NEW YORK (AP) — Activist investor Bill Ackman once again denounced weight loss and nutritional supplements company Herbalife as a pyramid scheme, but Wall Street shrugged off his criticism and sent the company’s stock soaring 25 percent Tuesday.

In a three-hour presentation in New York, Ackman’s focused on Herbalife’s “nutrition clubs,” private settings where Herbalife distributors sell the company’s products — such as weight-loss shakes — and recruit new members.