GREENWICH, Conn. (AP) — Shares of Blyth Inc. soared more than 20 percent to a four-year high Thursday after the company announced plans to spin off its weight-loss, energy drink and nutritional supplement business through an initial public offering of stock worth up to $175 million.

In addition to the ViSalus business, Greenwich, Conn.-based Blyth, also sells home accessories. The sales are made through house parties, by catalog and online.