The Abu Dhabi Investment Authority, a sovereign-wealth fund with assets estimated at more than $700 billion, is relying less on external money managers and handling more of its investments in-house as its owner grapples with lower oil prices. Funded by excess revenue from the government of Abu Dhabi, a major Persian Gulf oil producer, ADIA was managing 35% of its money in-house in 2014, compared with 25% in the previous year, according to an annual review released Tuesday. Investors watch ADIA’s allocations and money-management strategies carefully because of the effect a shift by a fund its size could potentially have on asset prices. The change reflected growth in internal expertise in recent years, the fund’s managing director, Sheikh Hamed Bin Zayed Al Nahyan, said in a letter accompanying the report. “While this work is now nearing its conclusion, we will continue to recruit selectively in 2015,” Sheikh Hamed said. […]