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Sept 12 (Reuters) - U.S. stock index futures were lower for the third straight day on Monday as oil prices fell and on increasing speculation about a possible U.S. interest rate hike as early as next week.
Dow Jones industrial average futures were down 0.30 percent at 17,986, S&P 500 futures were down 0.25 percent at 2,117.5 and Nasdaq 100 futures were down 0.41 percent at 4,652.
** PERRIGO CO PLC, Friday close $88.71, +4.28 pct premarket
Starboard Value LP disclosed a 4.6 percent stake in the generic drugmaker, making the activist investor one of the Dublin-based drugmaker's biggest shareholders.
** HORIZON PHARMA PLC, Friday close $17.26, -1.51 pct premarket
** RAPTOR PHARMACEUTICAL CORP, Friday close $7.45, +19.87 pct premarket
Horizon Pharma said it has agreed to buy Raptor Pharmaceutical for nearly $800 million to strengthen its portfolio of rare disease drugs.
** POTASH CORP OF SASKATCHEWAN INC, Friday close $16.97, +2.83 pct premarket
Canada's Agrium Inc and Potash Corp said on Monday they would combine to create a fertilizer and farm retailing giant with proforma enterprise value of $36 billion.
** PRAXAIR INC, Friday close $117.41, -1.67 pct premarket
German industrial gases group Linde AG and U.S. rival Praxair Inc have ended talks to create a $60-billion-plus market leader, they said on Monday, after failing to agree where to locate key activities and who would run the business.
** HP INC, Friday close $14.07, -0.85 pct premarket
The computer and printer maker said it would buy Samsung Electronics Co Ltd's printer business in a deal valued at $1.05 billion.
** TESLA MOTORS CO, Friday close $194.47, +0.02 pct premarket
The electric-car maker's Chief Executive Elon Musk said on Sunday the automaker was updating its semi-autonomous driving system Autopilot with new limits on hands-off driving and other improvements that likely would have prevented a fatality in May. (Compiled by Arunima Banerjee in Bengaluru; Edited by Shounak Dasgupta)