KEY POINTS
  • The Untied States Oil Fund dropped 25% on Tuesday as managers made multiple changes to the fund's structure in an effort to stave off additional losses.
  • The fund, which trades under the ticker USO and which is popular with retail investors, seeks to track the price of oil.
  • One change is that the fund will now invest in multiple futures contracts, rather than focusing on the contract for the nearest month.

The United States Oil Fund, a popular exchange-traded security known for its 'USO' ticker, plunged more than 30% on Tuesday as the fund's managers made repeated changes to the fund's structure in an effort to stave off additional losses. The fund, which is popular with retail investors, seeks to track the price of oil.

The latest change to USO's terms came on Tuesday afternoon when the fund said it would invest in varying oil futures contracts. According to a regulatory filing, USO has already moved money into the oil contract for August delivery.