Martin Shkreli, also popularly known as ‘Pharma Bro,’ announced late Tuesday that he has taken a short position against iBuying real estate company Opendoor Technologies Inc. (NASDAQ:OPEN).

Check out OPEN’s stock price here.

Pharma Bro To Launch Public Due Diligence Against OPEN

In a post on the social media platform X, Shkreli revealed he shorted the stock at $9.36, marking his first trade in the company. He also declared his intention to launch a public due diligence campaign into the firm.

“This is the first trade I've made in the stock,” Shkreli wrote, before detailing his unconventional next steps. “I will be doing diligence calls with former employees, customers, competitors, and hopefully, management too! I will send invites to the calls or anonymous transcripts as appropriate.”

The move signals Shkreli’s intent to not only bet against the company but also to publicly build a bearish case against it.

i shorted $OPEN today at 9.36.this is the first trade i've made in the stock. i will be doing diligence calls with former employees, customers, competitors and ...