VIVUS, Inc. VVUS +4.75% : VIVUS, Inc. VVUS +4.75% Thursday soared 77.54% higher, moving up US$8.18 to US$18.73 per share. Abnormal trading volume of VIVUS, Inc. was found on February 23 which reached 58.65 million shares, 19 times heavier than usual day trading. Why? Are insiders starting to take huge profits by selling shares or exercising stock options? Academic studies have shown that insiders traditionally make higher investment returns than ordinary investors. Want to find out how they do it?