Stocks/Funds/CIK 1707921

ECP ControlCo, LLC

long-term holderconcentrated
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1707921
Assets
$6.34B
+3070.3% YoY
Holdings
4
Lifetime alpha vs market
-21.57% annual
Average hold time
3.4 yr
median 4.0 yr

Quarterly history

Cum return -42% vs S&P +52% · α -95% lifetimeAUM $6.3B · peak $6.3BFlow $6.2B (+3014%)2017-092018-122020-032021-062022-092023-122025-032026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
-0.46%
trims when stocks drop
when a holding falls −10%+
Middle response
+1.25%
steady accumulation
Rally response
-2.33%
trims into rallies
when a holding rises +10%+

Top positions · 4

Ticker$ value% portYoYHold time
CEGConstellation Energy Cor$6.16B97.1%+39.2%0.3 yr
PCGPG&E Corporation$125M2.0%+2.9%5.3 yr
SHENShenandoah Telecommunica$53M0.8%+23.9%4.3 yr
CLNEClean Energy Fuels Corp.$6M0.1%+60.0%3.8 yr

Portfolio composition (YoY)

Industry mix
Renewable Utilities97.1%$6.16B
Regulated Electric2.0%-59.2pp$125M
Telecommunications Services0.8%-14.6pp$53M
Oil & Gas Refining & Marketing0.1%-1.9pp$6M
Country
US100.0%+0.0pp
Top 5: 100.0% · Top 10: 100.0% · Top 25: 100.0%

Winners

TickerPrev $PnLYoY %
SHEN$31M+0.01B23.9%
PCG$122M+0.00B2.9%
CLNE$4M+0.00B60.0%

Losers

TickerPrev $PnLYoY %

Top buys this quarter · 1

CEG Constellation Energy Corporatinew+$6.16B

Top sells this quarter · 1

XIFR XPLR Infrastructure, LPexit$48M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$6.34B4-22.26%+17.59%-39.85%+6.17B
2025-12-31$205M4-14.65%+17.72%-32.37%+0.00B
2025-09-30$205M4-4.74%+17.52%-22.26%+0.01B
2025-06-30$178M4-16.91%+14.94%-31.86%+0.00B
2025-03-31$200M4-15.56%+8.30%-23.86%-0.03B
2024-12-31$260M4-13.35%+24.89%-38.24%-0.11B
2024-09-30$329M6-18.41%+36.04%-54.44%+0.02B
2024-06-30$324M7-20.17%+24.49%-44.66%+0.00B
2024-03-31$363M7-7.43%+29.62%-37.05%-0.06B
2023-12-31$461M8+6.34%+26.18%-19.84%+0.00B
2023-09-30$436M9+15.31%+21.57%-6.26%-0.03B
2023-06-30$496M9+29.83%+19.42%+10.41%-0.02B
2023-03-31$499M8-5.26%-7.82%+2.55%-0.02B
2022-12-31$495M7+13.72%+7.56%+6.16%-0.07B
2022-09-30$497M9+5.89%-4.93%+10.82%+0.02B
2022-06-30$454M8-24.80%-16.11%-8.69%+0.01B