MW 20 stocks leading the stock-market plunge on Monday as Trump brings down the tariff hammer

By Philip van Doorn

Among the S&P 500, 91% of stocks showed early declines following President Trump's announcements of tariffs against Canada, Mexico and China

Investors don't like tariffs. The S&P 500 was down 1.9% in morning trading Monday, and 91% of its component stocks were down, after President Donald Trump announced 25% tariffs on imports from Mexico and Canada and an additional 10% in tariffs on imported goods from China.

Trump said later Monday morning that tariffs on Mexico were being paused for a month.

Click here for ongoing live coverage of market events and announcements from Washington, D.C.

Related coverage:

-- Here are all the ways Trump's tariffs could hit stocks, according to Goldman Sachs

-- JPMorgan says Trump administration may be 'business unfriendly'

-- These are the companies that can withstand extreme tariff strain, says Morgan Stanley's Mike Wilson

-- Here are the automakers hit hardest by the tariffs on Mexico and Canada

As of 10 a.m. Eastern time, 91% of stocks in the S&P 500 SPX were showing declines for the trading session. Twelve of the stocks were down 5% or more.

Before we list the trading session's early losers and winners, here's a chart showing how the 11 sectors of the S&P 500 were performing early Monday:

   Sector or index           Feb. 3 price change  2025 price change  2024 price change 
   Information Technology                  -2.9%              -5.8%              35.7% 
   Consumer Discretionary                  -2.9%               1.3%              29.1% 
   Industrials                             -1.9%               3.0%              15.6% 
   Financials                              -1.7%               4.6%              28.4% 
   Materials                               -1.7%               3.8%              -1.8% 
   Real Estate                             -1.3%               0.4%               1.7% 
   Utilities                               -0.9%               1.9%              19.6% 
   Communication Services                  -0.9%               8.0%              38.9% 
   Energy                                  -0.5%               1.5%               2.3% 
   Consumer Staples                        -0.2%               1.7%              12.0% 
   Healthcare                              -0.2%               6.4%               0.9% 
   S&P 500                                 -1.9%               0.8%              23.3% 
                                                                       Source: FactSet 

These 20 stocks in the S&P 500 showed the largest declines for the trading session on Monday at 10 a.m. ET:

   Company                        Ticker  Feb. 3 price change  2025 price change  2024 price change 
   Aptiv PLC                    APTV                    -8.2%              -5.2%               -33% 
   Super Micro Computer Inc.    SMCI                    -7.8%             -13.7%                 7% 
   FedEx Corp.                  FDX                     -6.7%             -12.2%                11% 
   Moderna Inc.                 MRNA                    -5.8%             -10.7%               -58% 
   Mosaic Co.                   MOS                     -5.7%               7.0%               -31% 
   Tesla Inc.                   TSLA                    -5.6%              -5.4%                63% 
   Celanese Corp.               CE                      -5.4%              -2.9%               -55% 
   Dow Inc.                     DOW                     -5.4%              -7.9%               -27% 
   Baxter International Inc.    BAX                     -5.3%               5.7%               -25% 
   BorgWarner Inc.              BWA                     -5.3%              -5.0%               -11% 
   Stanley Black & Decker Inc.  SWK                     -5.2%               4.0%               -18% 
   Franklin Resources Inc.      BEN                     -5.1%               4.0%               -32% 
   General Motors Co.           GM                      -5.0%             -11.8%                48% 
   $Citigroup Inc(C-N)$.               C                       -4.9%              10.0%                37% 
   Dollar Tree Inc.             DLTR                    -4.9%              -7.0%               -47% 
   Teradyne Inc.                TER                     -4.8%             -12.5%                16% 
   FMC Corp.                    FMC                     -4.8%               9.2%               -23% 
   Microchip Technology Inc.    MCHP                    -4.8%              -9.8%               -36% 
   Best Buy Co.                 BBY                     -4.7%              -4.6%                10% 
   Synchrony Financial          SYF                     -4.6%               1.2%                70% 
   Source: FactSet 

Click the tickers for more about each company, including news coverage, price ratios, charts, financials and technical information.

Read: Tomi Kilgore's guide to the wealth of information available for free on the MarketWatch quote page.

Here are the 10 stocks in the S&P 500 showing the largest gains Monday morning:

   Company                  Ticker    Feb. 3 price change  2025 price change  2024 price change 
   Idexx Laboratories Inc.  IDXX                    11.2%              13.5%               -26% 
   Molina Healthcare Inc.   MOH                      2.6%               9.4%               -19% 
   AbbVie Inc.              ABBV                     2.4%               6.0%                15% 
   Kroger Co.               KR                       2.4%               3.2%                34% 
   Weyerhaeuser Co.         WY                       2.3%              11.3%               -19% 
   EQT Corp.                EQT                      1.9%              12.9%                19% 
   Cboe Global Markets Inc  CBOE                     1.8%               6.5%                 9% 
   AT&T Inc.                T                        1.5%               5.8%                36% 
   Waste Management Inc.    WM                       1.4%              10.7%                13% 
   CME Group Inc. Class A   CME                      1.4%               3.3%                10% 
                                                                                Source: FactSet 

Shares of Idexx Laboratories were up 11% after the company announced a 6% increase in fourth-quarter revenue from the year-earlier quarter and a 13% increase in earnings per share.

Don't miss: Here are January's best and worst stocks - and what may lie ahead for them

-Philip van Doorn

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February 03, 2025 11:08 ET (16:08 GMT)

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