Barclays Global Investors and Schroder Investment Management, London, have squeaked past Merrill Lynch & Co. as Europe's largest managers of pension funds. Europe is increasingly becoming a pension marketing battleground; the shift comes several months after Barclays Global Investors launched its first advertising campaign, a $20 million effort. Barclays Global Investors has $107 billion in European pension assets, up more than 30% in the last 12 months, according to data released by consultancy William M. Mercer Inc., New York. Schroder has $101 billion in pension assets; growth figures on the company were not available. Merrill Lynch's European pension assets dropped 3.8% to $100.4 billion.