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Opendoor surges after trading firm Jane Street reveals 5.9% stake

Shares in retail darling Opendoor Technologies are 8% higher in early trading on Thursday after proprietary trading firm Jane Street revealed a 5.9% stake in the company in a new filing, equivalent to beneficial ownership of more than 44 million shares. At current prices, that’s a position worth $390 million and change.

Many Opendoor bulls are cheering this announcement as vindication from a major institution and a material positive catalyst for the online real estate company. The reality is much less clear and considerably more nuanced. Jane Street is a firm that specializes in market-making and holds a 5% stake or more in 221 US publicly traded securities, per Bloomberg data. It is impossible to know what Jane Street’s true net Opendoor exposure is, since its options positions are not disclosed. No one but Jane Street knows that.

If we had to make an educated speculation, this stock position is much more likely to be a hedge related to calls Jane Street may have sold on Opendoor than it is a plain vanilla expression of optimism on the company’s prospects.

(There is a certain irony that, in this scenario, traders’ reaction to the revelation of a hedge serves as something that immediately makes that hedge more useful!)

The stake is owned by a number of different Jane Street Group subsidiaries. Jane Street Capital reported owning about 3.2 million shares; Jane Street Global Trading reported owning 17.2 million shares; while Jane Street Options, LLC, was reported as the beneficial owner of the bulk of the stake, equivalent to 23.6 million shares. A little over one-third of the stake, 15.5 million shares, were reported as “acquirable through conversion of convertible bonds held.”

Opendoor’s stock has whipsawed in recent days as large shareholders have exited some of their positions. Indeed, just yesterday it came to light that Access Industries, one of Opendoor’s top shareholders, had sold nearly $100 million of OPEN on Tuesday.

Separately, data out yesterday revealed that “sales of newly built homes rose a much larger-than-expected 20.5% in August compared with July,” per CNBC, which might have contributed to positive sentiment on the stock, which gained 16% yesterday.

As of 5 a.m. ET, the stock was the ninth-most-traded in the United States, with heavier volumes (in dollar terms) than tech giants Oracle, Google, and fellow retail favorite Palantir.

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