Stock Market Power Rankings: Apple Jacks

Each week, I'm ranking the biggest companies that trade on U.S. exchanges based on their size ( market capitalization), momentum (total return over the past year), and recent news. Before we get to the rankings, a quick word on a major player.

One of this past week's biggest winners was Apple (NASDAQ: AAPL). The consumer-tech giant announced its fiscal first-quarter results, and investors were relieved that things could've been worse.

Apple isn't at its best right now. It suffered a 15% decline in iPhone revenue, and since smartphone average selling prices keep inching higher, we're talking about a much larger drop in the number of iPhones sold. Apple also continues to struggle in China, once an important part of the bullish buy thesis for the stock.