Apple showed a strong day on Wall Street. The Cupertino company (NASDAQ:AAPL) saw its stock bump up 7 percent by the market’s close, ending at $565.73 from the yesterday’s close of $527.68. It was the biggest gain in months for the iPhone maker. Its stock has been struggling since the release of its iPhone 5 on Sept. 7. Since then, Apple has struggled with news of product shortages and a major executive shake-up. Related: IPhone supply woes sink Apple into bear territory Apple troubles…