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The three major U.S. stock indexes collectively opened higher, Robinhood fell mo

The three major U.S. stock indexes collectively opened higher, with the Dow up 0.18%, the Nasdaq up 0.57% and the S & P 500 up 0.38%. Chip design software stock Synopsys rose more than 4%; Robinhood fell more than 2% after OpenAI denied involvement in Robinhood tokens.