ARLINGTON, Va.--(BUSINESS WIRE)--Total assets of the world’s largest 300 pension funds grew by over 3% in 2014 (compared to around 6% in 2013) to reach a new high of over $15 trillion, according to Pensions & Investments (P&I) and Towers Watson research. Ten years ago, total assets at the world’s largest pension funds grew by 27% to reach $8.4 trillion and move above the previous high of $6.6 trillion, reached in 2003. The Towers Watson global 300 research, conducted in conjunction with