Who owns New Mountain Finance Corporation (NMFC)
Which tracked institutional funds hold NMFC, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See NMFC 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
The tracked-fund tape on NMFC is one-sided between 2025-Q4 and 2026-Q1: 10 added or opened and 45 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
NMFC’s largest tracked holder by dollar value, LSV ASSET MANAGEMENT, sizes it at 0.1% 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 NMFC 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 153 tracked filers holding NMFC, 58 increased or opened the position and 95 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 NMFC 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 2
- Cerberus Capital Management, L.P.$1M
- BALYASNY ASSET MANAGEMENT L.P.$1M
Full exits 6
- RIVERNORTH CAPITAL MANAGEMENT, LLC$12M
- ARES MANAGEMENT LLC$6M
- Truffle Hound Capital, LLC$5M
- FRANKLIN RESOURCES INC$4M
- TWO SIGMA ADVISERS, LP$3M
- Quadrature Capital Ltd$521K
Largest adds
- Invesco Ltd.$6M
- Russell Investments Group, Ltd.$4M
- UBS Group AG$2M
- D. E. Shaw & Co., Inc.$1M
- TWO SIGMA INVESTMENTS, LP$1M
- XTX Topco Ltd$543K
Largest trims
- Union Bancaire Privee, UBP SA$32M
- JPMORGAN CHASE & CO$18M
- VAN ECK ASSOCIATES CORP$8M
- Closed-End Fund Advisors, Inc.$5M
- MORGAN STANLEY$5M
- LSV ASSET MANAGEMENT$4M
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 |
|---|---|---|---|---|
| LSV ASSET MANAGEMENT added | 3,022,118 | $23M | 8.8% | 2026-Q1 |
| Invesco Ltd. added | 2,139,677 | $17M | 6.2% | 2026-Q1 |
| UBS Group AG added | 2,091,276 | $16M | 6.1% | 2026-Q1 |
| VAN ECK ASSOCIATES CORP trimmed | 1,796,175 | $14M | 5.2% | 2026-Q1 |
| DIMENSION CAPITAL MANAGEMENT LLC added | 1,156,541 | $9M | 3.4% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 938,679 | $7M | 2.7% | 2026-Q1 |
| Cerity Partners LLC trimmed | 872,844 | $7M | 2.5% | 2026-Q1 |
| Corient Private Wealth LLC added | 871,296 | $7M | 2.5% | 2026-Q1 |
| National Philanthropic Trust | 852,921 | $7M | 2.5% | 2026-Q1 |
| Muzinich & Co., Inc. trimmed | 848,918 | $7M | 2.5% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 836,457 | $6M | 2.4% | 2026-Q1 |
| Legal & General Group Plc added | 785,496 | $6M | 2.3% | 2026-Q1 |
| MORGAN STANLEY trimmed | 729,938 | $6M | 2.1% | 2026-Q1 |
| Sumitomo Mitsui Trust Group, Inc. trimmed | 688,578 | $5M | 2.0% | 2026-Q1 |
| Pathstone Holdings, LLC added | 661,219 | $5M | 1.9% | 2026-Q1 |
| Hennion & Walsh Asset Management, Inc. trimmed | 513,085 | $4M | 1.5% | 2026-Q1 |
| OSAIC HOLDINGS, INC. added | 450,470 | $3M | 1.3% | 2026-Q1 |
| HighTower Advisors, LLC trimmed | 423,732 | $3M | 1.2% | 2026-Q1 |
| BlackRock, Inc. trimmed | 352,242 | $3M | 1.0% | 2026-Q1 |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 344,000 | $3M | 1.0% | 2026-Q1 |
| Focus Partners Wealth added | 334,785 | $3M | 1.0% | 2026-Q1 |
| D. E. Shaw & Co., Inc. added | 333,941 | $3M | 1.0% | 2026-Q1 |
