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Super Investors New Mountain Capital, L.L.C.
NM

New Mountain Capital, L.L.C.

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$139M
Positions
1
Quarter ended
June 30, 2026
Filed
August 14, 2026

Reported portfolio value by quarter (16 quarters reported)

$6.32B $110M
Q3 22 Q3 23 Q3 24 Q3 25 Q2 26

$6.32B in Q3 2022 → $139M now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
Avantor Inc 100.0% Unchanged 14,000,000 $139M

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 14, 2026

No position changes this quarter.

Q1 2026

quarter ended March 31, 2026 · filed May 13, 2026

No position changes this quarter.

Q4 2025

quarter ended December 31, 2025 · filed February 17, 2026

No position changes this quarter.

Q3 2025

quarter ended September 30, 2025 · filed November 14, 2025

No position changes this quarter.

Q2 2025

quarter ended June 30, 2025 · filed August 14, 2025

No position changes this quarter.

Q1 2025

quarter ended March 31, 2025 · filed May 15, 2025

No position changes this quarter.

Q4 2024

quarter ended December 31, 2024 · filed February 13, 2025

Company Action Shares changed Value of change % of portfolio
RR R1 Rcm Inc Exited −94,981,636 −$1.35B —

Q3 2024

quarter ended September 30, 2024 · filed November 14, 2024

No position changes this quarter.

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