Massachusetts Pension Reserves Investment Management, Boston, board hired three alternative investment managers, placing an additional $150 million total into that asset class. New Enterprise Associates IX will invest up to $25 million in venture capital opportunities, primarily in the information technology industry, according to a report by the boards alternative investment consultant Pathway Capital Management. Hellman & Friedman Capital Partners IV will receive up to $75 million; the $2.5 billion buyout fund is focused on the service industry, particularly investment management services. OCM Opportunities Fund III will receive up to $50 million to invest in distressed debt. About 4% of the $26.9 billion pension fund has been placed in alternative investments, with the new allocations bringing PRIM closer to its 8% target allocation, officials said. The money came from rebalancing.