StockNews.com began coverage on shares of Sientra (NASDAQ:SIEN – Free Report) in a report released on Thursday. The firm issued a hold rating on the medical instruments supplier’s stock. Sientra Stock Performance NASDAQ:SIEN opened at $2.22 on Thursday. Sientra has a fifty-two week low of $1.25 and a fifty-two week high of $8.17. The company […]