Stocks/Funds/CIK 1815467

Great Mountain Partners LLC

microcap filerlong-term holderconcentrated
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1815467
Assets
$15M
-92.9% YoY
Holdings
1
Lifetime alpha vs market
-68.31% annual
Average hold time
6.0 yr
median 6.0 yr

Quarterly history

Cum return -98% vs S&P +52% · α -151% lifetimeAUM $15M · peak $1.9BFlow $0M (+0%)2020-062021-062022-062023-062024-062025-062026-03
AUM ($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
-5.31%
baseline attrition
Rally response
-15.49%
trims into rallies
when a holding rises +10%+

Top positions · 1

Ticker$ value% portYoYHold time
NFENew Fortress Energy Inc.$15M100.0%-92.9%6.0 yr

Portfolio composition (YoY)

Industry mix
Regulated Gas100.0%+0.0pp$15M
Country
US100.0%+0.0pp
Top 5: 100.0% · Top 10: 100.0% · Top 25: 100.0%

Winners

TickerPrev $PnLYoY %
NFE$212M-0.20B-92.9%

Losers

TickerPrev $PnLYoY %
NFE$212M-0.20B-92.9%

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$15M1-92.90%+17.59%-110.49%+0.00B
2025-12-31$29M1-92.46%+17.72%-110.18%-0.00B
2025-09-30$56M1-75.69%+17.52%-93.20%+0.00B
2025-06-30$85M1-84.76%+14.94%-99.70%+0.00B
2025-03-31$212M1-72.46%+8.30%-80.76%-0.01B
2024-12-31$404M2-59.25%+24.89%-84.13%-0.55B
2024-09-30$572M2-71.72%+36.04%-107.75%+0.23B
2024-06-30$826M2-16.81%+24.49%-41.30%+0.14B
2024-03-31$954M2+5.23%+29.62%-24.39%+0.07B
2023-12-31$1.08B2-2.98%+26.18%-29.15%+0.01B
2023-09-30$929M2-17.74%+21.57%-39.30%-0.01B
2023-06-30$765M2-26.48%+19.42%-45.90%+0.01B
2023-03-31$824M2-25.40%-7.82%-17.58%-0.02B
2022-12-31$1.13B3-2.13%+7.56%-9.69%-0.33B
2022-09-30$1.50B4+9.72%-4.93%+14.65%-0.01B
2022-06-30$1.37B3-7.35%-16.11%+8.77%+0.09B