- Sen. Elizabeth Warren lambasted the Securities and Exchange Commission on Thursday, blaming the agency and its failure to act for the blitz of market speculation.
- "We need an SEC that has clear rules about market manipulation and then has the backbone to get in and enforce those rules," the Massachusetts Democrat said.
- Warren spoke to CNBC as traders took to Reddit and Twitter to protest Robinhood's move to curb trading in GameStop and AMC Entertainment.
Sen. Elizabeth Warren lambasted the Securities and Exchange Commission on Thursday for the regulator's failure to take action after a dayslong blitz of market speculation.
"We need an SEC that has clear rules about market manipulation and then has the backbone to get in and enforce those rules," Warren said. "To have a healthy stock market, you've got to have a cop on the beat."
"That should be the SEC," she added. "They need to step up and do their job."
The SEC did not respond to CNBC's request for comment.
The Massachusetts Democrat joined CNBC after wild stock moves prompted popular trading app Robinhood to restrict access to the high-flying names at the center of the controversy.
Warren, a longtime critic of Wall Street, spoke to CNBC's "Closing Bell" as individual traders took to Reddit, Twitter and other social media platforms to protest Robinhood's move to curb trading in stocks like GameStop and AMC Entertainment.
But Warren made clear that she isn't a big fan of Robinhood, either.
Robinhood and similar firms, which offer incentives to join while forcing customers to sign arbitration clauses, don't help create healthy market conditions, she said.
Those arbitration clauses, she said, protect Robinhood "if it turns out that [it] really did cheat you. It'll never be made public, there will be very little that you can do about."
The public outrage toward Robinhood came after the California-based brokerage announced earlier on Thursday that it would bar customers from buying additional shares of companies including GameStop and move theater operator AMC Entertainment. It still allows customers to sell those stocks from their current portfolio.
Robinhood announced soon after Warren's interview that it will allow a limited amount of trading in those volatile stocks on Friday.
Investors on the irreverent WallStreetBets Reddit led an effort to "squeeze" short sellers to cover their bets in such stocks and, as a result, have sparked a frenzy of volatile trading in recent sessions. Many of those retail investors sparked the short squeeze through Robinhood's popular trading app.
Video game retailer GameStop is up about 200% so far this week, AMC has risen 145% and headphone maker Koss, another "squeeze" target, has surged a whopping 1,100%.
Robinhood's decision, which it says was motivated by "extraordinary volatility in the markets," sparked criticism from both sides of the political aisle.
For her part, Warren said she is skeptical of a narrative that would relate the current trading to a classic "David versus Goliath" story that pits a scrappy group of retail investors against a colossal, hedge fund empire.
"That's the problem: How do you know who's manipulating the stock at this point?" she asked. "Are you entirely sure that there aren't wealthy people on both sides? That hedge funds haven't moved in on the side of the people who bid up the price of GameStop?"
Rep. Ro Khanna, D-Calif., a progressive who represents Silicon Valley, called for "more regulation and equality" and questioned the fairness of preventing individuals from buying.
"While retail trading in some cases, like on Robinhood, blocked the purchasing of GameStop, hedge funds were still allowed to trade the stock," Khanna said.
By buying GameStop or AMC equity or call options, retail investors have forced investors betting against the stock, known as short sellers and oftentimes hedge funds, to cover their positions by buying back shares in an effort prevent further losses.
When this occurs en masse, it can lead to a feedback cycle and a spike in a stock's price.