Stocks/Funds/CIK 1407718

New Mountain Capital, L.L.C.

long-term holderconcentrated
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1407718
Assets
$110M
-51.6% YoY
Holdings
1
Lifetime alpha vs market
-35.94% annual
Average hold time
3.8 yr
median 3.8 yr

Quarterly history

Cum return -60% vs S&P +91% · α -151% lifetimeAUM $110M · peak $6.3BFlow $0M (+0%)2022-092023-062024-032024-122025-092026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
+0.00%
trims when stocks drop
when a holding falls −10%+
Middle response
+0.00%
baseline attrition
Rally response
-9.65%
trims into rallies
when a holding rises +10%+

Top positions · 1

Ticker$ value% portYoYHold time
AVTRAvantor, Inc.$110M100.0%-51.6%3.8 yr

Portfolio composition (YoY)

Industry mix
Medical - Instruments & Supplies100.0%+0.0pp$110M
Country
US100.0%+0.0pp
Top 5: 100.0% · Top 10: 100.0% · Top 25: 100.0%

Winners

TickerPrev $PnLYoY %
AVTR$227M-0.12B-51.6%

Losers

TickerPrev $PnLYoY %
AVTR$227M-0.12B-51.6%

Top buys this quarter · 0

No buys this quarter

Top sells this quarter · 0

No sells this quarter

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$110M1-51.63%+17.59%-69.23%+0.00B
2025-12-31$160M1-45.61%+17.72%-63.33%+0.00B
2025-09-30$175M1-51.76%+17.52%-69.28%+0.00B
2025-06-30$188M1-36.51%+14.94%-51.45%-0.00B
2025-03-31$227M1-36.61%+8.30%-44.91%+0.00B
2024-12-31$295M1-8.80%+24.89%-33.69%-1.10B
2024-09-30$1.71B2+25.12%+36.04%-10.91%-0.11B
2024-06-30$1.49B2-3.97%+24.49%-28.46%+0.18B
2024-03-31$1.57B2+13.79%+29.62%-15.83%-0.05B
2023-12-31$1.47B3+7.19%+26.18%-18.99%-0.59B
2023-09-30$1.84B3+5.90%+21.57%-15.66%-0.21B
2023-06-30$2.19B3-1.76%+8.68%-10.44%+0.35B
2023-03-31$1.87B3+4.26%+7.46%-3.20%-3.82B
2022-12-31$5.46B4+10.40%+7.56%+2.84%-1.51B
2022-09-30$6.32B4