The major U.S. stock indices have erased much of their earlier gains, with the S&P 500 now slipping into negative territory as late-session selling accelerates. Earlier in the day, optimism pushed all three major averages sharply higher, but that enthusiasm has faded as investors take profits and selling broadens.The S&P 500, which was up as much as 55.53 points at its session high, is now down 14 points (-0.19%). The NASDAQ Composite, after rallying 295.36 points at its peak, has nearly erased the entire advance, with its intraday low showing a gain of just 1.75 points before a modest bounce. Meanwhile, the Dow Jones Industrial Average has experienced an even more dramatic reversal, swinging from a gain of 266 points to a loss of as much as 364 points before trimming some of those declines.The sharp reversal highlights a shift in sentiment as buyers who drove the morning rally have stepped aside, allowing sellers to regain control into the close. Below are some of the day's biggest losers:Whirlpool fell $1.76 or -4.60% to $36.48Chipotle Mexican Grill fell $1.33 or -3.85% to $33.12ARK Genomic Revolution fell $1.45 or -3.62% to $38.42First Solar fell $7.30 or -3.44% to $204.69Oracle fell $4.12 or -3.26% to $122.29Albemarle fell $3.82 or -3.16% to $116.96Dell Technologies fell $12.39 or -3.12% to $383.95Worthington Industries fell $1.58 or -2.83% to $54.19Tesla fell $10.82 or -2.84% to $370.02Moderna fell $1.74 or -2.82% to $60.08Alcoa fell $1.22 or -2.77% to $42.76Emerson fell $3.84 or -2.75% to $135.70Deere & Company fell $14.38 or -2.41% to $582.86Biogen fell $4.87 or -2.37% to $201.12Shake Shack fell $1.33 or -2.29% to $56.67Eli Lilly fell $26.47 or -2.24% to $1,152.64Merck & Co. fell $2.81 or -2.21% to $124.68Invesco Solar ETF fell $1.18 or -2.19% to $52.72Netflix fell $1.49 or -2.15% to $67.46Morgan Stanley fell $4.58 or -2.13% to $210.92Boeing fell $4.49 or -2.10% to $209.54Lennar fell $1.68 or -2.00% to $82.21Some of the chips and AI related names are still positive on the day but off their session highs:Lumentum Holdings rose $39.88 or 5.44% to $772.70Credo Technology Group rose $10.06 or 4.96% to $212.74Coherent rose $9.64 or 3.47% to $287.25Marvell Technology rose $6.50 or 3.44% to $195.18Intel rose $2.64 or 2.78% to $97.69Advanced Micro Devices (AMD) rose $12.60 or 2.54% to $508.36Sandisk rose $32.03 or 2.36% to $1,386.85Nebius Group rose $4.19 or 2.36% to $181.90Monolithic Power Systems rose $25.03 or 1.91% to $1,337.03Broadcom rose $7.53 or 2.03% to $378.36The markets cannot keep the momentum going to the upside. Also there seems to be more of a rotation every day. If some sector are doing well, it's at the expense of other sectors which do just as poorly if not worse. This article was written by Greg Michalowski at investinglive.com.