Two dozen large-cap stocks have more than doubled this year. Two of them can do it again.

It's been a refreshingly good year for most investors. You're probably doing pretty well if you owned one or more of the 24 stocks with market caps north of $10 billion that have more than doubled this year.

Many of the early leaders will likely prove mortal in the coming months. I want to look at two of the names that I think can keep the upticks coming. Palantir ( PLTR -1.78% ) and Celsius Holdings ( CELH 1.11% ) are a couple of the two dozen large-cap stocks to have doubled that I think can repeat the feat through the second half of this year. Let's take a closer look at both market beaters.

1. Palantir: Up 143%

The most valuable company to more than double this year is Palant

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