TheStreet Ratings team rates National Bank of Greece (ADR) (NYSE:NBG) as a "sell" with a ratings score of D. National Bank of Greece (ADR) (NYSE:NBG) belongs to Financial sector. Its net profit margin is 22.20% and weekly performance is -3.70%. On last trading day company shares ended up $2.34. National Bank of Greece (ADR) (NYSE:NBG) distance from 50-day simple moving average (SMA50) is -19.63%. On Oct. 30, Alpha Natural Resources, Inc. (NYSE:ANR), reported a third quarter 2014 net loss of $185 million or $0.84 per diluted share, compared with a net loss of $458 million or $2.07 per diluted share in the third quarter of 2013. Alpha Natural Resources, Inc. (NYSE:ANR) shares advanced 15.48% in last trading session and ended the day at $2.91. ANR Gross Margin is 7.70% and its return on assets is -11.80%. Alpha Natural Resources, Inc. (NYSE:ANR) quarterly performance is -27.43%. On Nov 6, Abengoa Yield plc (NASDAQ:ABY) has been forced to switch the currency on its debut bond deal to US dollars, after more than a week of struggling to sell an unrated euro deal to European investors. On 07 November, Abengoa Yield plc (NASDAQ:ABY) shares fell -0.25% and was closed at $32.40. ABY EPS growth in last 5 year was 0.00%. Abengoa Yield plc (NASDAQ:ABY) year to date (YTD) performance is -12.43%. Endeavour Silver Corp (TSE:EDR) Director Bradford Cooke sold 51,700 shares of the company’s stock on the open market in a transaction dated Wednesday, October 22nd. The shares were sold at an average price of $4.47, for a total transaction of $231,331.65. Endeavour Silver Corp. (NYSE:EXK) ended the last trading day at $2.95. Company weekly volatility is calculated as 7.73% and price to cash ratio as 6.61. Endeavour Silver Corp. (NYSE:EXK) showed a weekly performance of -2.96%. Isabel dos Santos, the daughter of Angola's President Jose Eduardo dos Santos, has made a takeover bid for Portugal Telecom, SGPS S.A. (NYSE:PT) that values the target company at 1.2 billion euros, or $1.50 billion. Portugal Telecom, SGPS S.A. (NYSE:PT) belongs to Technology sector. Its net profit margin is 21.10% and weekly performance is -6.75%. On last trading day company shares ended up $1.52. Portugal Telecom, SGPS S.A. (NYSE:PT) distance from 50-day simple moving average (SMA50) is -19.96%.