MILAN—Investors are heading towards the end of the year in a “risk-on” mood, having reduced cash allocations and lifted their overweight position on U.S. stocks to the highest since August 2013, BofA Securities’ monthly fund manager survey showed. Inflation remains the biggest tail risk for markets but a majority of 61 percent believes it is transitory and expect the Federal Reserve to remain “well behind the curve” in setting its monetary policy, the U.S. investment bank added on Tuesday. The widely watched survey was conducted between the 5th to 11th November among investors with a total of $1.2 trillion of assets under management. “Investors are not expecting the Fed to tighten aggressively (i.e. buy-in for Powell narrative on transitory inflation and modest tapering),” said Bofa adding that investors now see on average 1.5 Fed rate hikes next year, up from 1.1 last month. Cash allocations fell to 4.4 percent in …