Who owns Mercer International (MERC)
Which tracked institutional funds hold MERC, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MERC 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 MERC is one-sided between 2026-Q1 and 2026-Q2: 0 added or opened and 19 trimmed or exited — on balance reducing.
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
MERC’s largest tracked holder by dollar value, Boundary Creek Advisors LP, sizes it at 53.5% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 53.5pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in MERC 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 63 tracked filers holding MERC, 23 increased or opened the position and 37 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
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 MERC 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.
Full exits 3
- AMERICAN CENTURY COMPANIES INC$1M
- Solas Capital Management, LLC$1M
- GSA CAPITAL PARTNERS LLP$718K
Largest trims
- IAT REINSURANCE CO LTD.$24M
- Atlas FRM LLC$4M
- REDWOOD CAPITAL MANAGEMENT, LLC$4M
- TORONTO DOMINION BANK$3M
- DIMENSIONAL FUND ADVISORS LP$2M
- BARCLAYS PLC$2M
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 |
|---|---|---|---|---|
| REDWOOD CAPITAL MANAGEMENT, LLC | 4,648,133 | $3M | 7.5% | 2026-Q2 |
| BARCLAYS PLC added | 3,950,970 | $3M | 6.4% | 2026-Q2 |
| TORONTO DOMINION BANK | 3,300,000 | $2M | 5.3% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 1,963,354 | $1M | 3.2% | 2026-Q2 |
| WHITEBOX ADVISORS LLC added | 1,468,738 | $969K | 2.4% | 2026-Q2 |
| BlackRock, Inc. added | 1,209,362 | $798K | 2.0% | 2026-Q2 |
| Benefit Street Partners LLC | 787,371 | $520K | 1.3% | 2026-Q2 |
| FRANKLIN RESOURCES INC | 787,371 | $520K | 1.3% | 2026-Q2 |
| IAT REINSURANCE CO LTD. added | 18,220,000 | $416K | 1.0% | 2026-Q2 |
| Atlas FRM LLC trimmed | 596,791 | $394K | 1.0% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 582,361 | $384K | 0.9% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 500,415 | $330K | 0.8% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC trimmed | 475,860 | $314K | 0.8% | 2026-Q2 |
| Verition Fund Management LLC | 408,317 | $269K | 0.7% | 2026-Q2 |
| AEGIS FINANCIAL CORP | 308,927 | $204K | 0.5% | 2026-Q2 |
| MARSHALL WACE, LLP added | 287,868 | $190K | 0.5% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 219,432 | $145K | 0.4% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 218,958 | $145K | 0.4% | 2026-Q2 |
| STATE STREET CORP trimmed | 215,631 | $142K | 0.3% | 2026-Q2 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC trimmed | 204,636 | $135K | 0.3% | 2026-Q2 |
| Squarepoint Ops LLC added | 161,818 | $107K | 0.3% | 2026-Q2 |
| Cerity Partners LLC | 150,080 | $99K | 0.2% | 2026-Q2 |
| UBS Group AG trimmed | 150,027 | $99K | 0.2% | 2026-Q2 |
| Merrion Investment Management Co, LLC | 150,000 | $99K | 0.2% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 118,044 | $78K | 0.2% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 111,221 | $73K | 0.2% | 2026-Q2 |
| Empowered Funds, LLC trimmed | 101,736 | $67K | 0.2% | 2026-Q2 |
