Royal Dutch Shell’s takeover of BG Group may look less attractive after the slide in oil prices but the fact the same investors own nearly half of both firms means the deal is still likely to go through. Investors holding about 43 percent of Shell’s shares also hold 53 percent of BG, according to Reuters data. For example, Blackrock, Franklin Mutual Advisers and Norges together hold more than 12 percent of Shell and nearly 7.5 percent of BG.