ECP ControlCo, LLC

CIK 0001707921 · SUMMIT, NJ · Quarter end: 2026-06-30 · Filed on: 2026-08-14 · Open the SEC source ↗

ECP ControlCo, LLC reported 5 positions worth $4.67B as of June 30, 2026 (13F filed August 14, 2026). Largest holding: CEG (76.4%).

Portfolio Value (AUM)Total value of the fund's US stock portfolio reported to the SEC.

$4.67B

2026 Q2

Positions

Top-10 ConcentrationHow much of the portfolio sits in the 10 largest holdings. High = concentrated bets.

100.0%

Est. Net Flow (Q)

—

2026 Q2

Positions Changes Mix History BacktestPRO

5 positions shown

#	Symbol	Company	Type	Value ↓	% Port.	Shares	1Y	YTD
▸ 1	CEG	CONSTELLATION ENERGY CORP	SH	$3.57B	76.45%	14,370,227	—	—
▸ 2	TLN	TALEN ENERGY CORP	SH	$922.2M	19.75%	2,399,998	—	—
▸ 3	PCG	PG&E CORP	SH	$119.8M	2.57%	7,124,720	—	—
▸ 4	SHEN	SHENANDOAH TELECOMMUNICATION	SH	$52.1M	1.12%	3,457,105	—	—
▸ 5	CLNE	CLEAN ENERGY FUELS CORP	SH	$5.3M	0.11%	2,594,759	—	—

Read the 2026-Q2 quarterly report · 13F Filing Calendar

Frequently Asked Questions

What stocks does ECP ControlCo, LLC hold as of Q2 2026?

ECP ControlCo, LLC reported 5 positions worth $4.67B in its Q2 2026 13F filing. Largest positions: CEG (76.4%), TLN (19.8%), PCG (2.6%), SHEN (1.1%) and CLNE (0.1%).

What did ECP ControlCo, LLC buy in Q2 2026?

No previous quarter is available yet; the comparison appears with the next filing.

What did ECP ControlCo, LLC sell in Q2 2026?

No previous quarter is available yet.

13F data shows quarter-end positions, is delayed by up to 45 days and covers only long positions in US-listed securities; short positions, most derivatives and non-US assets are not reported.