Robinhood co-founder and co-CEO Vlad Tenev speaks onstage during the TechCrunch Disrupt New York event on May perhaps 10, 2016.

Noam Galai | Getty Pictures for TechCrunch

The co-founder of Robinhood took to audio app Clubhouse on Sunday to protect the investment decision platform’s selection to prohibit buying and selling in GameStop and other volatile stocks.

GameStop shares have climbed additional than 1,500% due to the fact the begin of the year, fueled in no modest portion by a wave of retail buyers motivated by the Reddit board WallStreetBets. Such buyers piled into GameStop and other closely-shorted shares, ensuing in big losses for some hedge cash.

Robinhood moved to prohibit investing in a amount of shares, together with GameStop and AMC Amusement, on Thursday. Tenev reported at the time that the selection was aimed at shielding the organization and its clients.

In the session on Clubhouse, Tesla CEO Elon Musk pressed Robinhood’s Vlad Tenev on why the system, a pioneer of fee-free buying and selling, decided to restrict buying and selling very last week. The on-line brokerage firm restricted buying and selling in 13 equities, enabling customers to offer positions but not open new types in certain securities, provoking fury from buyers.

“We experienced no alternative in this situation,” Tenev claimed. “We experienced to conform to our regulatory capital requirements.”

Tenev mentioned Robinhood’s operations group obtained a request at 3:30 a.m. Pacific Time on Thursday from the Nationwide Securities Clearing Corporation. Robinhood and other clearing brokers are needed to satisfy specific deposit necessities from clearinghouses like the NSCC just about every working day. The volume necessary is based mostly on components this sort of as volatility and concentration in specified securities, Tenev claimed.

Robinhood bought a request for a security deposit of $3 billion from the NSCC to back up trades, “an buy of magnitude extra than what it usually is,” Tenev claimed. The business raised an further $1 billion in emergency money from current buyers in an effort and hard work to shore up its stability sheet and enable it to relieve the buying and selling curbs.

“Did a thing it’s possible shady go down listed here?” Musk — who has proven assistance for WallStreetBets on Twitter — questioned Tenev.

“I wouldn’t impute shadiness to it or anything like that,” Tenev responded. “The NSCC was acceptable subsequent to this.”

Robinhood and the NSCC afterwards agreed to reduce the $3 billion quantity down to all around $1.4 billion, but Tenev said his business was however forced to take action to restrict trades.

Tenev’s explanation of the problem echoed a blog site post from Robinhood, in which the firm described it place momentary acquiring constraints on some securities thanks to a tenfold raise in clearinghouse deposit prerequisites.

Requested by Musk no matter whether there would be any even further limits on investing in potential, Tenev mentioned: “I feel there is usually going to be some theoretical limit. We you should not have infinite funds.”

Musk also quizzed Tenev on no matter if Citadel Securities — the premier current market maker in selections in the U.S. – had pushed the business to impose buying and selling boundaries. Robinhood gains a important chunk of its revenues from routing orders to current market makers like Citadel and Virtu. Citadel also assisted infuse shut to $3 billion into Melvin Capital, a hedge fund that bet from shares like GameStop.

“To what diploma are you beholden to Citadel?” Musk asked, to which Tenev replied: “There is a rumor that Citadel or other sector makers pressured us into doing this and that is just false.”

“This was a clearinghouse decision and it was just based mostly on the money specifications,” Tenev added. “From our point of view, Citadel and other market makers weren’t included in that.”

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