Shares of oil marketing companies HPCL, BPCL and IOC may turn active as crude oil prices fell to its lowest level since late November on Thursday, on concern over rising global supply and stubbornly high inventories.

Brent crude oil futures broke below $50 a barrel for the first time since late March, hitting an intraday low of $49.69, the lowest level since November 30, said a Reuters report. Upstream firms such as ONGC and RIL may also see higher activity.