I bought 100 shares of XYZ(January 2017) at $1. The stock then dropped to .50c over the next 12 months. I decided to average down and buy 50 more shares a year later on (January 2018) at .50c, totaling 150 shares. The stock price then moved up in March 2018 to .70c. I decided to reduce my holding to 100 shares, so I sold 50 shares at .70c.

Is that a wash sale?