Japanese investors tiptoe back to foreign bonds as yields rise on stimulus hopes
* Banks still cautious about rise in bond yields * Yen-hedged 10-yr U.S. Treasuries yield more than 30-yr JGBs * Insurers still not attracted by U.S. bonds TOKYO, Feb 8 (Reuters) - Japanese investors have stepped up buying in foreign bonds after hopes of a massive U.S. stimulus boosted their yields, but many of them are still cautious, betting their bear trend could continue for a while. Data from the Japanese Ministry of Finance showed on Monday Japanese investors bought 2.49 trillion yen ($23.6 billion) of foreign bonds last month, marking an eight straight month of their net buying. A larg...