** Western Digital WDC.O and Seagate Technology Holdings STX.O rallying on Thur and on track to be the S&P 500's .SPX top performers in 2025, as the buildout of AI infrastructure fuels massive demand for their hard drives and other data storage devices
** Both cos' shares are climbing more than 6% after memory chipmaker Micron Technology MU.O issued an outsized profit forecast amid a global shortage of memory chips amid robust demand from AI data centres
** WDC now up 295% YTD, while STX has surged 242% in 2025
** The S&P 500's next biggest 2025 gainers are trading platform Robinhood HOOD.O, up 221%, and MU, up 204%. MU is up >13% on Thur following its qtrly report late on Wed
S&P 500 components so far in 2025 https://fingfx.thomsonreuters.com/gfx/mkt/lbvgmznrxvq/Pasted%20image%201766081657261.png
(Reporting by Noel Randewich)
((noel.randewich@thomsonreuters.com))
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