BARCLAYS PLC trimmed | 12,087 | $212K | 0.1% | 2026-Q1 |
| Kestra Advisory Services, LLC added | 11,873 | $208K | 0.1% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 11,240 | $197K | 0.1% | 2026-Q1 |
| Campbell & CO Investment Adviser LLC added | 11,020 | $193K | 0.1% | 2026-Q1 |
| SEI INVESTMENTS CO trimmed | 10,670 | $187K | 0.1% | 2026-Q1 |
| Mariner, LLC trimmed | 10,601 | $186K | 0.1% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 10,504 | $184K | 0.1% | 2026-Q1 |
| Strategic Advisors LLC | 10,459 | $183K | 0.1% | 2026-Q1 |
| Vanguard Investments Australia, Ltd. new | 8,822 | $154K | 0.1% | 2026-Q1 |
| FMR LLC trimmed | 8,806 | $154K | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 2,296,187 | $36M | 12.2% | 2025-Q4 stale |
| T. Rowe Price Investment Management, Inc. trimmed | 951,930 | $14M | 4.9% | 2025-Q1 stale |
| MARSHALL WACE, LLP trimmed | 88,551 | $1M | 0.5% | 2025-Q4 stale |
| TWO SIGMA ADVISERS, LP added | 80,200 | $1M | 0.4% | 2025-Q4 stale |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 66,030 | $1M | 0.4% | 2025-Q4 stale |
| CW Advisors, LLC trimmed | 70,113 | $1M | 0.3% | 2025-Q2 stale |
| LOS ANGELES CAPITAL MANAGEMENT LLC added | 60,607 | $910K | 0.3% | 2025-Q4 stale |
| Delta Financial Group, Inc. trimmed | 36,056 | $554K | 0.2% | 2025-Q1 stale |
| Amundi | 24,130 | $371K | 0.1% | 2025-Q3 stale |
| Point72 Asset Management, L.P. new | 22,679 | $352K | 0.1% | 2025-Q4 stale |
| Dynamic Technology Lab Private Ltd trimmed | 22,018 | $342K | 0.1% | 2025-Q4 stale |
| Verition Fund Management LLC added | 22,824 | $331K | 0.1% | 2025-Q2 stale |
| MILLENNIUM MANAGEMENT LLC trimmed | 20,752 | $322K | 0.1% | 2025-Q4 stale |
| PDT Partners, LLC trimmed | 20,585 | $299K | 0.1% | 2025-Q2 stale |
| Balyasny Asset Management L.P. added | 15,142 | $235K | 0.1% | 2025-Q4 stale |
| OCCUDO QUANTITATIVE STRATEGIES LP added | 15,093 | $219K | 0.1% | 2025-Q2 stale |
| Schonfeld Strategic Advisors LLC added | 14,475 | $217K | 0.1% | 2025-Q3 stale |
| TWO SIGMA SECURITIES, LLC added | 13,459 | $209K | 0.1% | 2025-Q4 stale |
| Wilmington Savings Fund Society, FSB trimmed | 14,275 | $207K | 0.1% | 2025-Q2 stale |
| SG Americas Securities, LLC added | 13,301 | $207K | 0.1% | 2025-Q4 stale |
| Corebridge Financial, Inc. trimmed | 13,387 | $201K | 0.1% | 2025-Q1 stale |
| Equitable Holdings, Inc. | 12,741 | $191K | 0.1% | 2025-Q1 stale |
| Vident Advisory, LLC added | 11,815 | $177K | 0.1% | 2025-Q1 stale |
| INTECH INVESTMENT MANAGEMENT LLC trimmed | 10,950 | $170K | 0.1% | 2025-Q4 stale |
| Point72 Asia (Singapore) Pte. Ltd. new | 10,213 | $153K | 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.