New Mountain Capital, L.L.C.

In its 13F for Q2 2024 (holdings as of June 30, 2024, filed August 14, 2024), New Mountain Capital, L.L.C. reported 2 stock positions worth $1.5 billion. Its top holding was R1 RCM (RCM) at 80.1% of the portfolio, followed by Avantor (AVTR, 19.9%). Compared with Q1 2024, it added to 1. The biggest buy was R1 RCM (RCM, shares +1%).

Most Recent 13F
Q2 2026
Location
New York, NY
CIK
0001407718
Portfolio Value
$1.5B (Q2 2024)
SEC Filing
0001172661-24-003501 ↗ filed Aug 14, 2024

Holdings Value

0$500.0M$1.0B$1.5B$2.0B Q1 2024: $1.6B Q1 2024 Q2 2024: $1.5B $1.5B Q2 2024 Q3 2024: $1.7B Q3 2024 Q4 2024: $295.0M Q4 2024 Q1 2025: $226.9M Q1 2025 Q2 2025: $188.4M Q2 2025 Q3 2025: $174.7M Q3 2025 Q4 2025: $160.4M Q4 2025 Q1 2026: $109.8M Q1 2026 Q2 2026: $138.6M Q2 2026

Holdings 2 stocks · $1.5B
RCM R1 RCM Inc. 80.08% 94,981,636 $1.2B Add +0.6%
AVTR Avantor Inc. 19.92% 14,000,000 $296.8M No change

Portfolio Sells Q1 2024 → Q2 2024
None this quarter.

Portfolio Buys Q1 2024 → Q2 2024
RCM R1 RCM Inc. Add +0.6% 80.08% +2.82

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 1$138.6MAVTR
Q1 2026 1$109.8MAVTR
Q4 2025 1$160.4MAVTR
Q3 2025 1$174.7MAVTR
Q2 2025 1$188.4MAVTR
Q1 2025 1$226.9MAVTR
Q4 2024 1$295.0MAVTR
Q3 2024 2$1.7BRCM, AVTR
Q2 2024 2$1.5BRCM, AVTR
Q1 2024 2$1.6BRCM, AVTR