Glaukos Corporation (NYSE:GKOS – Get Free Report) reached a new 52-week high during mid-day trading on Wednesday . Weiss Ratings reiterated a “sell (d-)” rating on shares of Glaukos in a research report on Friday, July 17th. Citigroup boosted their target price on Glaukos from $175.00 to $188.00 and gave the stock a “buy” rating in a research report on Thursday, July 30th. Finally, William Blair restated an “outperform” rating on shares of Glaukos in a research note on Tuesday, May 26th. Stephens Inc. AR purchased a new position in shares of Glaukos during the first quarter valued at approximately $363,000.