Seven Twitter Inc (NYSE:TWTR) insiders, including a founder and former chief executive, got a lot more than bird seed in a recent round of selling stock. Insiders sold 1,181,619 shares for $44,892,077, an average of $37.99 each, from Dec. 1 through 23. The sales were made through 10b5-1 plans and came as Twitter shares find themselves losing altitude. Twitter Inc (NYSE:TWTR) belongs to Technology sector. Its net profit margin is -82.60% and weekly performance is -1.78%. On last trading day company shares ended up $36.42. Twitter Inc (NYSE:TWTR) distance from 50-day simple moving average (SMA50) is -10.94%.

Unilife Corp (NASDAQ:UNIS) saw a significant increase in short interest in the month of November. As of November 28th, there was short interest totalling 23,982,976 shares, an increase of 4.3% from the November 14th total of 22,992,539 shares, Analyst Ratings News reports. Unilife Corporation (NASDAQ:UNIS) shares increased 5.31% in last trading session and ended the day at $3.37. UNIS return on assets is -83.30%. Unilife Corporation (NASDAQ:UNIS) quarterly performance is 41.60%.

On Dec 19, BlackRock, Inc. (NYSE:BLK), appointed Geir Espeskog as iShares head of distribution for Asia Pacific. On 29 December, BlackRock, Inc. (NYSE:BLK) shares decreased -0.05% and was closed at $363.46. BLK EPS growth in last 5 year was 23.90%. BlackRock, Inc. (NYSE:BLK) year to date (YTD) performance is 17.61%.

Moody’s Latin America Agente de Calificación de Riesgo has placed the Baa2/Aaa.ar ratings on Petrobras Argentina SA (NYSE:PZE) USD300 million in guaranteed Series S notes (CUSIP 71646JAB5) on review for possible downgrade. Petrobras Argentina SA (NYSE:PZE) ended the last trading day at $4.85. Company weekly volatility is calculated as 3.78% and price to cash ratio as 6.35. Petrobras Argentina SA (NYSE:PZE) showed a weekly performance of 0.62%.

Forest-products company Rayonier Inc. (NYSE:RYN) disclosed in regulatory filing that On December 23, 2014, Jeb Bush notified the Company that he is resigning from the Company’s Board of Directors effective as of December 31, 2014. He was elected as a director in 2008. Rayonier Inc. (NYSE:RYN) belongs to Industrial Goods sector. Its net profit margin is 17.40% and weekly performance is 2.62%. On last trading day company shares ended up $28.55. Rayonier Inc. (NYSE:RYN) distance from 50-day simple moving average (SMA50) is -1.34%.