* Financial stocks sink on fears of dividend cuts
* Merrill falls on market speculation of more write-downs
* Surge in crude oil prices adds strain on Wall Street (Updates to midday)
By Deborah Jian Lee
NEW YORK, June 20 (Reuters) - U.S. stocks fell sharply on Friday as financial shares slid after several brokerages warned of the likelihood of more dividend cuts and mortgage-related write-downs at U.S. banks.
A spike in crude oil prices, after tumbling 3.5 percent on Thursday, added to investor jitters about inflation and consumer spending. All the major indexes fell more than 1 percent.
Investors dumped commercial bank shares after Merrill Lynch said it sees dividend cuts at Bank of America <BAC.N>, Regions Financial <RF.N>, SunTrust Banks <STI.N> and Wachovia <WB.N>.
Shares of Merrill and other investment banks also took a hit as rumors circulated among traders that Merrill may give a profit warning <MER.N> and take additional write-downs on its mortgage holdings.
Merrill's stock fell 3.5 percent to $36.38. A Merrill Lynch spokeswoman declined to comment.
"Couple oil with all the financial concerns coming back to light and you have all the fixings for a down day," said Edward Bretschger, director of equity sales and trading at Calyon Securities in New York.
The Dow Jones industrial average <
> fell 137.44 points, or 1.14 percent, to 11,925.65. The Standard & Poor's 500 Index <.SPX> slipped 16.28 points, or 1.21 percent, to 1,326.55. The Nasdaq Composite Index < > dropped 45.72 points, or 1.86 percent, to 2,416.34.The rumors on Merrill dragged on other investment banks, with Lehman Brothers Holdings Inc <LEH.N> shares down 2.7 percent to $23.79 and Morgan Stanley <MS.N> shares down 2.9 percent to $39.03.
In addition, two Wall Street investment banks cut their earnings estimates for the current quarter on home finance companies Fannie Mae <FNM.N> and Freddie Mac <FRE.N>, citing persistent erosion in U.S. housing and mortgage credit.
Shares of Fannie Mae, the No. 1 mortgage finance company, lost 3.9 percent to $24.02, while shares of Freddie Mac slumped 5.5 percent to $22.35.
Short sellers targeted financial stocks in particular.
Short interest in both Washington Mutual <WM.N>, the largest U.S. savings and loan, and top insurer American International Group <AIG.N> climbed more than 23 percent. Short interest in shares of Switzerland's UBS <UBS.N> nearly doubled.
AIG shares declined 1.7 percent to $32.51 on the New York Stock Exchange. Washington Mutual stock was down 0.5 percent at $6.32.
Among bank shares, SunTrust lost 2.3 percent to $34.50, and Wachovia shed 2.3 to $17.37, while Regions Financial rose 2.2 percent to $11.42 and all in NYSE trading.
Shares of Yahoo Inc <YHOO.O> fell more than 3 percent as reports of a brain drain raised fresh worries about the future of the Web company after it chose to partner with Google Inc <GOOG.O> instead of Microsoft Corp <MSFT.O>.
The price of oil <CLc1> rose more than 2 percent, buoyed by China's decision to raise fuel prices and nervousness over tensions between Israel and Iran. (Editing by Leslie Adler)