* World stocks rally on economy hopes
* European shares up 1.6 percent, Japan 1.2 percent
* Dollar rises about 101 yen
* Euro zone government bonds weak
By Jeremy Gaunt, European Investment Correspondent
LONDON, April 6 (Reuters) - World stocks rose for a fifth straight session on Monday as investors sought bargains against a background of increasing optimism about the global economy.
Underlining the mood, the Japanese yen, which usually gains when investors worry about risk, fell to a six month low against the dollar.
"Hopes that recent global economic stabilisation packages will work has revived sentiment," U.S. financial giant Citi said in a note to clients, although it also warned against overconfidence.
MSCI's all-country world index <.MIWD00000PUS> rose 0.8 percent for a 7.3 percent gain so far in April. It is now down less than 5 percent for the year.
U.S. home sales, auto sales data; company purchasing managers' surveys, and reports on credit in the UK, have all offered a more optimistic readout than that to which investors have become accustomed.
(For an overview click on [
]; for the top five themes of the week click on [ ])The FTSEurofirst 300 <
> index of top European shares was up 1.6 percent, tracking strong gains in Asia and a late rally in the United States on Friday. The index has risen around 21 percent since hitting a lifetime low on March 9.Earlier, Japan's Nikkei average rose 1.2 percent to strike a three-month closing high. The benchmark <
> gained 108.09 points to 8,857.93.No impact was seen from Sunday's launch by North Korea of a long-range rocket that flew over Japan. [
]
SELLING YEN
Helping Japanese stocks, especially exporters, was the falling yen.
The Japanese currency fell broadly as investors took on perceived riskier assets. The dollar rose above 101 yen <JPY=>, the highest in almost six months, while the euro also extended gains against the Japanese currency to levels last seen in October <EURJPY=>.
"Markets are taking heart that the pace of economic contraction is fading," said Lee Hardman, currency economist at Bank of Tokyo-Mitsubishi UFJ. "That is helping risk assets and prompting the unwinding of safe assets."
The dollar was up 0.8 percent at 101.15 yen, after rising to 101.23 yen <JPY=>, the highest since Oct. 21, 2008, according to Reuters data. The dollar, however, lost ground against other major currencies as risk appetite improved.
The euro gained 0.4 percent to $1.3534 <EUR=>.
Euro zone government bond prices were weak. Two-year bond yields <EU2YT=RR> were 1 basis point higher at 1.543 percent, having risen as high as 1.62 percent, and 10-year yields <EU10YT=RR> were flat at 3.243 percent, around highest since mid-February. (Additional reporting by Tamawa Desai; editing by Patrick Graham) (To read Reuters Global Investing Blog click on http://blogs.reuters.com/globalinvesting; for the MacroScope Blog click on http://blogs.reuters.com/macroscope; for Hedge Fund Hub click on http://blogs.reuters.com/hedgehub)