| Tranquility Partners, LLC added | 316,752 | $2M | 0.9% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 314,507 | $2M | 0.9% | 2026-Q1 |
| XTX Topco Ltd added | 292,695 | $2M | 0.9% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 291,491 | $2M | 0.9% | 2026-Q1 |
| CONFLUENCE INVESTMENT MANAGEMENT LLC trimmed | 277,571 | $2M | 0.8% | 2026-Q1 |
| TRANSCEND CAPITAL ADVISORS, LLC trimmed | 271,158 | $2M | 0.8% | 2026-Q1 |
| GraniteShares Advisors LLC trimmed | 263,627 | $2M | 0.8% | 2026-Q1 |
| BI Asset Management Fondsmaeglerselskab A/S added | 243,132 | $2M | 0.7% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 194,097 | $2M | 0.6% | 2026-Q1 |
| Advisors Asset Management, Inc. trimmed | 173,665 | $1M | 0.5% | 2026-Q1 |
| Mill Creek Capital Advisors, LLC | 149,000 | $1M | 0.4% | 2026-Q1 |
| Cerberus Capital Management, L.P. new | 145,000 | $1M | 0.4% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 136,058 | $1M | 0.4% | 2026-Q1 |
| Naviter Wealth, LLC trimmed | 131,722 | $1M | 0.4% | 2026-Q1 |
| STATE STREET CORP trimmed | 127,191 | $987K | 0.4% | 2026-Q1 |
| VARCOV Co. added | 125,077 | $971K | 0.4% | 2026-Q1 |
| LPL Financial LLC trimmed | 124,074 | $963K | 0.4% | 2026-Q1 |
| Trexquant Investment LP trimmed | 114,972 | $892K | 0.3% | 2026-Q1 |
| NEUBERGER BERMAN GROUP LLC trimmed | 109,540 | $850K | 0.3% | 2026-Q1 |
| CANADA LIFE ASSURANCE Co trimmed | 98,987 | $771K | 0.3% | 2026-Q1 |
| HB Wealth Management, LLC trimmed | 98,997 | $768K | 0.3% | 2026-Q1 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 95,300 | $740K | 0.3% | 2026-Q1 |
| Virtus Investment Advisers, LLC added | 89,471 | $694K | 0.3% | 2026-Q1 |
| Cambridge Investment Research Advisors, Inc. trimmed | 87,152 | $676K | 0.3% | 2026-Q1 |
| Farther Finance Advisors, LLC added | 83,500 | $643K | 0.2% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 81,366 | $631K | 0.2% | 2026-Q1 |
| DENALI ADVISORS LLC trimmed | 77,885 | $604K | 0.2% | 2026-Q1 |
| Campbell & CO Investment Adviser LLC trimmed | 72,031 | $559K | 0.2% | 2026-Q1 |
| ExodusPoint Capital Management, LP added | 71,461 | $555K | 0.2% | 2026-Q1 |
| Janney Montgomery Scott LLC trimmed | 71,170 | $552K | 0.2% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 69,603 | $530K | 0.2% | 2026-Q1 |
| COMMONWEALTH EQUITY SERVICES, LLC trimmed | 65,497 | $508K | 0.2% | 2026-Q1 |
| PALISADE CAPITAL MANAGEMENT, LP trimmed | 63,121 | $490K | 0.2% | 2026-Q1 |
| Valeo Financial Advisors, LLC | 59,850 | $464K | 0.2% | 2026-Q1 |
| CAXTON ASSOCIATES LLP | 58,368 | $453K | 0.2% | 2026-Q1 |
| Mutual Advisors, LLC added | 57,709 | $448K | 0.2% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 53,350 | $414K | 0.2% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC | 53,270 | $413K | 0.2% | 2026-Q1 |
| Spire Wealth Management | 45,600 | $354K | 0.1% | 2026-Q1 |
| Almitas Capital LLC | 45,000 | $349K | 0.1% | 2026-Q1 |
| Cetera Investment Advisers added | 44,126 | $342K | 0.1% | 2026-Q1 |
