The billionaire shareholder activist isn’t buying a lot — but it’s enough to keep company watchers wondering whether he might challenge Lionsgate’s management at the September 13th investor meeting in Toronto. He bought 53,963 shares this week at about $7 a share, raising his stake slightly to 33.2%, he says in an SEC filing. The latest purchases follow the 702,877 shares he bought last week, his first purchase of the studio’s stock since July 2010. It’s unclear whether he’ll be able to cast votes with his new holdings. Lionsgate set August 5th as the record date — purchases after then typically can’t be voted. But Canadian law allows for some exceptions. Still, Icahn could offer other candidates for the board at any point up to the meeting. Icahn, who has criticized Lionsgate’s spending and strategy, nominated five board candidates last year. All lost. Lionsgate said last week that it is running the same 12-director slate that was elected last year.