https://www.stockcalc.com/blog/BrianD/2018/12/17/parker-drilling-pkdnys-and-sanchez-energy-snnys-are-biggest-stock-decliners-ytd-on-nyse/
Parker Drilling (PKD:NYS) and Sanchez Energy (SN:NYS) Are Biggest Stock Decliners YTD on NYSE