Between Sept. 11 and Dec. 10, Apple insiders have sold US$54.87 million in shares, while others have purchased US$1 million worth, accordingto Pennystocksinsiders.com.

Apple recently announced the iPhone 5 will be available in China on Friday, December 14. By the end of Monday’s trading, shares of Apple ended lower by US$3.43 (or -0.64%) to US$529.82. Pennystocksinsiders.com thinks “that it is a clever way to check if insiders in Apple are starting to buy more company shares.”