| Jain Global LLC added | 74,048 | $49K | 0.1% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC added | 62,511 | $41K | 0.1% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL | 56,485 | $37K | 0.1% | 2026-Q2 |
| SHUFRO ROSE & CO LLC | 54,500 | $36K | 0.1% | 2026-Q2 |
| Engineers Gate Manager LP trimmed | 43,082 | $28K | 0.1% | 2026-Q2 |
| XTX Topco Ltd trimmed | 42,391 | $28K | 0.1% | 2026-Q2 |
| R Squared Ltd added | 41,177 | $27K | 0.1% | 2026-Q2 |
| LRI Investments, LLC new | 37,000 | $24K | 0.1% | 2026-Q2 |
| Net Worth Advisory Group trimmed | 30,381 | $20K | 0.0% | 2026-Q2 |
| READYSTATE ASSET MANAGEMENT LP trimmed | 30,000 | $20K | 0.0% | 2026-Q2 |
| KESTRA PRIVATE WEALTH SERVICES, LLC added | 29,000 | $19K | 0.0% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 23,005 | $16K | 0.0% | 2026-Q2 |
| CITADEL ADVISORS LLC trimmed | 23,705 | $16K | 0.0% | 2026-Q2 |
| OPPENHEIMER & CO INC trimmed | 19,259 | $13K | 0.0% | 2026-Q2 |
| Daytona Street Capital LLC | 20,000 | $13K | 0.0% | 2026-Q2 |
| IMC-Chicago, LLC new | 18,432 | $12K | 0.0% | 2026-Q2 |
| LPL Financial LLC | 16,558 | $11K | 0.0% | 2026-Q2 |
| GROUP ONE TRADING LLC added | 14,879 | $10K | 0.0% | 2026-Q2 |
| Vanguard Global Advisers, LLC | 14,847 | $10K | 0.0% | 2026-Q2 |
| Point72 Asset Management, L.P. trimmed | 12,867 | $8K | 0.0% | 2026-Q2 |
| JMN Financial LLC new | 10,841 | $7K | 0.0% | 2026-Q2 |
| Joel Isaacson & Co., LLC | 10,000 | $7K | 0.0% | 2026-Q2 |
| Arax Advisory Partners added | 9,400 | $6K | 0.0% | 2026-Q2 |
| MORGAN STANLEY added | 8,255 | $5K | 0.0% | 2026-Q2 |
| NATIONAL BANK OF CANADA /FI/ added | 5,700 | $4K | 0.0% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 2,612 | $2K | 0.0% | 2026-Q2 |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 2,549 | $2K | 0.0% | 2026-Q2 |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 1,900 | $1K | 0.0% | 2026-Q2 |
| TD Waterhouse Canada Inc. trimmed | 1,700 | $1K | 0.0% | 2026-Q2 |
| OSAIC HOLDINGS, INC. added | 764 | $504 | 0.0% | 2026-Q2 |
| Olistico Wealth, LLC | 755 | $498 | 0.0% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS | 447 | $295 | 0.0% | 2026-Q2 |
| SBI Securities Co., Ltd. added | 435 | $287 | 0.0% | 2026-Q2 |
| Farther Finance Advisors, LLC | 44 | $29 | 0.0% | 2026-Q2 |
| Intesa Sanpaolo S.p.A. | 14 | $9 | 0.0% | 2026-Q2 |
| Caitong International Asset Management Co., Ltd | 1 | $1 | 0.0% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC trimmed | 1,012,593 | $1M | 3.5% | 2026-Q1 stale (1 quarter behind) |
| Solas Capital Management, LLC trimmed | 790,338 | $1M | 2.8% | 2026-Q1 stale (1 quarter behind) |
| GSA CAPITAL PARTNERS LLP added | 505,490 | $718K | 1.8% | 2026-Q1 stale (1 quarter behind) |
| Graham Capital Management, L.P. added | 135,587 | $193K | 0.5% | 2026-Q1 stale (1 quarter behind) |
| GOLDMAN SACHS GROUP INC trimmed | 61,181 | $87K | 0.2% | 2026-Q1 stale (1 quarter behind) |
| Assenagon Asset Management S.A. trimmed | 58,894 | $84K | 0.2% | 2026-Q1 stale (1 quarter behind) |
| Susquehanna Portfolio Strategies, LLC trimmed | 48,961 | $70K | 0.2% | 2026-Q1 stale (1 quarter behind) |