| Nordwand Advisors, LLC | 41,800 | $324K | 0.1% | 2026-Q1 |
| Colter Lewis Investment Partners LLC added | 39,103 | $303K | 0.1% | 2026-Q1 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC added | 1,338,277 | $12M | 4.6% | 2025-Q4 stale |
| ARES MANAGEMENT LLC added | 602,575 | $6M | 2.1% | 2025-Q4 stale |
| Truffle Hound Capital, LLC new | 550,000 | $5M | 1.9% | 2025-Q4 stale |
| Allspring Global Investments Holdings, LLC trimmed | 407,199 | $5M | 1.7% | 2025-Q1 stale |
| FRANKLIN RESOURCES INC trimmed | 455,022 | $4M | 1.6% | 2025-Q4 stale |
| TWO SIGMA ADVISERS, LP trimmed | 275,000 | $3M | 1.0% | 2025-Q4 stale |
| Kovitz Investment Group Partners, LLC added | 238,543 | $2M | 0.9% | 2025-Q3 stale |
| PREVAIL INNOVATIVE WEALTH ADVISORS, LLC trimmed | 182,461 | $2M | 0.7% | 2025-Q2 stale |
| First National Trust Co added | 169,359 | $2M | 0.7% | 2025-Q1 stale |
| Rockingstone Advisors LLC trimmed | 186,932 | $2M | 0.7% | 2025-Q3 stale |
| Midwest Professional Planners, LTD. added | 150,065 | $2M | 0.6% | 2025-Q2 stale |
| Merit Financial Group, LLC trimmed | 143,499 | $2M | 0.6% | 2025-Q2 stale |
| Alberta Investment Management Corp | 121,800 | $1M | 0.5% | 2025-Q1 stale |
| Arlington Capital Management, Inc. added | 127,521 | $1M | 0.5% | 2025-Q3 stale |
| Clearstead Advisors, LLC trimmed | 98,674 | $1M | 0.4% | 2025-Q1 stale |
| Dorsey & Whitney Trust CO LLC | 112,410 | $1M | 0.4% | 2025-Q3 stale |
| MACQUARIE GROUP LTD | 95,300 | $919K | 0.3% | 2025-Q3 stale |
| HRT FINANCIAL LP added | 82,335 | $868K | 0.3% | 2025-Q2 stale |
| Bramshill Investments, LLC added | 77,125 | $851K | 0.3% | 2025-Q1 stale |
| Everstar Asset Management, LLC added | 82,310 | $793K | 0.3% | 2025-Q3 stale |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 69,953 | $772K | 0.3% | 2025-Q1 stale |
| Epoch Investment Partners, Inc. | 73,315 | $707K | 0.3% | 2025-Q3 stale |
| ACADIAN ASSET MANAGEMENT LLC trimmed | 71,170 | $685K | 0.3% | 2025-Q3 stale |
| Quadrature Capital Ltd added | 56,578 | $521K | 0.2% | 2025-Q4 stale |
| Privium Fund Management (UK) Ltd new | 45,500 | $499K | 0.2% | 2025-Q1 stale |
| WFA Asset Management Corp added | 40,706 | $488K | 0.2% | 2025-Q3 stale |
| Inspire Investing, LLC added | 50,906 | $469K | 0.2% | 2025-Q4 stale |
| Arax Advisory Partners added | 44,643 | $411K | 0.2% | 2025-Q4 stale |
| Key Client Fiduciary Advisors, LLC added | 40,611 | $391K | 0.1% | 2025-Q3 stale |
| Cubist Systematic Strategies, LLC added | 36,643 | $387K | 0.1% | 2025-Q2 stale |
| Lansforsakringar Fondforvaltning AB (publ) new | 32,764 | $361K | 0.1% | 2025-Q1 stale |
| Quantbot Technologies LP added | 37,261 | $343K | 0.1% | 2025-Q4 stale |
| FOURPATH CAPITAL MANAGEMENT, LLC | 34,299 | $316K | 0.1% | 2025-Q4 stale |
| MARSHALL WACE, LLP trimmed | 32,273 | $311K | 0.1% | 2025-Q3 stale |
| LexAurum Advisors, LLC new | 28,500 | $275K | 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.