Here’s Why CoStar (CSGP) is Among the 10 Fastest Growing S&P 500 Stocks to Buy Now

Jeff Lewis

Mon, May 18, 2026 at 11:17 AM EDT 2 min read

CoStar Group, Inc. (NASDAQ:CSGP) is one of the

10 Fastest Growing S&P 500 Stocks to Buy Now.

On May 14, 2026, CoStar Group, Inc. (NASDAQ:CSGP)’s Apartments.com released its inaugural Apartments.com RentPulse Index, a new quarterly index designed to track the financial and behavioral health of renters across the United States. Unlike traditional rental reports focused primarily on pricing trends, the RentPulse Index combines proprietary Apartments.com and CoStar Group data to measure factors such as affordability pressure, renter behavior, concessions, supply conditions, and demand trends. The first quarter 2026 report highlighted an increasingly bifurcated rental market, with renters in supply-heavy Sun Belt markets benefiting from falling rents and elevated concessions, while renters in constrained coastal and Northeastern markets continue facing rising costs and affordability challenges.

photo by Business-laptop-campaign-creators on Unsplash

Earlier in May, Stephens lowered the firm’s price target on CoStar Group to $42 from $50 while maintaining an Overweight rating on the shares. The firm said it remains constructive on CoStar’s self-reinforcing platform model but noted investor frustration surrounding slower bookings growth despite the company’s sizable organic and inorganic investments.

CoStar Group, Inc. (NASDAQ:CSGP) provides information, analytics, and online marketplace services to the real estate industry across the United States and international markets.

While we acknowledge the potential of CSGP as an investment, we believe certain AI stocks offer greater upside potential and carry less downside risk. If you're looking for an extremely undervalued AI stock that also stands to benefit significantly from Trump-era tariffs and the onshoring trend, see our free report on the best short-term AI stock.

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