New Mountain Capital, L.L.C. logo

New Mountain Capital, L.L.C.

Private Equity

New Mountain Capital, L.L.C. is a Private Equity based in New York, NY led by Steven Bruce Klinsky, reporting $42.9B in AUM as of Q3 2025 with 100% Basic Materials concentration, with only 1 position, and 100% allocation to AVTR.

CEOSteven Bruce Klinsky
Portfolio Value
$174.7M
Positions
1
Top Holding
AVTR at 100%
Last Reported
Q3 2025
Address1633 Broadway, 48th Fl., New York, NY, 10019, United States

Top Holdings

Largest long holdings in New Mountain Capital, L.L.C.'s portfolio (100% of total portfolio)

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HoldingSectorPositionWeightTradedOwnership
1
Avantor logo
Chemicals - Specialty
Basic Materials
$174.7M
100.00%
2.05%
14.0M shares

Analytics

Portfolio insights and performance metrics for New Mountain Capital, L.L.C.

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Sector Allocation

Basic Materials: 100.00%Basic Materials
Basic Materials
100.00%

Market Cap Distribution

Mid Cap ($2B - $10B): 100.00%Mid Cap ($2B - $10B)
Mid Cap ($2B - $10B)
100.00%

Portfolio Concentration

Top 10 Holdings %
100.0%
Top 20 Holdings %
100.0%
Top 50 Holdings %
100.0%
Top 100 Holdings %
100.0%

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