The Standard & Poor’s 500 Index and Nasdaq Composite Index capped their worst week since 2012, with stocks most beloved by hedge funds plunging amid concern valuations have climbed too high as earnings season starts.
Allegion Plc (NYSE: ALLE), the S&P 500 company with the highest hedge fund ownership, had its biggest drop ever for the week.
JPMorgan Chase & Co. (NYSE: JPM) plunged 7.5 percent, the most since May 2012, as profit fell.
Bed Bath & Beyond Inc. (Nasdaq: BBBY) tumbled 8 percent after the retail chain’s earnings forecast trailed estimates.
The Nasdaq Biotechnology Index sank a seventh week, the longest streak since 1998 as the gauge entered a bear market.
The S&P 500 fell 2.6 percent to 1,815.69 for the week, as the benchmark gauge erased its gains for the year.
The Nasdaq Composite sank 3.1 percent to 3,999.73 and the Russell 2000 Index slid 3.6 percent to 1,111.44.
All three measures had the biggest retreat since June 2012. The Dow Jones Industrial Average lost 385.96 points, or 2.4 percent, to 16,026.75, its lowest level since February.
Companies in which hedge funds own the most shares have fallen about twice as fast as the overall market since April 2, when the S&P 500 reached a record high of 1,890.90, according to data compiled by Bloomberg.
Hedge funds own 30 percent of the shares in Allegion, Dollar General Corp. (NYSE: DG) and Constellation Brands Inc. (NYSE: STZ), the most among companies in the S&P 500.
The 10 S&P 500 stocks that are most popular among the speculators have fallen 7.5 percent since April 2, compared with a 4 percent drop for the U.S. equity gauge.
About 37 percent of Allegion, the maker of security systems, is owned by hedge funds. Shares of the company slumped 6.9 percent in the week to $50.01.
H&R Block Inc. (NYSE: HRB), the tax software provider that is about 27 percent owned by hedge funds, is down 6.3 percent.
Pressure may be mounting on professional speculators with losses in individual stocks spurring more pain than they do for ordinary investors.
The average hedge fund has 63 percent of its assets invested in its 10 largest holdings, twice as much as mutual funds, according to a Goldman Sachs Group Inc. (NYSE: GS) note from Feb. 20.
About 28 percent of their holdings changed in the fourth quarter, an all-time low, the note said.
The percentage of hedge-fund holdings that amount to bets that stocks will rise has decreased to 46 percent, falling from 58 percent earlier in the year, a sign of selling, according to an April 9 research note from Credit Suisse Group AG (NYSE: CS).
Net exposure in the United States declined to the lowest level since August 2012, the report said.
Benchmark indexes started the week with a continuation of a technology sell-off that began April 3.
Stocks rebounded over the next two days as the Federal Reserve eased concern about the timing of interest-rate increases, only to sink through the rest of the week amid signs of weaker earnings.
The Nasdaq Biotechnology Index dropped 4.5 percent for the week. The gauge is down more than 20 percent from an all-time high on Feb. 25, meeting the common definition of a bear market.
Portola Pharmaceuticals Inc. (Nasdaq: PTLA) fell 18 percent, the most ever, to $20.78.
The Dow Jones Internet Composite Index dropped 3.3 percent for a fifth week of declines, the worst stretch since June 2011.
Groupon Inc. (Nasdaq: GRPN) dropped 11 percent to $6.95, a 10-month low. Shares of the Chicago-based shopping website operator more than doubled in 2013.
TripAdvisor Inc. (Nasdaq: TRIP), which soared 98 percent last year, lost 7.8 percent to $78.99. Twitter Inc. (NYSE: TWTR) retreated 7.2 percent to $40.05.
Health care and financial shares had the largest drops among 10 major industries in the S&P 500, erasing 4 percent.
The Dow Jones Transportation Average had its worst week since August, falling 2.8 percent.
The Morgan Stanley Cyclical Index slipped 3.3 percent. An S&P index of homebuilders tumbled 4 percent.
Utilities had the only gain, rising 0.5 percent as a group.
The Chicago Board Options Exchange Volatility Index surged 22 percent to 17.03.
The gauge has soared 30 percent since April 2. The Credit Suisse Fear Barometer, which measures investor sentiment based on three-month horizons, closed the week at 31.75, the seventh week the index has been above 30.
Alcoa Inc. (NYSE: AA) unofficially started the earnings season on April 8 with profit that beat forecasts. The shares ended the week down 0.7 percent to $12.54.
JPMorgan plunged 7.5 percent to $55.30 after reporting first-quarter profit that fell short of analysts’ estimates on lower revenue from fixed-income trading and mortgages.
Bed Bath & Beyond lost 8 percent to $63.72. The U.S. retail industry is suffering from still-shaky consumer spending and diminished traffic at shopping centers.
Growth of Bed Bath & Beyond’s same-store sales slowed to 2.4 percent in fiscal 2013, from 2.7 percent the prior year.
Profit for members of the S&P 500 probably fell 0.9 percent in the first quarter, analysts now forecast, after anticipating a 6.6 percent rise in January. Sales increased 2.6 percent, according to projections.