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. s