The snowball is starting to turn into an avalanche as it relates to the June 2020 oil futures contracts. Now, everybody is headed for the exits, including one of the fund industry's biggest names.Following the lead of funds, such as the United States Oil Fund (USO), iShares announced this week that it's going to roll any positions in the June 2020 crude oil contracts in all of its commodity-related indices forward to the July 2020 expiration. The change will take place on Wednesday.Why are they doing this? Clearly, they think there's a chance that the June contract could go to zero just like the May one did and they want to get away from any potential losses in that scenario. These rolls typically take place shortly before contract expiration, but iShares isn't wasting any time in moving away from that kind of liability.Oil funds are major holders of short-term futures contracts, so expect the price of the June 2020 contract to likely be under pressure until its expiration in a few weeks. As was the case earlier in April, the contracts 2-3 months out remain more reflective of the true value of oil.The June contract is seeing a nice bounce in early Wednesday trading on hopes that an economic reopening is near and positive trial results from Gilead, but oil likely stays in that $15-20 range for the near-term.