https://www.stockcalc.com/blog/BrianD/2018/12/13/nf-energy-saving-nfecnas-and-tandem-diabetes-care-tndmnas-are-biggest-stock-gainers-ytd-on-nasdaq/
NF Energy Saving (NFEC:NAS) and Tandem Diabetes Care (TNDM:NAS) Are Biggest Stock Gainers YTD on NASDAQ