Alphabet ( GOOG 2.16% ) ( GOOGL 2.29% ) , like other tech stocks, traveled through difficult times and better times this year. The stock slipped this spring amid concern about the impact of U.S. import tariffs on corporate earnings. But as President Donald Trump negotiated with other countries, this pressure eased.

The company also faced the challenge of an antitrust suit in the U.S., but a ruling in September averted the worst-case scenario -- and this decision offered Alphabet a significant boost. Since, the stock has gained nearly 50%, and just recently, Alphabet did something it hasn't done in seven years. Is it time to buy this top tech stock? Let's find out.

90% market share

First, though, let's catch up on the Alphabet story so far. This is the company behind somethi

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