ECP ControlCo, LLC reported 5 positions worth $4.67B for the quarter ended Jun 30, 2026, down 26.4% on the prior quarter. It opened 1 new position, added to 0, trimmed 1 and exited 0. Its largest holding is Constellation Energy Corp at 76.4% of the portfolio.
Reported 13F market value at each quarter end. A change mixes trading with price moves in the positions held.
Dollar value of shares bought and sold each quarter, at that quarter’s price. It counts trading only, not price changes.
How many positions were opened, added to, trimmed or closed each quarter.
Share of reported value in each sector at every quarter end.
| Holding | Change | Trade Value | Weight |
|---|---|---|---|
| TLN Talen Energy Corp | +2.40M | $922.22M | 19.75% |
| Holding | Change | Trade Value | Weight |
|---|---|---|---|
| CEG Constellation Energy Corp | -7.67M -34.8% | $1.91B | 76.45% |
| Holding | Shares | Trade Value | Weight |
|---|---|---|---|
| TLN Talen Energy Corp | +2.40M | $922.22M | 19.75% |
No positions were closed this quarter.
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | CEG Constellation Energy Corp | Utilities | 14.37M | $3.57B | 76.45% | -7.67M | -34.8% | Reduced | 3.99% |
| 2 | TLN Talen Energy Corp | Utilities | 2.40M | $922.22M | 19.75% | +2.40M | – | New | 5.01% |
| 3 | PCG PG&E Corp | Utilities | 7.12M | $119.84M | 2.57% | 0 | 0.0% | Unchanged | 0.32% |
| 4 | SHEN Shenandoah Telecommunications Co | Communication Services | 3.46M | $52.13M | 1.12% | 0 | 0.0% | Unchanged | 6.2% |
| 5 | CLNE Clean Energy Fuels Corp. | Energy | 2.59M | $5.32M | 0.114% | 0 | 0.0% | Unchanged | 1.18% |
Tip. Select a row to see that position’s full history at ECP ControlCo.
As of its Q2 2026 13F filing, ECP ControlCo, LLC’s five largest positions were Constellation Energy Corp (CEG) at 76.4%, Talen Energy Corp (TLN) at 19.8%, PG&E Corp (PCG) at 2.6%, Shenandoah Telecommunications Co (SHEN) at 1.1%, Clean Energy Fuels Corp. (CLNE) at 0.1% of the reported portfolio.
ECP ControlCo, LLC reported a 13F portfolio worth $4.67B across 5 positions for Q2 2026. That is down 26.4% from the previous quarter.
Its largest purchases by value were Talen Energy Corp ($922.22M). It opened 1 new positions.
Its largest sales by value were Constellation Energy Corp ($1.91B). It exited 0 positions entirely.
From the Form 13F-HR reports ECP ControlCo, LLC files with the SEC each quarter, within 45 days of quarter end. A 13F lists long positions in US-listed equities and options; it excludes short positions, cash, bonds and most non-US holdings.
13F data reflects long positions in US-listed equities and options as reported to the SEC up to 45 days after quarter end. It excludes short positions, cash, bonds and most non-US securities, so it is not a complete picture of a manager’s assets.