It ain't easy to impress Mr. Market these days. A few days ago, Advanced Micro Devices (NYSE:AMD) surpassed every reasonable expectation -- and got taken out behind the woodshed for a solid beating. Rule Breakers pick Polycom (NASDAQ:PLCM) may not have impressed, but it certainly didn't deserve a 17% haircut.

And today, there's storage giant EMC (NYSE:EMC) reporting as hale and sound a quarter as one could hope for. Revenue of $3.52 billion is a respectable 8% sequential uptick and far ahead of management guidance, which pointed to no more than 5% higher sales. Non-GAAP earnings per share of $0.23 represent a 28% quarter-over-quarter jump, putting EMC essentially even with the year-ago profit.

But EMC's shares are 2.8% cheaper after that seemingly impressive report. Life just isn't fair sometimes.

And it's no sector effect this time. Competitors IBM (NYSE:IBM) and NetApp (NASDAQ:NTAP) are outperforming the S&P 500 today with positive returns. Compounding the problem is VMWare’s (NYSE:VMW) unexciting earnings report. EMC still maintains a majority stake in VMWare, so when VMWare doesn’t perform up to its usual high-growth standards, it causes some added pain at its parent company.

Perhaps we're watching investors take some profits and run. After all, EMC gave shareholders a market-beating 38% return on their investment over the last six months. That's pretty exciting for a stock with an average beta, big market cap, and rare price-change revolutions. Now, a 3% discount doesn't exactly make for an ideal buy-in point, but CEO Joe Tucci believes that his company is "strategically aligned with the major technology shifts and well positioned to play a pivotal role in the IT industry for the next decade." That’s a sentiment I can agree with. This stock deserves a second look from any long-term investor who wants to ride the long-term trend toward companies needing to house infinity-minus-one bits of data.

Have any thoughts on EMC’s quarter or on technology in general? Sound off in the comments section below.

Fool contributor Anders Bylund owns shares in AMD, but he holds no other position in any of the companies discussed here. Polycom and VMWare are Motley Fool Rule Breakers selections. Try any of our Foolish newsletters today, free for 30 days. You can check out Anders' holdings and a concise bio if you like, and The Motley Fool is investors writing for investors.