** S&P 500 .SPX rises ninth straight week, adds 1.4% amid AI fervor and US-Iran ceasefire bets .N

** Dow .DJI gains 0.9%, tech-heavy Nasdaq Composite .IXIC pops 2.4%

** S&P 500 hits fresh highs as momentum builds, breadth lags

** U.S. 10-Year Treasury yield US10YT=RR tumbles back to 4.44% area as breakout fails, range reasserts

** In the end, just a minority of sectors accelerate: Technology shifts into high gear, while defensive plays and Energy lose traction

** Tech .SPLRCT jumps 4.6%. Dell DELL.N surges after lifting outlook on robust AI server demand. DELL rockets 43% on the week

Micron MU.O soars to record high, memory chip firm joins $1 trln market value club

Semiconductor index .SOX leaps ~5%

Salesforce CRM.N fiscal Q2 rev forecast disappoints on AI disruption fears. Still, CRM notches 6% weekly gain

** Consumer Discretionary .SPLRCD up 1.5%. Best Buy BBY.N rises after upbeat qtrly sales forecast on steady demand for laptops, smartphones

Amazon.com AMZN.O and data analytics firm Snowflake SNOW.N ink $6 bln AWS deal as enterprise AI adoption grows

** Consumer Staples .SPLRCS shed 3.2%. Costco COST.O falls despite fiscal Q3 sales beat as its lower-priced fuel draws more frugal consumers

** Energy .SPNY drops 5.4%. Group tracks oil price decline as Iran state TV says draft US deal would reopen Strait of Hormuz shipping O/R

NYMEX Crude futures CLc1 test key support as geopolitics and charts collide

** Meanwhile, the hidden costs of the AI gold rush, and BCA Research says AI boom driven by earnings bubble, not valuations

** SPX performance YTD:

Energy	24.4%
Tech	23.5%
Industrials	11.5%
Materials	11.2%
SPX	10.7%
Real Estate	9.4%
Comm Svcs	9.0%
Staples	6.5%
Discretionary	3.9%
Utils	3.7%
Healthcare	-3.7%
Financials	-6.0%