A stock market index that tracks the performance of roughly 2,000 publicly traded U.S. companies with smaller market values, representing the broader small-cap segment of the market. It matters to investors because it acts like a thermometer for smaller companies—used as a benchmark to compare fund performance, guide portfolio allocation, and gauge economic or market trends affecting growth-oriented, higher-risk firms.
russell 3000® indexfinancial
A broad stock market index that tracks the performance of about 3,000 publicly traded U.S. companies of all sizes, acting as a wide-ranging snapshot of the U.S. equity market. It matters to investors because it serves as a common yardstick for the overall market’s health and is the basis for many index funds and investment strategies—think of it as a single basket that shows how the whole U.S. stock market is doing.
russell 1000® indexfinancial
A stock market index that tracks the performance of the 1,000 largest publicly traded U.S. companies by market value, the Russell 1000® gives a snapshot of how big-cap and many mid-cap businesses are doing as a group. For investors it matters because the index acts like a large shopping cart of major stocks—used as a benchmark for fund performance, a basis for index funds and ETFs, and a quick gauge of broad market health and investor risk exposure.
ftse russellfinancial
FTSE Russell is a global index provider that creates and maintains lists (indexes) showing how groups of stocks perform, similar to a scoreboard that ranks companies by size, sector and trading activity. Investors use these indexes as benchmarks and as the basis for investment products like index funds and ETFs, so when a stock is added or removed it can trigger buying or selling that affects its price and liquidity.
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WESTLAKE VILLAGE, Calif.--(BUSINESS WIRE)--
Energy Vault Holdings, Inc. (NYSE: NRGV) (“Energy Vault” or the “Company”), a global leader in sustainable grid-scale energy storage and AI compute infrastructure solutions, today announced that they have joined the Russell 2000® Index following the conclusion of the 2026 Russell indexes annual reconstitution, effective today, Monday, June 29, 2026 at market open.
The June reconstitution of the Russell US indexes captures up to the 4,000 largest U.S. stocks as of April 30, ranking them by total market capitalization. Membership in the Russell 3000® Index, which remains in place for six months under the semi-annual reconstitution schedule beginning in 2026, means automatic inclusion in the large-cap Russell 1000® Index or small-cap Russell 2000® Index as well as the appropriate growth and value style indexes. FTSE Russell determines membership for its Russell indexes primarily by objective, market-capitalization rankings and style attributes.
Russell indexes are widely used by investment managers and institutional investors for index funds and as benchmarks for active investment strategies. According to data as of the end of June 2025, about $12.2 trillion in assets are benchmarked against the Russell US indexes, which belong to FTSE Russell, the global index provider.
About Energy Vault
Energy Vault® develops, deploys and operates utility-scale energy storage solutions designed to transform the world’s approach to sustainable energy storage. The Company’s comprehensive offerings include proprietary battery, gravity and green hydrogen energy storage technologies supporting a variety of customer use cases delivering safe and reliable energy system dispatching and optimization. Each storage solution is supported by the Company’s technology-agnostic energy management system software and integration platform. Unique to the industry, Energy Vault’s innovative technology portfolio is designed to deliver customized short, long and multi-day/ultra-long duration energy storage solutions to help utilities, independent power producers and large industrial energy users significantly reduce levelized energy costs while maintaining power reliability. Since 2024, Energy Vault has executed an “Own & Operate” asset management strategy developed to generate predictable, recurring and high margin tolling revenue streams, and position the Company for continued growth in the rapidly evolving energy storage asset infrastructure market.Please visit www.energyvault.com for more information.
