We at Insider Monkey have gone over 700 13F filings that hedge funds and prominent investors are required to file by the SEC. The 13F filings show the funds' and investors' portfolio positions as of December 31st. In this article we look at what those investors think of CoreSite Realty Corp (NYSE:COR). CoreSite Realty Corp (NYSE:COR) shareholders have witnessed an increase in hedge fund sentiment lately. COR was in 15 hedge funds' portfolios at the end of the fourth quarter of 2018. There were 12 hedge funds in our database with COR holdings at the end of the previous quarter.