Petroleo Brasileiro Petrobras SA (ADR) (NYSE:PBR) shares increased 4.11% to $8.86 in Wednesday’s pre-market trading following news that the Brazilian government is considering making concessions to local contractors in an attempt to revitalize Brazil’s flailing economy. The energy corporation is one of the largest corporations in Latin America when measured by revenue.

Seadrill Ltd (NYSE:SDRL) shares fell 0.70% in pre-market trading to $12.82 as the offshore drilling company has been trying to survive through tumultuous oil prices. Seadrill will be releasing quarterly earnings tomorrow and investors will be looking at the company’s liquidity after Seadrill suspended dividends as well as their plans to build new rigs.

Nanosphere, Inc. (NASDAQ:NSPH) shares increased nearly 13% to $4.00 after SWK Holdings Corp increased their stake in the diagnostic test company to 6.4%. SWK is a finance company that specializes in the healthcare sector.

Workday Inc (NYSE:WDAY) shares are down 7.45% to $85.60 after the company released earnings in which they posted a loss of $(0.02), missing the analyst estimate of $0.08. The management software company forecast billings for the second quarter to be between $290 million and $295 million, falling short of analysts’ estimates of $303 million.