The artificial intelligence (AI)-powered software company has a great business model, which is a feature behind all stocks that are big winners over the long term.

This top US artificial (AI) stock has soared nearly 200% this year! Let's take a look at whether Nvidia shares are a buy.

On top of this, Nvidia has two major catalysts on the horizon, events that could be crucial for the direction of the stock price. Should you get in on this top stock ahead of the action? Let's find out.

All of this means that there are some good reasons to buy Nvidia right now, ahead of the earnings report. However, if you'd rather wait -- or need to wait to free up cash to invest -- don't worry. An investment after the report or even further down the road still may score a big win for your portfolio over the long haul.