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Tempus AI CEO Eric Lefkofsky.
(Getty Images)

Tempus AI jumps after hit from short seller’s report

The stock is up more than 90% this year.

Matt Phillips

Shares of Tempus AI, an unprofitable vendor of cancer screening tests that also licenses data for use in drug discovery, soared on Monday, erasing much of the loss it suffered after a short seller released a searing analysis of the stock last week.

Since debuting less than a year ago, the shares have become something of a favorite of retail traders, as well as a target of short sellers. More than 20% of the company’s float is in the hands of shorts.

One of those shorts, Spruce Point Capital, released a report on Wednesday saying “investors should focus on its aggressive accounting, financial engineering, [and] related party dealings,” which knocked the stock down nearly 20%.

Tempus declined to comment on the report and said it “remained focused on delivering shareholder value, taking advantage of the enormous opportunity of bringing AI to healthcare.” The stock is up more than 90% year to date.

But the surge in Tempus shows the risks of short sellers directly confronting a favorite of often tribal retail stock traders, who can react to short sellers’ critiques of companies by rallying each other to hold the shares rather than selling on potential risks that the shorts are spotlighting.

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SpaceX gets a wave of bullish ratings from Wall Street analysts

SpaceX received more than a dozen positive analyst calls on Tuesday — including from major Wall Street banks — as they initiate coverage on Elon Musk’s space and AI company.

SpaceX went public on June 12 at a $2.2 trillion valuation, the largest debut in history. While the company hasn’t yet posted a profit, it seems to have convinced Wall Street that it will get there and grow its valuation on the way.

Of the at least 17 analysts that gave a rating on Tuesday, all but one gave it a “buy” or “outperform” rating. MoffettNathanson was "neutral."

The ratings come as SpaceX joined the Nasdaq 100 index, a benchmark tech-heavy basket of companies that underpins millions of portfolios. The inclusion adds built-in demand for the stock from index funds and ETFs.

Still, SpaceX fell more than 5% on Tuesday amid a broader sell-off, and is currently effectively flat from its opening price of $150 a share.

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