(Recasts, adds analysts comments, updates prices)
By Pedro Nicolaci da Costa
NEW YORK, March 31 (Reuters) - U.S. stocks gained on Monday as a regulatory overhaul in Washington propped up financial shares, but shares in Europe closed lower as renewed concern about the credit crunch hit bank stocks.
The persistent concerns about the global banking system also drove up prices of U.S. government bonds.
And in foreign exchange markets, the euro came close to a record high against the dollar as higher-than-forecast euro-zone price data reinforced expectations that the European Central Bank will not start cutting interest rates soon.
The fall in stocks in Europe marked the the worst quarterly performance in over five years, with the pan-European FTSEurofirst 300 index of top European shares now down for five straight months, its worst run since a six-month stretch of declines from April to September 2002.
A reversal in the record-prone commodities sector continued, meanwhile, with oil prices falling over 3 percent to $102 a barrel. The Reuters/CRB commodities index was down 1.8 percent.
The Dow Jones industrial average rose 0.5 percent as investors exhibited cautious optimism regarding a White House plan to boost the Federal Reserve's role in overseeing financial institutions.
But there was broader skepticism that this and other measures to unclog the banking system, such as massive liquidity injections from global central banks, would do the trick.
"The Fed measures are lending some stabilization to the market, but it doesn't seem like the financing aspect for banks is getting any better," said Sean Murphy, bond trader with RBC Capital Markets in New York.
The Dow Jones industrial average <
> was up 62.04 points, or 0.51 percent, at 12,278.44. The Standard & Poor's 500 Index <.SPX> was up 8.18 points, or 0.62 percent, at 1,323.40. The Nasdaq Composite Index < > was up 14.81 points, or 0.65 percent, at 2,275.99.JPMorgan Chase & Co <JPM.N> shares gained 2.7 percent to $43.84, leading the Dow industrials and among the S&P's major gainers. An S&P index of financial shares <.GSPF> shot up 1.6 percent.
Equities found some comfort in data from Chicago purchasing managers showing that the Midwest factory sector, while still contracting, was do so at less severe pace.
In Europe, the FTSEurofirst 300 index closed down 0.26 percent at 1,262.14 points.
Banks were the worst performing sector in Europe after a Merrill Lynch research note said Switzerland's UBS<UBSN.VX>, one of the biggest casualties of the credit crunch among Europe's large banks, may see further write-downs.
"You can break the market down into two components. You've got the credit crunch affecting financials and then you've got the economic slowdown," said Kevin Lilley, a portfolio manager at Royal London Asset Management who helps manage 1.1 billion euros ($1.74 billion).
"We are now five years into this economic cycle and I think people's estimates are way, way too high," he said, adding: "It is difficult to see the market making major headway when there are going to be major downgrades coming through."
UBS shares fell as much as 4.8 percent after Merrill Lynch said it expected the bank to make a further $11 billion of first-quarter write-downs, resulting in a loss of 8.2 billion Swiss francs ($8.22 billion) in the first three months.
UBS ended down just 0.4 percent on Monday but has fallen nearly 50 percent this quarter, bearing the brunt of investor panic over write-downs.
The barrage of bad news from the banking sector was unrelenting. Over the weekend, Lehman Brothers <LEH.N> became embroiled in what it says was a fraudulent scam in Japan that the firm claims cost it $352 million.
The dispute arose as Lehman has been beset by market rumors that it could see a run on the bank similar to the one that dragged down rival Bear Stearns <BSC.N>. Lehman has said it has more than enough capital to do business in the current environment.
In the U.S. Treasuries market, the second-guessing on the credit system kept the bond market well bid, with benchmark 10-year notes <US10YT=RR> up 7/32 and offering a yield of 3.41 percent, down three basis points.
In the oil markets, crude was down over $4 a barrel as traders dumped their positions ahead of quarter-end.
The euro again flirted with record highs against the dollar on the expectations that the ECB would not start cutting interest rates soon.
The outlook for euro-zone rates contrasts with the United States where the Federal Reserve is widely expected to continue to cut the benchmark rate in a bid to stoke economic growth. Higher rates tend to lure investors and increase demand for a currency.
The euro rose as high $1.5895 -- just short of record highs set two weeks ago <EUR=> -- before retreating to around $1.5802 midway through the New York session. It was a volatile session in both London and New York, with the single euro zone currency swinging between gains, losses and trading little changed. (Reporting by Pedro Nicolaci da Costa and John Parry; Editing by Leslie Adler)