Bank of America clients' net investment in the US stock market last year was the highest since the bank began tracking this data after 2008, although this was mainly driven by the company's share buybacks. The quantitative strategist led by Jill Carey Hall said in a report to clients on Tuesday that the absolute amount of corporate customer buybacks and their share compared to the S&P 500 index all hit the highest level in at least 16 years. Institutional, hedge funds, and retail investors bought ETFs, but sold on a larger scale in US stocks, communication services and information technology led the net purchases of Bank of America customers, and the financial and industrial sectors had the most outflows. Bank of America customers invested 2.1 billion US dollars in US stocks last week, making net purchases for the ninth consecutive week