Stocks posted mixed results Tuesday with the Dow climbing 229 points to 51,308 while tech giants mostly retreated. Four of the five largest S&P 500 companies ended in the red despite the index's modest 0.1% gain, reflecting investor caution amid continued market volatility.

Alphabet's announcement that it will raise $80 billion through equity sales sent a clear message about its AI ambitions. The move comes as cloud rivals Microsoft, Amazon and Oracle faced selling pressure from expectations of surging capital expenditures. Broadcom shares jumped nearly 5% as Google's key chip partner, while Hewlett Packard Enterprise surged 19% on strong server demand projections.

Marvell Technology led the chip rally, soaring 33% after Nvidia CEO Jensen Huang predicted the company would become the next trillion-dollar semiconductor firm. At Computex in Taiwan, Huang emphasized that advanced connectivity solutions are essential for scaling massive AI data centers, directly endorsing Marvell's networking technology focus.

Victoria's Secret delivered the day's most dramatic move, with shares rocketing 47% on strong first-quarter sales and an upgraded forecast. The surge comes as billionaire investor Brett Blundy pressures the retailer through a proxy fight after being denied a board seat. Marvell now trades at just over $250 billion in market capitalization.