On Wednesday shares of Cellular Dynamics International, Inc. (NASDAQ:ICEL) closed at $16.47. Cowen and Company lowered shares of Cellular Dynamics International, Inc. (NASDAQ:ICEL) from an outperform rating to a market perform rating in a report released on Tuesday.

On last trading day Golden Star Resources, Ltd. (NYSEMKT:GSS) moved up 3.18% to close at $0.25. Its volatility for the week is 6.30% while volatility for the month is 6.65%. GSS’s sales growth for past 5 years was -3.90% and its EPS growth for past 5 years was -41.10%. Golden Star Resources, Ltd. (NYSEMKT:GSS) monthly performance is -24.24%. On 26 March, Golden Star Resources, Ltd. (NYSEMKT:GSS) announced the results of its Feasibility Study on the development of an underground mining operation (“Wassa Underground”) at its currently operating Wassa open pit mine (“Wassa Open Pit” and, together with Wassa Underground, the “Wassa Mine”) in Ghana. The Feasibility Study estimates the Wassa Mine will produce an average of 163,000 ounces of gold per annum over its production life with average cash operating costs of $780 per ounce.

Pebblebrook Hotel Trust (NYSE:PEB) has 1.30% insider ownership. In last trading activity company’s stock closed at $46.06. Pebblebrook Hotel Trust (NYSE:PEB) said that, its 8.00% Series B Cumulative Redeemable Preferred Shares will trade ex-dividend, for its quarterly dividend of $0.50, payable on 4/15/15.

On last trading day National Grid plc (NYSE:NGG) moved up 1.42% to close at $65.53. Its volatility for the week is 1.11% while volatility for the month is 1.21%. NGG’s sales growth for past 5 years was -1.10% and its EPS growth for past 5 years was 15.90%. National Grid plc (NYSE:NGG) monthly performance is -3.84%. National Grid plc (NYSE:NGG) announced that they are proposing a substantial cut in the supply rate for their basic service customers. The rate change would have to be approved by the Massachusetts Department of Public Utilities. If approved, the rate change would take effect on May 1