It's not hard to see that artificial intelligence, or AI, is a massive opportunity. That's why I want exposure to AI stocks in my portfolio.

The problem is that I'm a value investor at heart and am best suited at evaluating bank stocks, real estate investment trusts, and consumer goods businesses. Fast-growing tech stocks just aren't in my wheelhouse enough for me to feel confident picking individual AI stocks.

For that reason, I'm taking the exchange-traded fund, or ETF, route when it comes to AI investing. There are several AI ETFs in the market, including a few that are actively managed. But not all are in the same boat. Here's one actively managed artificial intelligence ETF I'm planning to add to my portfolio in the very near future, and one that I'd pass on.

Here's the artificial intelligence ETF I'm buying in February

In my own portfolio, I'm planning to buy shares of the Ark Autonomous Technology & Robotics ETF (ARKQ 0.24%), offered by Cathie Wood's Ark Invest. It is an actively managed ETF, which means Wood and her team allocate capital in stocks they think will beat their benchmark index. It also has a 0.75% expense ratio, which is reasonable for an actively managed fund like this.

Perhaps my favorite thing about the Ark Autonomous Technology & Robotics ETF is that it primarily owns under-the-radar AI stocks, not just the megacap names that I already have a lot of exposure to through the Vanguard S&P 500 ETF (VOO -0.53%), which I already own. In fact, because of their massive size, the Magnificent Seven tech stocks make up more than one-third of the S&P 500 right now.

On the other hand, although the Ark fund's largest holding is Tesla (TSLA 1.08%), a Mag 7 stock, the rest of its largest holdings are not. Its next five holdings are Kratos Defense & Security (KTOS -0.83%), Teradyne (TER 0.62%), Rocket Lab USA (RKLB 1.82%), Archer Aviation (ACHR 1.94%), and Iridium Communications (IRDM 1.16%).

If there are names you haven't heard of, that's the point. The Ark Autonomous Technology & Robotics ETF is a great way to look beyond the big names in AI and get significant exposure to smaller, high-potential companies.

One AI ETF I'd avoid

The artificial intelligence ETF I'd stay away from is the Roundhill Generative AI & Technology ETF (CHAT -0.41%). The ETF is the first to focus specifically on generative AI technology, and it is an actively managed ETF, just like the Ark ETF.

To be fair, this isn't a bad ETF. The expense ratio of 0.75% is in line with other actively managed ETFs, and its top holdings are definitely the leaders in generative AI technology.

The problem is that, at least for now, the ETF's holdings are very similar to the composition of the Nasdaq 100 benchmark index. Here's a look at the top five holdings of the Roundhill ETF and those of the Nasdaq 100-based Invesco QQQ ETF (QQQ -0.14%), as of the latest information.

Data sources: Roundhill, Invesco fund information sheets.

Here's the key point: Three of the top five investments are the same in both funds' portfolios. And for context, Meta is the No. 7 holding in the Nasdaq 100. In simple terms, there is a lot of overlap between the two funds.

Again, the Roundhill Generative AI ETF isn't necessarily a bad product. It's just too similar to the holdings of the Invesco QQQ ETF, which has a much lower 0.20% expense ratio. So if your goal is exposure to the largest generative AI stocks, there's a solid case to be made that simply investing in the Nasdaq 100 is the better way to go.