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We only allow registered users to use ad blockers. You can sign up for free by clicking here or you can login if you are already a member., Inc. (AMZN), Expedia Inc (EXPE), Zynga Inc (ZNGA): Are These High-Flying Tech Stocks Worth Your Money?

Several growth stocks within the technology sector have richly rewarded their investors in recent months. Stocks including, Inc. (NASDAQ:AMZN), Expedia Inc (NASDAQ:EXPE), and Zynga Inc (NASDAQ:ZNGA) have rallied considerably since the beginning of the year.

At the same time, each of these stock recently released quarterly earnings that left a lot to be desired. Do post-earnings declines represent buying opportunities for Fools? Or should investors get out altogether?

Red-hot stocks, Inc. (NASDAQ:AMZN) shares have steadily climbed since the beginning of 2013, rising 21% up until its second quarter earnings release., Inc. (NASDAQ:AMZN)From a revenue perspective, investors were right to be optimistic., Inc. (NASDAQ:AMZN) racked up $15.7 billion in net sales over the past three months, which represents 22% growth year over year.

Unfortunately, the company was again unable to turn a profit., Inc. (NASDAQ:AMZN) lost $7 million during the quarter, equating to a penny per diluted share.

And,, Inc. (NASDAQ:AMZN) told investors not to expect a profit in the current quarter. Management guidance is for a net operating loss in the third quarter as well.

Expedia Inc (NASDAQ:EXPE), meanwhile, was a $45 stock one year ago today.  Shares then rose to $65 up to the day of its earnings announcement.  That means the stock racked up impressive 44% gains over the past 52 weeks.

However, Expedia Inc (NASDAQ:EXPE)’s shares collapsed upon releasing earnings, which showed the company missed analyst expectations on both revenue and earnings.  The company posted $0.64 per share on profits of $1.21 billion.  Estimates called for $0.79 in EPS and $1.26 billion in revenue.

Overall, revenue grew 16% from the year-ago period, but higher costs drove profits down 16% year over year.  The market reacted extremely negatively to the report; Expedia Inc (NASDAQ:EXPE) shares lost as much as a quarter of their value in after-hours trading.

Zynga Inc (NASDAQ:ZNGA)’s stock price increased nearly 50% since the start of the year, including a nearly 7% rally on the day before its evening earnings announcement. Unfortunately, the optimism was quickly erased when the stock sold off into the double-digits in after-hours trading.

All told, Zynga Inc (NASDAQ:ZNGA)’s second-quarter revenue fell 31% versus the same period a year ago, and bookings collapsed 38% year over year. Not surprisingly, the company posted a net loss, of $16 million.

Zynga Inc (NASDAQ:ZNGA) raised controversy when it announced, along with its quarterly results, that it would not further explore online gambling. Many optimistic analysts had pinned their hopes on this concept. Shares plunged 12% immediately after the earnings results, and it’s not hard to see why: Zynga is rapidly shrinking.

Over the past 52 weeks, Zynga Inc (NASDAQ:ZNGA) has hemorrhaged users. One year ago, the company held 72 million users. As of this quarter, that figure is down to 39 million, which represents a 45% drop-off in Zynga’s customer base.

At some point, the future needs to become the present

The buy case for, Inc. (NASDAQ:AMZN) has been for years, and continues to be, that at some point down the road, the company will flip its margins and become massively profitable. This is the mantra that gets repeated quarter after quarter, when Amazon reports little to no profitability.

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