* Credit jitters persist despite latest actions
* IBM profit lends support to techs
* Financials drop as credit remains clogged
* Dow off 1.9 pct, S&P off 1.7 pct, Nasdaq down 0.8 pct (Updates to late afternoon, changes byline)
By Kristina Cooke
NEW YORK, Oct 9 (Reuters) - U.S stocks fell for a seventh straight session on Thursday as investors worried recent moves by authorities worldwide to thaw frozen credit markets might not be enough to avert a global recession.
The S&P financial index <.GSPF> dropped 4.6 percent as Wednesday's coordinated global interest rate cuts and myriad other official actions to unfreeze money markets did little to boost confidence in the banking sector.
Credit markets remained clogged. The interbank cost of borrowing dollars for any period beyond overnight rocketed -- three month dollar Libor hit its highest this year. For more see [
].Morgan Stanley <MS.N> plunged by as much as 25 percent on concern about the status of a planned $9 billion investment by Japan's top bank, Mitsubishi UFJ Financial Group Inc <8306.T>. But the bank shot down speculation about the deal and some traders blamed the steep drop on short-sellers after the end of a temporary ban on the bearish bets in financial stocks.
Energy companies Exxon Mobil <XOM.N> and Chevron <CVX.N> were the top drag on the Dow as the price of oil fell $2 a barrel. Shares of General Motors <GM.N> tumbled 17.5 percent to $5.70 a day after the car maker reported European sales fell in the first nine months of the year.
"The market is in show-me mode. There's a crisis of confidence. I feel we're going to have gloomy headlines for some time, including some more bank failures," said Bruce Zaro, chief technical strategist at Delta Global Advisors Inc in Plymouth, Massachusetts, adding:
"There's been muted reaction to anything that the authorities have done" to deal with the credit crisis.
The Dow Jones industrial average <
> fell 149.34 points, or 1.61 percent, to 9,108.76, while the Standard & Poor's 500 Index <.SPX> dropped 17.18 points, or 1.74 percent, to 967.76. The Nasdaq Composite Index < > was down 8.93 points, or 0.51 percent, at 1,731.40.Volume was relatively light with many market participants absent for the Jewish Yom Kippur holiday.
In early afternoon trading, Morgan Stanley's stock was down 12.4 percent at $14.72, having fallen as much as 25 percent.
Nasdaq losses were kept in check as solid quarterly profits at tech bellwether IBM <IBM.N> raised hopes for the outlook for other technology companies. IBM gained 1.9 percent to $92.23.
Shares of life insurers tumbled, with the Dow Jones U.S. Life Insurance Index <.DJUSIL> shedding 13.4 percent.
XL Capital <XL.N> was one of the worst-hit companies in the sector, plunging 52 percent to trade at $4.15 -- the steepest percentage decliner on the New York Stock Exchange.
Earlier, Sandler O'Neill said that because of investment leverage, they expect the mark-to-market effect on XL's book value to be greater than on the typical insurer they follow.
Chevron <CVX.N> shares fell 5.5 percent to $69.05 and Exxon Mobil <XOM.N> shares dropped 5.8 percent to $72.56.
In another sign consumers are stretched, Micron Technology Inc <MU.N> said it will cut its workforce 15 percent due to falling demand for and oversupply of NAND flash memory products used in everything from digital cameras to mobile phones.
The news lifted shares of Micron IM Flash Technologies joint venture partner Intel Corp <INTC.O>, which rose 2.2 percent to $16.61 on Nasdaq. (Editing by James Dalgleish)