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What you need to know today All-time high, again Major U.S. indexes rose on Thursday, with the S&P 500 notching a fresh closing high .

Micron jumped 14.73% on better-than-expected guidance. Europe's Stoxx 600 index advanced 1.

25% as luxury shares popped and regained losses from earlier in the week. Meanwhile, the Swiss National Bank cut rates by a quarter point to 1%. Why are Treasury yields rising? Treasury yields tend to move in tandem with interest rates.

Both, broadly speaking, indicate the borrowing costs of money. When the U.S.

Federal Reserve cut interest rates last week, it's not unreasonable to expect Treasury yields to dip. Instead, they've been climbing. CNBC's Jeff Cox breaks down what's happening .

'No current plans' for Altman equity At an all-hands meeting on Thursday, OpenAI CEO Sam Altman denied he received a "giant equity stake" in the company, and said "there are no current plans" for him to receive one, according to a source who asked to remain unnamed. That said, OpenAI Chairman Bret Taylor told CNBC the board "has had discussions" on compensating Altman with equity. CFOs predi.