** S&P 500 .SPX drops 1.4% as artificial intelligence worries reverberate .N

** Dow .DJI loses 1.2%, Nasdaq Composite .IXIC tumbles 2.1%

** S&P 500 comes within striking distance of highs, 7,000 milestone, then retreats again, though tests 100-DMA support on Fri, bounces

** And in the wake of the tech wreck, Nasdaq Composite tries to right the ship

** U.S. 10-Year Treasury yield US10YT=RR sinks to around 4.05% as mild inflation data firms Fed rate-cut bets US/. This has traders still braced for what could be a big move

** A minority of sectors shudder: Financials convulse, while defensive, bond-proxies durable

** Financials .SPSY flop 4.8%. Insurance brokers including Willis Towers Watson WTW.O and Arthur J Gallagher AJG.N slump on AI disruption risks

Brokerages such as Charles Schwab SCHW.N and Raymond James RJF.N fall after wealth management startup Altruist launches AI tax planner.

iShares Broker Dealer & Securities ETF IAI.P down 5%, worst week since early Apr

S&P Global SPGI.N plunges on weak 2026 forecast, drags down peers amid growing fears AI advancements may disrupt software and services industry

For the week, S&P 500 banks index .SPXBK sinks ~7%, KBW regional banking index .KRX slides 3%

** Communication Services .SPLRCL falls 3.5%. Though Live Nation LYV.N jumps >12% with report of DOJ talks to avert trial

** Consumer Discretionary .SPLRCD down 2.1%. But McDonald's MCD.N rises on Thurs after Q4 global sales beat as meal deals, strong promotions pay off

** Tech .SPLRCT sheds 2%. Networking equipment firm Cisco CSCO.O falls as margin miss, memory costs overshadow strong demand

On the flip side, Applied Materials AMAT.O jumps on upbeat forecast as AI demand drives chipmaking tool orders

Semiconductor index .SOX up 1%

** Industrials .SPLRCI edge up 0.6%. Generac GNRC.N surges as data center demand strengthens. GNRC notches 22% weekly gain for best week since early Aug

However, trucking, transport stocks including C.H. Robinson CHRW.O dive as AI jitters ripple

Dow Jones Transports .DJT skid nearly 3%

** Energy .SPNY up 1.7%. Williams Companies WMB.N rises to record high after lifting 2026 profit forecast

Energy companies gain after oil prices rise as tension in Middle East offsets large US crude stocks build O/R

** Materials .SPLRCM rally 3.7%. Though steel, aluminum makers fall on report Trump to roll back some tariffs. Nucor NUE.N down 5%

** Real Estate .SPLRCR ascends 3.9%. Equinix EQIX.O climbs on upbeat 2026 revenue forecast due to robust AI data center demand

In contrast, CBRE Group CBRE.N forecasts annual profit above estimates on AI-fueled leasing and facilities management amid rapid data center expansion, yet stock crumbles 16% on the week as sector also under the grip of AI scare trade

** Utilities .SPLRCU soar 7.1%. Exelon EXC.O gains as profit forecasts exceed expectations on higher electricity rates, power demand

** Meanwhile, individual investor bears leap

** SPX performance YTD:

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(Lance Tupper and Terence Gabriel are Reuters market analysts. The views expressed are their own)

((lance.tupper@tr.com ; terence.gabriel@tr.com))