Retail brokerages keep breaking
Traders posting on Twitter and Facebook said they could not log into their accounts on the web or mobile app.
Charles Schwab responded to the complaints on Twitter, referring to the glitch as a "systems issue" and "an internal technical issue."
In a 9:28 a.m. tweet, the firm announced that "Schwab sites experienced issues this morning but are now back online. Clients should be able to log in as normal."
Friday's problems follow similar glitches at TD Ameritrade on Monday.
Customers of that online brokerage reported trouble accessing their accounts. TD Ameritrade said it had been "seeing industry-wide latency issues," according to MarketWatch.
On Twitter, TD Ameritrade attributed the problems to "historic volume and industry issues."
The brokerage glitches come amidst a week of extreme market volatility.
On Monday, the Dow lost more than 500 points, closing at 15,871.35, while the S&P 500 officially tipped into "correction" territory. By Thursday's closing bell, the Dow was back up to 16,655 and crude oil prices saw their biggest one-day gain since 2008.
Here's what people were saying on Twitter:
Business Insider has reached out to Charles Schwab for comment and will update if we hear back.