Shares of Zoom Video Communications (NASDAQ:ZM) have been on a tear since the company went public in April. Before the videoconferencing company posted its fiscal first-quarter results on Thursday afternoon, shares were already up 116% from the company's IPO price of $36 and 25% from the $62 price at which the stock closed its first trading day just a few months ago. But there was more where these gains came from: Shares soared 18.4% on Friday, following the company's strong fiscal first-quarter results.

Why is the Street so bullish on Zoom Video? Let's take a look at some of the numbers getting investors excited.

Zoom's videoconferencing platform on a smartphone and computer screen.

Image source: Zoom.

1. 103% revenue growth

Zoom's revenue in its first quarter of fiscal 2020 soared 103% year over year to $122 million, crushing analysts' average forecast for revenue of $112 million.

Revenue growth, management explained, was driven by growth in new customers as well as sales expansion within existing customers.

2. A $0.2 million net profit

While Zoom's $0.2 million net profit in its fiscal first quarter is small, it's a notable improvement from a net loss of $1.3 million in the year-ago period. Zoom's non-GAAP earnings also jumped sharply, rising from a net loss of $0.5 million in the year-ago period to $8.9 million.

3. $22.2 million of cash from operations

Capturing how lucrative Zoom's business model is, the company generated $22.2 million of cash from operations during its fiscal first quarter, up significantly from $2.8 million in the year-ago quarter.

Free cash flow, or cash from operations less capital expenditures, was $15.3 million, up from -$1.1 million in the year-ago quarter.

4. 58,500 customers

Zoom's customers with more than 10 employees increased 86% year over year to 58,500. The number of customers contributing over $100,000 in trailing-12-month revenue increased 120% year over year to 405.

5. A net expansion rate above 130%

Zoom's net dollar expansion rate, or the year-over-year increase in user spend of existing customers over the trailing-12-month period, was greater than 130% for the fourth quarter in a row.

6. Fiscal 2020 revenue between $535 million and $540 million

For the full year of fiscal 2020, management forecasts revenue to be between $535 million and $540 million, well ahead of the $526 million analysts were modeling for.

While Zoom's rapid growth is impressive, investors should tread carefully. The stock now has a wild market capitalization of more than $24 billion, despite the videoconferencing company recording only $331 million in revenue in fiscal 2019.

Editor's note: In a previous version of this article, the author mistakenly said Zoom reported a $0.2 million net loss in its first quarter when Zoom actually a $0.2 million net profit. The author regrets the error.

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.