Billionaire Investor Bill Ackman Is Betting Against Tesla -- At Least for Now
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Billionaire investor Bill Ackman made a name for himself in the 21st century through activist short-selling. But these days, Ackman's fund, Pershing Square Capital Management, tends to own a dozen stocks...
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July 3, 2025
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Billionaire investor Bill Ackman made a name for himself in the 21st century through activist short-selling
But these days, Ackman's fund, Pershing Square Capital Management, tends to own a dozen stocks at any given time, usually on the long side
Pershing has never owned Tesla (TSLA 0. 11%), the electric car and robotaxi company run by CEO Elon Musk
Ackman is not actively shorting the stock or purchasing put options on the name, either
But Pershing launched a new position earlier this year, which is now the fund's largest holding
And it's essentially a bet against Tesla -- at least for now
The robotaxi revolution has begun Robotaxis with full-self-driving (FSD) capabilities are beginning to pop up in some of the largest cities in the country
After years of experts predicting that FSD would one day be ubiquitous, it feels the industry is now at a tipping point
Image source: Getty Images
Tesla plans to play a big role in the FSD revolution
Musk has been talking it for years, and Tesla recently launched its first batch of autonomous robotaxis in Austin, Texas, in what essentially looks a soft launch
Tesla's first robotaxis are geo-fenced, meaning they are only operating in parts of Austin, and the vehicles are also being overseen by humans remotely
But investors think this could be the beginning of a new robotaxi fleet that could potentially cut into the ride-hailing
Speaking of ride-hailing, Pershing earlier this year acquired a large stake in the ride-hailing giant Uber (UBER 0. 95%), which was Pershing's largest equity holding at the end of the first quarter, consuming 19% of the portfolio
In a post on X in February, Ackman praised the work of Uber's CEO Dara Khosrowshahi, who "has done a superb job in transforming the company into a highly fitable and cash-generative growth machine. " Ackman called Uber one of the highest-quality es he's seen in the market that could be purchased cheap compared to what it's really worth
While the billionaire investor may not have said it, a big bet on Uber is currently a big bet against Tesla
That's because both companies are banking on robotaxis to carry their future es, albeit in different ways
Tesla is building FSD electric vehicles and planning to launch its own robotaxi fleet
In a re note in late May, Wedbush analyst Scott Devitt said, "We continue to believe Tesla Robotaxi serves as a long-term threat to Uber's model
The initial launch may ramp slowly initially but 'gradually then suddenly' is a quote investors may be prudent to contemplate. " Not only could a robotaxi fleet without the cost of human labor challenge Uber, but Uber itself is betting on robotaxis with its plan to build a robust network of partners
The company has already forged partnerships with Waymo, Pony
Ai, and WeRide, among others
The plan is to launch autonomous vehicles from partners through its network
In a prior presentation, Uber believes the autonomous opportunity could be worth more than $1 trillion in the U
Furthermore, management believes the company is uniquely positioned to take advantage of the autonomous wave because companies building these vehicles will need a partner
Uber's massive platform and scale, operational capabilities, and experience on the regulatory side make it an obvious choice
Is Tesla a potential partner or future competitor
In its presentation, which is from February of this year, Uber lists Tesla as a potential partner
Earlier this year, some media outlets reported that Tesla was contemplating an acquisition of Uber
However, Musk has shut down those rumors, saying there is "no need" to buy Uber because Tesla has plenty of vehicles it can use for its fleet
Additionally, Musk envisions a scenario where Tesla owners can lend their vehicles to the fleet and earn passive income
This more or less positions the two companies as competitors in the robotaxi space -- at least for the time being
Could Tesla one day become a partner of Uber
Possibly, especially if Tesla's fleet struggles to scale
Perhaps there is room for more than one to thrive in the space, although, in the current ride-hailing sector, Uber and Lyft essentially control the entire market
In several instances this year, good news for Tesla's robotaxi fleet has sent s of Uber down
It's hard to know how things will shake out in such early days, but with Tesla trading at close to 170 times forward earnings, investors are ly baking in tremendous success in the robotaxi
Uber, trading at 25 times forward earnings, is ly not baking in as much success in its autonomous ambitions
That's something for investors to keep in mind as they evaluate both stocks
Bram Berkowitz has no position in any of the stocks mentioned
The Motley Fool has positions in and recommends Tesla and Uber nologies
The Motley Fool recommends Lyft
The Motley Fool has a disclosure policy.
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