The companies took steps Thursday to curtail trading in several high-flying stocks, including GameStop and AMC.
TD Ameritrade Holding Corp., Morgan Stanley’s E*Trade and Fidelity were also affected.
BlackRock revealed new climate commitments earlier this week.
Robinhood had issues with crypto trading, while some Vanguard users could not access their accounts.
Mike Pyle was most recently BlackRock’s chief investment strategist.
Investors keep gravitating toward index-tracking funds.
Vanguard Total Stock Market Index Fund includes both a mutual fund and an exchange-traded fund.
The problems started shortly after 6:30 a.m. in New York.
Net flows to Vanguard’s funds slowed in 2020 as rivals continue to roll out similar products.
Clients complain they’re struggling to get quick help when their funds are disappearing.