New York Democratic Rep. Alexandria Ocasio-Cortez is under investigation by the U.S. House Ethics Committee.

On Wednesday, the committee confirmed in a statement that they were investigating the Congresswoman after an undisclosed matter was referred to them by the Office of Congressional Ethics on June 23. The committee did not disclose why they were investigating Ocasio-Cortez.

"The mere fact of a referral or an extension, and the mandatory disclosure of such an extension and the name of the subject of the matter, does not itself indicate that any violation has occurred or reflect any judgment on behalf of the committee," the committee said in a statement.

The committee said it would announce its “course of action” after the 118th Congress convened.

“The Congresswoman has always taken ethics incredibly seriously, refusing any donations from lobbyists, corporations, or other special interests," the lawmaker's spokesperson said in a statement, USA Today and Forbes reported. "We are confident that this matter will be dismissed.”

According to its website, the Office of Congressional Ethics, established in March 2008 by the U.S. House of Representatives, is a nonpartisan, independent entity that reviews misconduct allegations against House members and its staff.

The decision by security markets to restrict trading on stocks like GameStop sparked a rare moment of unity between conservatives and progressives on Capitol Hill Thursday.

Lawmakers from across the political spectrum — from the left-wing progressive House caucus known as "The Squad" to right-wing Senators who identify as "Constitutional conservatives" — skewered platforms like Robinhood and TD Ameritrade, accusing them of siding with Wall Street elitists instead of Middle-Class America.

Rep. Rashida Tlaib, D-Michigan, a progressive Democrat and member of "The Squad," called for House Democrats to investigate Robinhood's decision to halt trading on GameStop stock.

"They're blocking the ability to trade to protect Wall St. hedge funds, stealing millions of dollars from their users to protect people who've used the stock market as a casino for decades," Tlaib said.

Rep. Alexandria Ocasio-Cortez, D-New York, a fellow "Squad" member and a member of the House Financial Services Committee, said she would support an investigation.

"We now need to know more about @RobinhoodApp's decision to block retail investors from purchasing stock while hedge funds are freely able to trade the stock as they see fit," she said.

Ocasio-Cortez's tweet prompted a response from Sen. Ted Cruz, R-Texas, who said he "fully" agreed.

It's rare to see Ocasio-Cortez and Cruz reach an agreement on social media. The two often spar on Twitter on topics like the Paris climate agreement and the pro-Trump riot at the U.S. Capitol.

Robinhood — a trading platform that says it aims to "democratize" market trading — announced on Thursday that it was restricting trades on GameStop, BlackBerry and several other stocks that have seen unsual activity in recent days due to "recent volatility."

The meteoric rise of GameStop stock was fueled by amateur or part-time traders who banded together on social media and used apps like Robinhood to spoil Wall Street hedge funds' bets that the retailer's stock would tank. Hedge fund investors who bet against GameStop lost billions of dollars this week alone.

The decision is also causing the New York attorney general to investigate.