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Last updated : 27/04/2026 - 13h51
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Constellation Energy Stock: Shares Fall 4.5% Despite Completion of Calpine Acquisition

Constellation Energy's stock ended the session on January 7 with a sharp decline, dropping 4.5% to $338.63. This downward movement occurred in an otherwise bullish market, with the S&P 500 gaining 0.36% during the same period. The day was marked by the announcement of the completion of a significant transaction for the group.


Constellation Energy Stock: Shares Fall 4.5% Despite Completion of Calpine Acquisition

Market Performance on Announcement Day

The electricity producer's stock recorded a 4.5% decrease to close at $338.63, while the benchmark S&P 500 index rose by 0.36% to 6,740.28 points. Trading involved 2.8 million shares, representing 0.9% of the market capitalization, indicating a moderate level of activity that reflects a capital rotation without particular intensity. Over the past week, the stock has seen a decline of 4.14%, marking a correction after several months of gains. In the longer term, the performance remains strong with an increase of 32.47% over the past twelve months, significantly outperforming the S&P 500, which recorded an 18.33% rise over the same period. This divergence illustrates the sustained market interest in the decarbonized energy sector, despite valuation adjustments observed at the beginning of the year.

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