Complex sentence: In 1975 he founded the investment management firm, Bridgewater Associates, and his investment advisory service has since attracted pension funds and is currently (as of January 2012) the largest hedge fund in the world with nearly $120 billion under management.
Split into simpler sentences: In 1975 he founded the investment management firm, Bridgewater Associates. The investment advisory service has since attracted many clients including pension funds and is currently (as of January 2012) the largest hedge fund in the world with nearly $120 billion under management.