* Global M&A activity eases recovery concerns
* Bonds fall on profit taking, euro weakens further
* Wall Street opens higher but trims gains
(Updates with U.S. markets open)
By Walter Brandimarte and Natsuko Waki
NEW YORK/LONDON, Aug 23 (Reuters) - World stocks rebounded from a one-month low on Monday as a slew of corporate takeover activity supported investor sentiment and boosted the price of oil.
The dollar was stable against a basket of major currencies but the euro weakened further, hurt by persistent concerns over the euro zone economy.
Investors sold some U.S. Treasury debt, pulling benchmark yields up from recent 17-month lows, to take profits and make room for this week's $109 billion slate of bond auctions.
Market sentiment improved as several merger and acquisition deals were announced in a sign companies are making use of high cash balances and historically low borrowing costs to look for bargains and expand their business.
Among the deals, Hewlett-Packard Co <HPQ.N> offered $24 a share in cash for data storage company 3PAR Inc<PAR.N>. The $1.6 billion offer tops a competing bid by technology rival Dell Inc<DELL.O>. For details, see [
].Campbell Soup Co <CPB.N> may make a $2.3 billion break-up bid for Britain's United Biscuits, which is owned by private equity firms PAI Partners and Blackstone Group LP <BX.N>, according to a report in the London-based Sunday Times. [
]HSBC is also in talks to buy a stake in South Africa's Nedbank in a potential $6.8 billion deal. In Asia, an estimated $58 billion worth of M&A was playing out Monday.
"The whole market is geared to M&A activity," said David Buik, senior partner at BCG Partners. "We're of the opinion that the quality of economic data across the world is poor, but on the other side of the coin there is enough M&A activity out there to limit any kind of a fall in the immediate future."
Thomson Reuters data showed global mergers and acquisitions have hit nearly $200 billion so far in August.
The three main U.S. stock indexes opened higher, but trimmed gains later, with the Nasdaq turning negative.
The Dow Jones industrial<
> average was trading up 25.65 points, or 0.25 percent, at 10,239.27, while The Standard & Poor's 500 Index<.SPX> rose 3.34 points, or 0.31 percent, to 1,075.03. The Nasdaq Composite Index< > was down 1.78 points, or 0.08 percent, at 2,177.98.The MSCI All-Country World equity index <.MIWD00000PUS>rose 0.44 percent while the FTSEurofirst 300 index <
> of top European shares jumped 0.99 percent after three consecutive session of losses.Mining shares gained as financial markets bet Australia's inconclusive weekend elections would lead to a change of government, spelling the end to a plan to impose tax on major iron ore and coal mines.
The STOXX Europe basic resources index <.SXPP> rose 1.7 percent, while BHP Billiton <BLT.L>, Anglo American<AAL.L>, Antofagasta<ANTO.L> and Rio Tinto<RIO.L> were up 1.6 to 2.2 percent.
Foster Group closed up more than 7 percent after sources told Reuters beverage groups SABMiller and Asahi Breweries were looking at the Australian brewer's beer operations, valued at more than $10 billion.
EURO WEAKENS
Even as the dollar was little changed against a basket of major currencies measured by the U.S. Dollar Index, the euro was down 0.15 percent against the greenback, at $1.2686.
The single European currency was hurt by concerns about the euro zone economy and prospects of loose monetary policy for an extended period.
The number of investors betting against the euro has increased, data from the Commodity Futures Trading Commission showed. [
]=Data from UBS AG also showed a drop in net investment flows into the euro zone for a third consecutive week.
"August's deceleration in activity (in Europe) has dented some of the euro bulls' arguments about economic outperformance vis-a-vis the United States and as such put a cap on any euro rally for now," said Boris Schlossberg, director for currency research at GFT in New York.
The Australian dollar reversed losses after being dented by political uncertainty from an inconclusive general election.
The currency fell earlier after neither major party in Australia won an overall majority in Saturday's election. [
]The Aussie traded as low as $0.8864 <AUD=> but it recouped losses to trade at $0.8961, helped by buying from real-money accounts.
U.S. Treasuries prices gave back part of a recent rally. The benchmark 10-year U.S. Treasury note <US10YT=RR> was down 4/32 in price, with the yield at 2.6303 percent. The 30-year U.S. Treasury bond <US30YT=RR> lost 20/32 in price, with the yield at 3.6956 percent. (Additional reporting by Leah Schnurr, Burton Frierson and Vivianne Rodrigues; Editing by Andrew Hay)