Big U.S.-based companies in the Standard & Poor's 500, including online advertising company Alphabet (GOOGL), software maker Microsoft (MSFT) and global bank JPMorgan Chase (JPM), suffered a collective loss in market value Friday of $657 billion, according to a USA Today analysis of data from S&P Global Market Intelligence. More than $160 billion in market value was erased from just the 30 stocks in the Dow Jones industrial average, says Howard Silverblatt, index strategist at S&P Dow Jones Indices.
The dramatic erasure of market value of big U.S. companies shows the double-edged nature of rising global commerce. Actions by a nation across the Atlantic can set off global asset repricing that costs U.S. investors serious money and reduces the value of U.S. companies.
Alphabet, the parent company of Google, was the company to suffer the biggest market value blow. The stock's 4.2% decline to $685.20 a share cut the company's market value by $20.4 billion in one day. Alphabet is still the second-most valuable company in the S&P 500 at $470 billion, but the company's 9% revenue exposure to the United Kingdom wasn't something investors were willing to pay up for Friday.
Tech's heavily global nature, and potential hit to earnings due to the strong U.S. dollar, showed up in the blow to Microsoft, too. The company saw its market value drop $16.3 billion as the stock dropped 4% to $49.83 a share.
While some other banks endured larger percentage drops in stock prices, the 6.9% drop to JPMorgan's stock price resulted in the biggest market value hit suffered by any financial to the tune of $16.3 billion. The bank got 15% of its revenue from Europe, the Middle East and Africa over the past 12 months.
Apple, the most valuable stock in the S&P 500 and Dow wasn't spared, either. The market of digital gadgets fell 2.8%, pushing the stock close to its low, and wiping out $14.8 billion in market value.
Looks like Britain's choice is taking money out of our pockets, too.
BIGGEST MARKET VALUE DESTRUCTION AT S&P 500 COMPANIES FRIDAY
Company, symbol, Market value change Friday (in $ billions)
Alphabet, GOOGL, -$20.4
Microsoft, MSFT, -$16.4
JPMorgan Chase, JPM, -$16.3
Berkshire Hathaway, BRKA, -$14.8
Apple, AAPL, -$14.8
General Electric, GE, -$12.6
Citigroup, C, -$12.2
Wells Fargo, WFC, -$11.2
Amazon.com, AMZN, -$10.9
Bank of America, BAC, -$10.7
Source: S&P Global Market Intelligence, USA TODAY