** S&P 500 .SPX drops second-straight week, craters 9.1% as tariffs reverberate globally .N

** SPX, e-mini S&P futures EScv1, suffer biggest weekly drops since Mar 2020 pandemic panic

** Dow .DJI slides 7.9%, Nasdaq Composite .IXIC crumbles ~10%, also biggest weekly drops since Mar 2020

** Indeed, SPX plunges below its mid-Mar lows, ends down 17.4% from record close; DJI finishes 14.9% below its record close; For IXIC, bear growls, ends down 22.7% from record close

** U.S. 10-Year Treasury yield US10YT=RR tumbles to ~3.99%, on track to end the week below the Cloud, which is around 4.01%

** And at the quarter pole, low volatility SPLV.P sets the pace

** Every sector quakes as Energy and Technology rattled most

** Energy .SPNY plunges 14.1%. Sector slides as Trump's tariffs spark trade war and fuel demand fears, decline further after OPEC+ unexpectedly speeds up oil output hikes, and falls after China's tariff announcement O/R

** Tech .SPLRCT dives 11.4%. PC makers plummet following Trump's tariffs on imports. Dell Technologies DELL.N and HP HPQ.N lose 22% and 19%, respectively

Apple AAPL.O slides as analysts warn tariffs to squeeze profit

Chip stocks drop as Trump's tariffs raise concerns around higher costs, supply chain snags and extend losses after China counters with its own

Semiconductor index .SOX collapses 16% for the week, and at one point, plunges more than 40% from its intraday record intraday high

** Financials .SPSY flop 10.3%. Big banks slump on tariff announcement, and regional banks down as tariffs trigger recession fears

For the week, S&P 500 banks index .SPXBK tumbles 14% and KBW regional banking index .KRX stumbles ~12%

** Industrials .SPLRCI slump 9.4%. Airlines' shares descend on economic uncertainty from tariffs, along with equipment makers Caterpillar CAT.N and Deere DE.N on higher duties on some of biggest trading partners of U.S.

Dow Jones Transportation Average .DJT confirms bear, ends down 25.9% from record close

** Consumer Discretionary .SPLRCD declines 8%. Tesla TSLA.O falls as Q1 deliveries miss estimates, reverses course after Musk reportedly to leave governing partner role, yet ends red on the week

Major retailers such as Best Buy BBY and footwear makers like Nike NKE.N sink after Trump imposes raft of new reciprocal tariffs on Asian production hubs

Amazon.com AMZN.O rises Weds after administration official confirms co's bid for TikTok. Still, AMZN sheds 11% on the week

** Healthcare .SPXHC down 6.5%. Vaccine makers fall on reports top FDA vaccine official pushed out. Moderna MRNA.O plunges 13%

J&J JNJ.N falls after U.S. judge rejects $10 bln baby powder settlement

** Consumer Staples .SPLRCS dip 2.2%. Though Lamb Weston LW.N a rare bright spot, rallies after frozen potato products firm's results please Wall Street. LW notches 9% weekly gain

** Meanwhile, AAII survey shows most pessimism since Financial Crisis bear was ending

** SPX performance YTD:

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

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

))