Largest 500 U.S. Companies by Market Cap - 321–340 of 500

A daily-updated ranking highlights the 500 largest american stocks by market cap, making it easy to assess market leaders, track shifts in valuation, and understand how the biggest companies compare over time.

Data updated: Apr 28, 2026, 4:00 PM ET

#NameMarket cap ▼% changeMarket cap (relative)
321 Waters Waters WAT 29.50B ▲ 0.31%
322 United Airlines Holdings United Airlines Holdings UAL 29.34B ▼ 1.64%
323 PPL PPL PPL 29.29B ▲ 0.62%
324 Tapestry Tapestry TPR 29.12B ▼ 1.79%
325 Insmed Insmed INSM 29.09B ▼ 0.75%
326 Casey's General Stores Casey's General Stores CASY 29.00B ▼ 2.46%
327 Hubbell Hubbell HUBB 28.96B ▼ 1.90%
328 Qnity Electronics Qnity Electronics Q 28.85B ▼ 4.34%
329 Revolution Medicines Revolution Medicines RVMD 28.70B ▲ 10.00%
330 FirstEnergy FirstEnergy FE 28.65B ▲ 0.28%
331 Natera Natera NTRA 28.58B ▼ 2.06%
332 CenterPoint Energy CenterPoint Energy CNP 28.21B ▲ 0.53%
333 Xylem Xylem XYL 28.19B ▼ 6.13%
334 Estee Lauder Companies Estee Lauder Companies EL 27.89B ▼ 0.29%
335 Citizens Financial Group Citizens Financial Group CFG 27.69B ▲ 0.33%
336 Reddit Reddit RDDT 27.69B ▼ 7.64%
337 Humana Humana HUM 27.58B ▲ 2.72%
338 Dow Dow DOW 27.40B ▼ 0.22%
339 IQVIA Holdings IQVIA Holdings IQV 26.98B ▼ 2.95%
340 Biogen Biogen BIIB 26.91B ▲ 1.51%