How did a social network overtake Walmart?

In a little over three years as a public company, Facebook may now be worth more than Walmart.

The question is, will the social network's surge last?

According to Quartz, over the last year, Facebook’s stock has jumped roughly 30% as the broader S&P 500 has barely managed to keep its head above water. The climb has added more than $65 billion to Facebook’s market value, bringing it to more than $236 billion, just above Walmart’s $235 billion.

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