Vanguard, the low-cost investing pioneer, will now charge $100 to close an account — unless you’re a multimillionaire

Vanguard, the country’s second-largest financial-advisory firm, will start charging brokerage-account holders a slew of new fees starting July 1 — including a $100 processing fee to close an account or transfer assets to another firm. That fee, however, will be waived for customers with at least $5 million in assets.