Russell 1000 Index (RUI)

NYSE Session Highlights: Top Gainers by Percentage

As of 19 Jun, 2026, the NYSE session saw a strong lineup of outperformers, led by Entegris Inc (NYSE:ENTG), which emerged as the top gainer of the day. The stock last traded at 178.770, rising 21.430 or 13.62%, with trading volume of 5,928,113 shares. Entegris Inc (NYSE:ENTG) commanded a market capitalisation of 19,815.45M, reflecting solid investor interest.CarMax Inc (NYSE:KMX) followed, closing at 53.660, up 13.14 or 6.230. The stock recorded 7,325,746 shares in turnover, supported by a market capitalisation of 12,091.77M. Vail Resorts Inc (NYSE:MTN) also posted a strong performance, finishing at 14.850, up 11.43%. Although volumes were relatively light at 2,516,018 shares, the company maintained a sizeable market capitalisation of 8,486.21M. In the Technology, Corning Incorporated (NYSE:GLW) advanced 11.13 to 19.520, with 22,163,928 shares traded and a market value of 142,124.01M. Rounding out the top five gainers, JetBlue Airways Corp (NYSE:JBLU) closed at 5.680, gaining 10.72%. The airline saw robust activity with 40,319,218 shares changing hands, lifting its market capitalisation to 1,826.52M.

The Russell 1000 Index (RUI) is a key stock market index in the United States, maintained by FTSE Russell. It comprises the largest 1,000 companies in the Russell 3000 Index, representing approximately 92% of the total market capitalization of US stocks. Serving as a primary benchmark for US large-cap equity performance, the index is representative, liquid, and tradable. Investment managers use the Russell 1000 to benchmark portfolios with significant size and liquidity. The index offers optimal diversification across various sectors, providing a comprehensive reflection of the broader US economy. Investors seeking exposure to large-cap US equities often turn to the Russell 1000 as a reliable indicator of market trends and economic health. Its methodology ensures that companies are selected based on market capitalization, liquidity, and sector representation, making it an essential tool for portfolio construction, risk management, and performance analysis. The Russell 1000 Index covers multiple industries, from technology and healthcare to financial services and consumer goods, offering balanced exposure that aligns with the overall market structure. For those looking to invest in a tradable vehicle that mirrors the index, a Russell 1000 ETF provides an accessible way to gain diversified exposure to these top US companies. By tracking the performance of the index, the Russell 1000 ETF allows both institutional and retail investors to participate in the growth potential of large-cap US equities, benefiting from broad market coverage, transparency, and cost-efficient investment management. As a cornerstone for US equity investment, the Russell 1000 and related ETFs play a critical role in portfolio strategy, helping investors capture market trends, achieve sector balance, and maintain alignment with long-term growth objectives in the US financial markets.