The stake sale could fetch Aramco around $10 billion, according to unnamed sources familiar with the matter. : (Bloomberg) -- Brookfield Asset Management Inc. and KKR & Co. are among top infrastructure investors weighing bids for a stake in Saudi Aramco’s oil pipelines, people familiar with the matter said. Apollo Global Management Inc. has also been studying whether to make an offer, the people said, asking not to be identified as the matter is private. The stake sale could fetch Aramco around $10 billion, the people said.