The move reduces fees on 87 different funds, and 168 total share classes of those funds. The average fee cut is 20% per share class. Vanguard said this is its biggest fee cut ever and will save investors about $350 million this year, based on current asset levels.

Key Takeaways The Vanguard Group on Monday announced the largest management fee cuts in its history.The move will reduce the cost of putting money in 87 exchange-traded funds and mutual funds, Vanguard said.