NEW YORK/LONDON (May 28): Shares of AMC Entertainment switched between gains and losses after hitting a record high in volatile trading on Friday, putting the movie theater chain on track for a weekly gain of more than 100%.

AMC's shares were last up 5.4% at US$27.94 after earlier hitting a high of US$36.72, and on track for their biggest weekly gains since late January. The stock's low for the session so far was US$24.17.