A X-bagger refers to a stock that has multiplied in value by X times. In this case, a 7-bagger is a stock that has increased by 600% -- and that's exactly what Palantir Technologies (PLTR 2.53%) has done over the past 12 months. That's a legendary run for a company that started off with a market cap of around $54 billion beforehand, and one that makes it a prime buy-and-hold candidate.

Although Palantir's recent stock price surge is impressive (to put it lightly), it doesn't mean too much for people who haven't owned any shares over that span. For people considering investing in the stock, this run may bring caution, with the worry that a pullback is seemingly inevitable.

With the next five years in mind, does Palantir have what it takes to continue its explosive growth? Although nobody can say for certain, there are a few factors in play that can help us get an idea of the likelihood.

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Palantir's current valuation could limit its explosive upside

Anytime I've talked about Palantir's stock recently, I've pointed out just how expensive the stock is by virtually any standard. It's important to know at any time, but especially if you're wondering about its chances for explosive growth.

At the time of this writing, it's trading at 274 times its expected earnings for next year and 98.5 times its expected revenue. Its enterprise value (market cap + debt – cash) is currently trading around 97 times its forward expected revenue. For perspective, those are more than 6.5 and 4.5 times higher than Nvidia, respectively, which is also considered very expensive by most standards.

PLTR PE Ratio (Forward) data by YCharts

In this case, Palantir's forward P/E ratio is what's important because it shows that investors have already priced in a lot of future growth. There's really no way to justify the levels Palantir is trading at, but if you're approaching the stock expecting explosive growth in the next five years, know that it would take years of unprecedented and flawless execution to pull it off.

Can it happen? Sure. But that largely depends on your definition of "explosive growth." If you're expecting more short-term 600% gains, it's probably not a realistic outlook from this point.

Palantir impressed with its second-quarter financials

Palantir's impressive financial growth over the past year is part of the reason for its stock price growth. (Emphasis on "part" because it hasn't necessarily justified this much of a surge.)

In the second quarter (Q2), its revenue hit $1 billion for the first time in company history. Its U.S. government revenue made up the bulk of it, growing 53% year over year (YOY) to $426 million. However, the growth of its U.S. commercial segment was the most impressive, growing 93% to $306 million.

PLTR Revenue (Quarterly) data by YCharts

Palantir's U.S. commercial segment will likely be its fastest-growing segment for the near future, and its CEO, Alex Karp, predicts that the company can increase its U.S. revenue tenfold in the next five years. Even if it's able to accomplish this, its current valuation with that future revenue would still be awfully expensive.

Approach Palantir with a long-term mindset

The stock market behaves irrationally all the time; that's just what it does. So, strictly looking at financials and saying Palantir's stock can't experience more explosive growth in the next five years isn't a guarantee of how things will play out.

That said, I would caution against approaching the stock with those expectations. If anything, I would invest in Palantir, planning to hold onto the stock for quite some time because high volatility seems inevitable.

A great approach would be to dollar-cost average instead of investing a lump sum at its current price. By dollar-cost averaging, you can gradually acquire shares, while protecting yourself against sharp pullbacks or buying in at overinflated levels.