Electric and power generation firm Vistra (VST) will join the S&P 500 index before Wednesday’s open, S&P Dow Jones Indices said Friday night. VST stock will replace Pioneer Natural Resources (PXD), which is being acquired by Exxon Mobil (XOM).
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Meanwhile, bitcoin miner Marathon Digital (MARA) will drop down to the S&P SmallCap 600. Heating and AC play AAON (AAON) will move up to the S&P MidCap 400 index.
Vistra stock rose 4.2% Friday night. Shares have skyrocketed nearly 112% so far in 2024, as data centers’ power needs have soared with the AI boom. Vistra reports Q1 earnings on Wednesday morning.
Marathon Digital stock climbed 4.85% late. More funds track the S&P SmallCap 600 than the MidCap 400, so the demotion is bullish for MARA stock.
On the flip side, AAON is getting a promotion, but fewer funds will be obligated to hold it. AAON stock fell about 3%.
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