My 3 Top Stocks for 2018

Over 5,000 stocks are traded on the two major U.S. stock exchanges. I own shares of 20 of them, in addition to holding positions in several exchange-traded funds (ETFs). Most of these stocks I held throughout 2017. And most of them were solid winners last year.

One that didn't perform well, though, was Celgene (NASDAQ: CELG). I also replaced a couple of stocks with new choices -- Align Technology (NASDAQ: ALGN) and NVIDIA (NASDAQ: NVDA). My hunch is that these three could turn out to be the top stocks in my portfolio in 2018. I won't be surprised if they also turn out to be among the top stocks in the S&P 500. Here's why.

Skywriting of 2018 with several raised fists in the foreground.
Skywriting of 2018 with several raised fists in the foreground.

Image source: Getty Images.

Align Technology

Align Technology ranked as the best-performing stock of the S&P 500 for 2017. Could it be a repeat winner? It's not out of the question. Demand continues to surge for the company's Invisalign clear aligners. Align Technology set new revenue records every time it reported quarterly results in 2017. I fully expect more of the same this year.

Despite its tremendous growth, Align still only claims around 10% of the addressable orthodontic market. Many patients still use traditional wire-and-metal braces to correct malocclusion (misalignment of teeth). But the word is getting out about Align's clear aligners, which are practically invisible to other people.

The company is also working hard to expand its market. First, Align is developing new aligner technology to address harder-to-treat cases of malocclusion. This could increase the addressable market for Invisalign by around 40%. Align is also experiencing success in international markets, including Europe and Asia.

Smiling woman holding clear aligner
Smiling woman holding clear aligner

Image source: Getty Images.

Invisalign isn't Align's only product, though. The company also supplies clear aligners to SmileDirectClub, an at-home program for affordable, cosmetic teeth straightening. In addition, Align markets a successful line of intra-oral scanners that dentists and orthodontists use. I think sales will continue to grow for these products in 2018, along with sustained momentum for Invisalign.

Celgene

There were a couple of reasons Celgene stock fell nearly 10% in 2017. The big biotech was doing great last year until October, when it announced the failure of a once-promising Crohn's disease drug in a late-stage clinical study. Celgene followed up that bad news with a third-quarter revenue miss and a cut to its full-year 2017 and long-term outlook.

But Celgene remains a great stock with great prospects. The company expects to grow revenue by a compounded annual growth rate of 14.5% through 2020. Adjusted earnings per share should grow by 19.5% annually over the next few years.