Active Power Set to Join Russell Microcap Index

AUSTIN, TX — (Marketwired) — 06/26/13 — Active Power (NASDAQ: ACPW), manufacturer of uninterruptible power supply (UPS) systems and modular infrastructure solutions, is set to join the Russell Microcap® Index when Russell Investments reconstitutes its comprehensive set of U.S. and global equity indexes on June 28, 2013, according to a preliminary list of additions on .Membership in the Russell Microcap Index, which remains in place for one year, means automatic inclusion in the appropria