Pinterest (NYSE:PINS) surged 36% in Friday's trading as the company beat both revenue and earnings estimates. Heightened interest in the platform and growth outside of the United States got the market's attention.

However, the higher stock price also forces investors to reevaluate the company. Should they start building their positions in Pinterest stock or wait for a pullback? Let's examine the company's financials and its business to see whether it remains a buy for new investors.

The blowout quarter

Pinterest showed resilience in the face of some major headwinds. Revenue of $272.5 million came in only 4% higher year over year. However, that top line figure easily topped the analysts' consensus of approximately $255 million.

Moreover, the non-GAAP loss of $0.07 per share also beat expectations by $0.06 per share. The company lost $0.06 per share in the year-ago quarter.

But it was likely the increase in international revenue, which rose by 72%, that drove the stock's surge. Investors also cheered the global monthly active user (MAUs) growth of 39% with international markets up 49%.

What these numbers mean for investors

The recent rally is welcome news after Pinterest launched its IPO in April 2019 at $19 per share. After initially rising to almost $37 per share last year, the stock fell to a low of just $10 in March during the coronavirus sell-off. Now, shares have moved to $35 per share as of this writing, approaching their previous all-time high.

PINS Chart

Data by YCharts.

Pinterest's results are strong given the 32.9% contraction in U.S. gross domestic product during the second quarter and the broader decline in ad spending. However, since the company does depend on ads for revenue, the broad market downturn negated most of the benefits from its growing user base.

For example, in the United States, a 13% increase in MAUs still led to a 2% drop in revenue. Moreover, despite the spike in international MAU growth, non-U.S. revenue only accounts for 15% of the top line.

Interestingly, the downturn may have helped the stock. In the earnings release, CEO Ben Silbermann noted, "In these tough times, we’re seeing more and more people rely on Pinterest to cook at home, plan kids activities and set up a home office. Businesses are helping them turn their ideas into reality as people are increasingly discovering and buying products on Pinterest."

Hence, given the rising case numbers for COVID-19, the increased MAU growth should persist near term.

Woman looking away and thinking as she holds her smartphone.

Image source: Getty Images

Why investors should still consider Pinterest

However, despite these concerns, Pinterest might remain the best growth stock in the social media space.

First, Pinterest dominates a special niche in social media where competing platforms have yet to gain steam, even for massive competitors such as Facebook. Also, thanks to the recent quarterly growth, the large base of 416 million MAUs results in powerful network effects for Pinterest.

The stock trades at a price-to-sales (P/S) ratio of 16.7. That comes in higher than its larger peers, but growth comes more easily to smaller platforms like Pinterest, which has a market cap of just $20 billion. Management reported approximately 50% revenue growth for July, and the company is guiding for third-quarter growth in the mid-30% range on a year-over-year basis.

Pinterest has other advantages too. Twitter, which trades at 8.6 times revenue, may be cheaper, but its second-quarter report included a 19% revenue decline and a complete reversal on the bottom line from a $0.05 per share profit last year to a $0.16 per share loss. Twitter also lags behind in revenue durability due to a heavy reliance on brand advertising.

While it may not be a cheap stock, Pinterest's leadership within its corner of the social media world and the bullish outlook for 2020 bode well for the company.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.