| Invesco Ltd. added | 39,288 | $56K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| Diameter Capital Partners LP new | 1,100,397 | $2M | 5.4% | 2025-Q4 stale (2 quarters behind) |
| JANE STREET GROUP, LLC added | 125,171 | $248K | 0.6% | 2025-Q4 stale (2 quarters behind) |
| Qube Research & Technologies Ltd trimmed | 51,970 | $103K | 0.3% | 2025-Q4 stale (2 quarters behind) |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC trimmed | 42,610 | $96K | 0.2% | 2025-Q4 stale (2 quarters behind) |
| Quadrature Capital Ltd added | 37,009 | $73K | 0.2% | 2025-Q4 stale (2 quarters behind) |
| ACADIAN ASSET MANAGEMENT LLC | 26,868 | $52K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| Jump Financial, LLC trimmed | 153,666 | $443K | 1.1% | 2025-Q3 stale (3 quarters behind) |
| Cubist Systematic Strategies, LLC trimmed | 101,203 | $291K | 0.7% | 2025-Q3 stale (3 quarters behind) |
| PDT Partners, LLC trimmed | 99,982 | $288K | 0.7% | 2025-Q3 stale (3 quarters behind) |
| WEALTHEDGE INVESTMENT ADVISORS, LLC new | 71,584 | $206K | 0.5% | 2025-Q3 stale (3 quarters behind) |
| GAMCO INVESTORS, INC. ET AL trimmed | 68,795 | $198K | 0.5% | 2025-Q3 stale (3 quarters behind) |
| Brevan Howard Capital Management LP added | 59,007 | $170K | 0.4% | 2025-Q3 stale (3 quarters behind) |
| ALGERT GLOBAL LLC | 45,180 | $130K | 0.3% | 2025-Q3 stale (3 quarters behind) |
| HSBC HOLDINGS PLC | 22,424 | $64K | 0.2% | 2025-Q3 stale (3 quarters behind) |
| Boundary Creek Advisors LP trimmed | 2,333,375 | $8M | 20.1% | 2025-Q2 stale (4 quarters behind) |
| Gates Capital Management, Inc. trimmed | 1,003,824 | $4M | 8.6% | 2025-Q2 stale (4 quarters behind) |
| GABELLI FUNDS LLC new | 515,429 | $2M | 4.4% | 2025-Q2 stale (4 quarters behind) |
| AQR CAPITAL MANAGEMENT LLC added | 251,694 | $881K | 2.2% | 2025-Q2 stale (4 quarters behind) |
| TWO SIGMA INVESTMENTS, LP trimmed | 136,913 | $479K | 1.2% | 2025-Q2 stale (4 quarters behind) |
| Trexquant Investment LP trimmed | 120,274 | $421K | 1.0% | 2025-Q2 stale (4 quarters behind) |
| EntryPoint Capital, LLC added | 76,035 | $266K | 0.7% | 2025-Q2 stale (4 quarters behind) |
| State of Wyoming added | 53,656 | $188K | 0.5% | 2025-Q2 stale (4 quarters behind) |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | 52,270 | $183K | 0.4% | 2025-Q2 stale (4 quarters behind) |
| Point72 Asia (Singapore) Pte. Ltd. added | 26,764 | $94K | 0.2% | 2025-Q2 stale (4 quarters behind) |
| IEQ CAPITAL, LLC new | 24,302 | $85K | 0.2% | 2025-Q2 stale (4 quarters behind) |
| Pictet Asset Management Holding SA trimmed | 23,717 | $83K | 0.2% | 2025-Q2 stale (4 quarters behind) |
| Corton Capital Inc. added | 19,459 | $68K | 0.2% | 2025-Q2 stale (4 quarters behind) |
| TWO SIGMA SECURITIES, LLC trimmed | 15,749 | $55K | 0.1% | 2025-Q2 stale (4 quarters behind) |
1 parent filing withheld from the table above, and from the coverage figures, to avoid listing one book twice: VANGUARD GROUP INC (last filed 2025-Q4, 828,440 shares) reconciles to its 4 current affiliates (828,183 shares) — 0.031% apart.
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.