CONSTELLATION ENERGY CORP

CEG (Constellation Energy Corporation) Q1 2026 is a full-snapshot quarter: 1,820 holders, $74.0B in institutional value, but every top holder shows 'NEW' with no prior-quarter comparison. BlackRock $6.6B (23.5M shares) -- the largest institutional holder. ECP ControlCo, LLC $6.2B (22.0M shares) is the second-largest position and a notable name: ECP (Energy Capital Partners) is the private-equity firm that executed the $26B leveraged buyout that took CEG private. This NEW position likely represents ECP's retained stake or co-investor structure. Vanguard total $9.8B across two entities: Capital Management $5.6B (20.1M shares) + Portfolio Management $4.2B (15.0M shares). State Street $5.2B (18.8M shares). Capital International Investors $3.2B (11.6M shares). FMR/Fidelity $2.8B (10.2M shares). Morgan Stanley $2.5B (8.9M shares). Geode Capital $2.0B (7.3M shares). Capital Research Global Investors $1.3B (4.8M shares). Coatue Management $1.3B (4.6M shares). Susquehanna International Group (market_maker) $1.3B (4.5M shares). Wells Fargo $1.2B (4.3M shares). Capital World Investors $1.1B (4.0M shares). Bank of New York Mellon $1.0B (3.6M shares). Invesco $1.0B (3.6M shares). Goldman Sachs $960M (3.4M shares). Bank of America $882M (3.2M shares). Northern Trust $865M (3.1M shares). Jane Street Group (market_maker) $825M (3.0M shares). New positions: every top-21 holder is NEW; no sellers in this quarter. Buyers: BlackRock largest at $6.6B, ECP ControlCo $6.2B (notable LBO-linked name), Vanguard total $9.8B. Market makers present: Susquehanna $1.3B, Jane Street $825M. Classified filers in top-20: none active_manager; 2 passive_index (Vanguard x2, Northern Trust, Geode), 4 market_maker (Susquehanna, Jane Street, others). SMART-MONEY READ: CEG Q1 2026 is a SNAPSHOT with neutral directional read. The absence of any prior-quarter change record means we cannot infer rotation. What we CAN say: CEG retains broad institutional ownership from the full spectrum -- BlackRock, Vanguard, active managers (Coatue, Capital Research Global), and notably Susquehanna/Jane Street as significant participants (consistent with their Q1 2026 energy-adjacent market-making activity). The ECP ControlCo $6.2B stance is the single most notable data point -- if this represents an ECP-linked retained stake (post-LBO structure), it signals ongoing institutionalweight aligned with the buyout sponsors rather than pure public-market players. Without change data this cannot be bullish or bearish; this is a neutral informational record.