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U.S. stocks were set to open slightly lower on Tuesday as investors awaited Federal Reserve Chair Janet Yellen's speech for clues on when the central bank may raise interest rates. Dow Jones industrial average futures were down 0.30 percent at 17,396, S&P 500 futures were down 0.21 percent at 2,023.75 and Nasdaq 100 futures were down 0.14 percent at 4,383.25.
** KERYX BIOPHARMACEUTICALS INC, Monday close $4.55, +22.20 pct premarket
The drug developer on Tuesday said its drug to treat iron deficiency anemia in chronic kidney disease patients not yet requiring dialysis met the goals of a late stage clinical trial, potentially paving the way for an expanded approval of the treatment.
** SUNEDISON INC, Monday close $1.26, -34.90 pct premarket
The U.S. solar company whose aggressive acquisition strategy has saddled it with more than $11 billion of debt, is at "substantial risk" of bankruptcy, one of its two publicly listed units warned on Tuesday.
** NEUROMETRIX INC, Monday close $1.61, +2.48 pct premarket
The medical technology company announces a 'pilot' deal with health insurer Premera Blue Cross.
** LENNAR CORP, Monday close $46.7, +3.30 pct premarket
The U.S. homebuilder posts Q1 profit and revenue above the average analyst estimate as it sells more homes at higher prices.
** CHIPOTLE MEXICAN GRILL INC, Monday close $475.31, -1.96 pct premarket
Wedbush Securities cuts rating on the burrito chain operator to "underperform" from "neutral". "We believe a sales recovery by 2018 is the best-case scenario, not the basecase scenario," Wedbush analyst Nick Setyan writes in note.
** AMBARELLA INC, Monday close $40.71, +6.85 pct premarket
Morgan Stanley upgrades stock rating to "overweight" from "equal-weight". Ambarella forecast Q1 revenue below market estimates this month, hurt by weak demand from top customer GoPro Inc.
** BIOLINERX LTD, Monday close $1.1802, +3.37 pct premarket
The drug developer provides positive mid-stage data on its lead drug in patients with relapsed or refractory acute myeloid leukemia.
** AMAYA INC, Monday close $11.23, -0.53 pct premarket
Canadian gambling website operator's Chief Executive David Baazov was taking an indefinite paid leave of absence, the company said, a week after Baazov was charged with insider trading by Quebec's securities regulator.
** CLECO CORP, Monday close $48.81, +13.19 pct premarket
The Louisiana electricity supplier said on Monday that it has got approval from the state's public service commission to sell itself to an investor group led by Macquarie Infrastructure and Real Assets. (Compiled by Rosmi Shaji in Bengaluru; Edited by Shounak Dasgupta)