8 institutions reported holding $103.1M of NRG ENERGY INC (NRG1) in SEC 13F filings for 2026-03-31. Largest institutional holders: GROUP ONE TRADING LLC ($69.0M), IMC-Chicago, LLC ($22.3M), SIMPLEX TRADING, LLC ($7.2M), Pacer Advisors, Inc. ($2.2M), HRT FINANCIAL LP ($1.8M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GROUP ONE TRADING LLC | $69.0M | 472,200 | Added |
| 2 | IMC-Chicago, LLC | $22.3M | 152,400 | Trimmed |
| 3 | SIMPLEX TRADING, LLC | $7.2M | 49,500 | Trimmed |
| 4 | Pacer Advisors, Inc. | $2.2M | 2.3M | Trimmed |
| 5 | HRT FINANCIAL LP | $1.8M | 12,400 | New |
| 6 | CenterStar Asset Management, LLC | $511,490 | 3,500 | New |
| 7 | LuminArx Capital Management LP | $101,250 | 50,000 | New |
| 8 | JPMORGAN CHASE & CO | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31