Who owns CSN (CSN)
Which tracked institutional funds hold CSN, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See CSN 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
78 tracked funds added or opened CSN while 75 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
CSN’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 CSN more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in CSN 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 292 tracked filers holding CSN, 139 increased or opened the position and 184 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 CSN 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 25
- VANGUARD PORTFOLIO MANAGEMENT LLC$143M
- VANGUARD CAPITAL MANAGEMENT LLC$97M
- BALYASNY ASSET MANAGEMENT L.P.$61M
- Man Group plc$37M
- ODDO BHF ASSET MANAGEMENT SAS$34M
- Capula Management Ltd$21M
Full exits 33
- VANGUARD GROUP INC$228M
- Beryl Capital Management LLC$54M
- SOROS FUND MANAGEMENT LLC$29M
- ACADIAN ASSET MANAGEMENT LLC$12M
- Absolute Gestao de Investimentos Ltda.$10M
- Hillsdale Investment Management Inc.$8M
Largest adds
- UBS Group AG$109M
- NEXPOINT ASSET MANAGEMENT, L.P.$39M
- ALPINE ASSOCIATES MANAGEMENT INC.$29M
- MILLENNIUM MANAGEMENT LLC$24M
- HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND$22M
- TWO SIGMA INVESTMENTS, LP$21M
Largest trims
- BlackRock, Inc.$82M
- Boston Trust Walden Corp$51M
- DIMENSIONAL FUND ADVISORS LP$50M
- LSV ASSET MANAGEMENT$39M
- GOLDMAN SACHS GROUP INC$23M
- Qube Research & Technologies Ltd$19M
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 | 2,871,291 | $230M | 8.4% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 1,792,485 | $143M | 5.2% | 2026-Q1 |
| UBS Group AG added | 1,439,487 | $115M | 4.2% | 2026-Q1 |
| FULLER & THALER ASSET MANAGEMENT, INC. trimmed | 1,415,709 | $113M | 4.1% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 1,214,334 | $97M | 3.5% | 2026-Q1 |
| STATE STREET CORP added | 1,063,835 | $85M | 3.1% | 2026-Q1 |
| NEXPOINT ASSET MANAGEMENT, L.P. added | 895,961 | $72M | 2.6% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 848,423 | $68M | 2.5% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 838,419 | $67M | 2.4% | 2026-Q1 |
| Magnetar Financial LLC added | 807,431 | $65M | 2.3% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 49,679,000 | $61M | 2.2% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 581,782 | $47M | 1.7% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. added | 596,502 | $46M | 1.7% | 2026-Q1 |
| MORGAN STANLEY trimmed | 561,671 | $45M | 1.6% | 2026-Q1 |
| AQR Arbitrage LLC added | 541,948 | $43M | 1.6% | 2026-Q1 |
| ROYAL BANK OF CANADA added | 505,844 | $40M | 1.5% | 2026-Q1 |
| Allianz Asset Management GmbH added | 490,139 | $39M | 1.4% | 2026-Q1 |
| Man Group plc added | 465,729 | $37M | 1.4% | 2026-Q1 |
| FIRST TRUST ADVISORS LP trimmed | 465,034 | $37M | 1.4% | 2026-Q1 |
| ODDO BHF ASSET MANAGEMENT SAS new | 420,000 | $34M | 1.2% | 2026-Q1 |
| ALPINE ASSOCIATES MANAGEMENT INC. added | 402,515 | $32M | 1.2% | 2026-Q1 |
| LSV ASSET MANAGEMENT trimmed | 397,170 | $32M | 1.2% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 390,993 | $31M | 1.1% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 372,071 | $30M | 1.1% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 355,132 | $28M | 1.0% | 2026-Q1 |
| Bragg Financial Advisors, Inc trimmed | 339,228 | $27M | 1.0% | 2026-Q1 |
| VALUE HOLDINGS MANAGEMENT CO. LLC | 338,180 | $27M | 1.0% | 2026-Q1 |
| Sagefield Capital LP added | 324,506 | $26M | 0.9% | 2026-Q1 |
| SYQUANT CAPITAL SAS added | 310,140 | $25M | 0.9% | 2026-Q1 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND added | 308,247 | $25M | 0.9% | 2026-Q1 |
| BARCLAYS PLC trimmed | 308,014 | $25M | 0.9% | 2026-Q1 |
| Invesco Ltd. trimmed | 307,705 | $25M | 0.9% | 2026-Q1 |
| NORTHERN TRUST CORP added | 304,796 | $24M | 0.9% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 285,306 | $23M | 0.8% | 2026-Q1 |
| FIL Ltd trimmed | 282,169 | $23M | 0.8% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 278,300 | $22M | 0.8% | 2026-Q1 |
| Capula Management Ltd added | 257,088 | $21M | 0.7% | 2026-Q1 |
| HSBC HOLDINGS PLC trimmed | 247,635 | $20M | 0.7% | 2026-Q1 |
| Groupe la Francaise added | 199,677 | $16M | 0.6% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 187,533 | $15M | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 187,065 | $15M | 0.5% | 2026-Q1 |
