US stocks weekly: Clawed

S&P 500 .SPX finishes down 0.1% in rocky trading as new AI automation tool by Anthropic's Claude bruises global markets .N

Dow .DJI gains 2.5%, ends above 50,000 for the first time ever, while the Nasdaq Composite .IXIC slides 1.8%

Indeed, traders wondered whether the SPX would see a breakout or fakeout?

And then the Nasdaq Composite saw its technical damage intensify

This as big-cap tech took center stage amid the market's recent risk-off rout; though by Fri, the sector's 200-DMA, and near oversold levels, helped heal some wounds; on Fri, group posted its biggest daily percentage gain since May 12 of last year

U.S. 10-Year Treasury yield US10YT=RR dips back to the 4.21% area, though as long as 4.13%-4.10% continues to hold, is the lid starting to come off this bubbling cauldron? US/

In the end, Consumer Discretionary and Communication Services shredded, while cyclical, defensive plays unharmed

Consumer Discretionary .SPLRCD dives 4.6%. Amazon.com AMZN.O tanks on forecast of massive $200 bln AI capex plans

Communication Services .SPLRCL crumbles 4.4%. Walt Disney DIS.N falls after warning of 'headwinds' among international visitors, and appoints theme parks head Josh D'Amaro as CEO to take reins from Bob Iger

Google parent Alphabet GOOGL.O says its AI capex spending could double in 2026, stock declines >4% on the week

Tech .SPLRCT falters 1.4%. Software stocks sell off as investors point to Anthropic's new AI tools

AMD AMD.O tumbles as quarterly forecast raises concerns on AI momentum

But Semiconductor index .SOX manages to eke out 0.6% gain

Financials .SPSY up 1.5%. Though PayPal PYPL.O plummets after disappointing annual forecast, CEO change

Robinhood HOOD.O, which offers trading in crypto tokens, and crypto exchange operator Coinbase COIN.O slump as bitcoin BTC= hits lowest since Trump's election victory, and then tumbles below $70,000 mark. HOOD retreats 17%, COIN drops 15% on the week

Asset managers including Blackstone BX.N, KKR KKR.N and Ares ARES.N stumble as software carnage deepens

On the bright side, for the week, S&P 500 banks index .SPXBK jumps 6%, KBW regional banking index .KRX vaults 7% to record highs

Healthcare .SPXHC gains 1.9%. DaVita DVA.N surges 29% after upbeat 2026 profit forecast on steady dialysis services demand

Energy .SPNY up 4.3%. After ups and downs, group rallies on Fri to record close, now up seven straight weeks, as oil prices climb on worries over Iran-US talks O/R

Consumer Staples .SPLRCS advance 6%. Walmart WMT.O hits $1 trln market value, joins club dominated by Big Tech giants

PepsiCo PEP.O posts Q4 beat, and will cut prices of Lay's, Doritos brands following consumer backlash, PEP pops 11% on week

Meanwhile, individual investors' shrinking cash stash a concern, though neutral sentiment hits highest in more than a year

SPX performance YTD:

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