3 Stocks Poised to Join the S&P 500 Soon - And They’re Already Rising

Wall Street's exclusive club is about to get three new members. The S&P 500's revolving door is spinning again, and the market is already placing its bets.

The Pre-Announcement Surge

It's the oldest game in finance: buy the rumor. Shares of these three companies have been climbing ahead of the official announcement, proving that index inclusion is still one of the last guaranteed momentum plays left. Forget fundamentals for a day—this is pure mechanics.

Why the S&P 500 Still Matters

In an era of crypto ETFs and meme stock mania, the old benchmarks retain their power. Inclusion triggers billions in automatic buying from index funds and ETFs that track the benchmark. It's a tidal wave of passive capital that lifts all boats—at least, these three specific boats.

The Ripple Effect

The move doesn't just affect the newcomers. Rebalancing means three current constituents get the boot, setting off a quieter but equally predictable sell-off on the other side of the trade. For every winner the index gods create, they make a loser—it's the circle of Wall Street life.

A cynical take? This is finance at its most gloriously predictable. A handful of committee members make a decision, and billions of dollars obediently reshuffle themselves. It's the closest thing the market has to choreography. Now watch the dance.

Key Takeaways

• Carvana, CRH, and Comfort Systems USA will join the S&P 500 prior to the opening of trading on Dec. 22, according to S&P Dow Jones Indices.
• The three stocks will replace LKQ, Solstice Advanced Materials, and Mohawk Industries.

Carvana, CRH, and Comfort Systems USA shares climbed Monday after S&P Dow Jones Indices said the stocks are set to join the S&P 500.

Shares of used car retailer Carvana (CVNA) were up over 10% in recent trading, while construction materials provider CRH (CRH) jumped 6%, and mechanical and electrical services company Comfort Systems USA (FIX) added about 2%. (Read our daily markets coverage here.) 

The three stocks will join the benchmark index prior to the opening of trading Dec. 22, S&P Dow Jones Indices said Friday, as part of its quarterly rebalancing. The companies will be replacing auto parts distributor LKQ (LKQ), specialty materials Maker Solstice Advanced Materials (SOLS), and flooring manufacturer Mohawk Industries (MHK), shares of which were little changed Monday morning.

Why This Is Significant

Joining a major index like the S&P 500 is typically seen as advantageous for stocks, as it exposes them to a wider group of investors and pushes funds tracking the index to add the shares.

Stocks that are added to major indexes like the S&P 500 often benefit from the move, as it may be taken as a vote of confidence in their returns and boost awareness among investors. Index funds that track stocks added to the indexes will also be driven to buy the shares.

With Monday's gains, shares of Carvana and Comfort Systems USA have more than doubled in value in 2025. CRH shares have climbed close to 40% this year so far.

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