| FMR LLC added | 170,846 | $14M | 0.5% | 2026-Q1 |
| MARSHALL WACE, LLP added | 170,700 | $14M | 0.5% | 2026-Q1 |
| ProShare Advisors LLC trimmed | 162,507 | $13M | 0.5% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 161,713 | $13M | 0.5% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 154,684 | $12M | 0.5% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 154,122 | $12M | 0.4% | 2026-Q1 |
| Centiva Capital, LP added | 150,050 | $12M | 0.4% | 2026-Q1 |
| CREDIT INDUSTRIEL ET COMMERCIAL added | 148,867 | $12M | 0.4% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 143,073 | $11M | 0.4% | 2026-Q1 |
| HENNESSY ADVISORS INC trimmed | 139,767 | $11M | 0.4% | 2026-Q1 |
| GABELLI FUNDS LLC added | 127,540 | $10M | 0.4% | 2026-Q1 |
| GHP Investment Advisors, Inc. trimmed | 114,117 | $9M | 0.3% | 2026-Q1 |
| Defiance ETFs, LLC trimmed | 111,637 | $9M | 0.3% | 2026-Q1 |
| Penserra Capital Management LLC trimmed | 111,637 | $9M | 0.3% | 2026-Q1 |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS trimmed | 106,680 | $9M | 0.3% | 2026-Q1 |
| NORGES BANK added | 132,672 | $8M | 0.3% | 2026-Q1 |
| Public Sector Pension Investment Board added | 96,620 | $8M | 0.3% | 2026-Q1 |
| GABELLI & Co INVESTMENT ADVISERS, INC. added | 95,578 | $8M | 0.3% | 2026-Q1 |
| Qube Research & Technologies Ltd trimmed | 93,568 | $7M | 0.3% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 90,868 | $7M | 0.3% | 2026-Q1 |
| Nuveen, LLC trimmed | 89,194 | $7M | 0.3% | 2026-Q1 |
| Verition Fund Management LLC trimmed | 83,468 | $7M | 0.2% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 82,832 | $7M | 0.2% | 2026-Q1 |
| Kapitalo Investimentos Ltda new | 77,074 | $6M | 0.2% | 2026-Q1 |
| ABC ARBITRAGE SA trimmed | 75,205 | $6M | 0.2% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 75,107 | $6M | 0.2% | 2026-Q1 |
| Governors Lane LP | 72,540 | $6M | 0.2% | 2026-Q1 |
| Legal & General Group Plc trimmed | 70,708 | $6M | 0.2% | 2026-Q1 |
| CANADA PENSION PLAN INVESTMENT BOARD added | 60,800 | $5M | 0.2% | 2026-Q1 |
| Swiss National Bank trimmed | 56,400 | $5M | 0.2% | 2026-Q1 |
| Kendall Capital Management trimmed | 55,355 | $4M | 0.2% | 2026-Q1 |
| Universal- Beteiligungs- und Servicegesellschaft mbH trimmed | 53,553 | $4M | 0.2% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 49,113 | $4M | 0.1% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 47,477 | $4M | 0.1% | 2026-Q1 |
| Edgestream Partners, L.P. new | 46,997 | $4M | 0.1% | 2026-Q1 |
| New York Life Investment Management LLC added | 43,382 | $3M | 0.1% | 2026-Q1 |
| CHATHAM CAPITAL GROUP, INC. trimmed | 43,088 | $3M | 0.1% | 2026-Q1 |
| HERALD INVESTMENT MANAGEMENT Ltd | 41,240 | $3M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 2,975,952 | $228M | 8.3% | 2025-Q4 stale |
| Beryl Capital Management LLC new | 709,435 | $54M | 2.0% | 2025-Q4 stale |
| SOROS FUND MANAGEMENT LLC new | 377,410 | $29M | 1.1% | 2025-Q4 stale |
| PALISADE CAPITAL MANAGEMENT, LP trimmed | 438,285 | $28M | 1.0% | 2025-Q3 stale |
| FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ added | 377,361 | $24M | 0.9% | 2025-Q3 stale |
| ACADIAN ASSET MANAGEMENT LLC trimmed | 155,771 | $12M | 0.4% | 2025-Q4 stale |
| Absolute Gestao de Investimentos Ltda. new | 133,995 | $10M | 0.4% | 2025-Q4 stale |
| Hillsdale Investment Management Inc. trimmed | 103,700 | $8M | 0.3% | 2025-Q4 stale |
| Carmignac Gestion new | 103,097 | $8M | 0.3% | 2025-Q4 stale |
| SCHRODER INVESTMENT MANAGEMENT GROUP added | 91,662 | $7M | 0.3% | 2025-Q4 stale |
| Slotnik Capital, LLC new | 70,000 | $5M | 0.2% | 2025-Q4 stale |
| Erste Asset Management GmbH added | 82,100 | $5M | 0.2% | 2025-Q3 stale |
| Ellsworth Advisors, LLC new | 75,323 | $5M | 0.2% | 2025-Q1 stale |
| SEIZERT CAPITAL PARTNERS, LLC added | 69,187 | $4M | 0.2% | 2025-Q3 stale |
| River Road Asset Management, LLC trimmed | 54,854 | $4M | 0.2% | 2025-Q4 stale |
| Willis Investment Counsel added | 54,097 | $4M | 0.2% | 2025-Q4 stale |
| NORDEA INVESTMENT MANAGEMENT AB added | 62,926 | $4M | 0.1% | 2025-Q3 stale |
| Schonfeld Strategic Advisors LLC added | 51,900 | $4M | 0.1% | 2025-Q4 stale |
| Jain Global LLC new | 56,579 | $4M | 0.1% | 2025-Q2 stale |
| LEUTHOLD GROUP, LLC added | 46,602 | $4M | 0.1% | 2025-Q4 stale |
| Assenagon Asset Management S.A. trimmed | 42,303 | $3M | 0.1% | 2025-Q4 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.