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Why Electric Vehicle Stocks Tesla, Rivian, and Aehr Test Systems Rallied Today

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Shares of electric vehicle makers Tesla (NASDAQ: TSLA), Rivian (NASDAQ: RIVN), and Aehr Test Systems (NASDAQ: AEHR) rallied on Wednesday, up 5.2%, 4.7%, and 15.8%, respectively, as of 11:30 a.m. ET.

There wasn't much company-specific news today, so the across-the-board rally likely had to do with today's important inflation report.

CPI runs hot, but the important "core" CPI cools

Inflation is a critical factor in demand for autos, as a car is a large-ticket item that is often financed by customers. But interest rates have proven to be especially critical for electric vehicle stocks, given that EVs have up until this point been a bit more expensive, at least up front before maintenance, than traditional internal combustion cars.

In addition, EV stocks tend to be unprofitable or trade at high multiples. Interest rates tend to especially punish high-multiple stocks or unprofitable stocks, as higher rates depress the value of cash flows that are further out in the future, while also making financing a business more expensive.

Thus, today's positive inflation report sparked a "risk-on" rally, including these EV-related stocks. Today, the December Consumer Price Index (CPI) was released.

While the overall CPI came in a bit hotter than expected, "core" CPI figures, stripping out volatile food and energy prices, actually cooled more than expected. The CPI came in at 2.9% year over year and 0.4% month over month, versus expectations of 2.8% and 0.3%, respectively. However, core CPI came in at 3.2% year over year and 0.2% month over month, below the 3.3% and 0.3% expected.

Cool inflation data is critical, as new fears of an inflation reacceleration came to the fore after the Federal Reserve's December meeting and press conference. In that meeting, Fed chair Jay Powell and other officials worried that strong economic data and the Fed's 100 basis points of rate cuts since September may prevent inflation from coming down as quickly as hoped. After that meeting, long-term Treasury rates rose, and expectations for more short-term interest rate cuts fell, suggesting higher interest rates for borrowers of autos.

So, today's "core" numbers coming in cooler than expected generated relief from the fears over higher rates.

Person smiles at electric vehicle charging.
Image source: Getty Images.

Each stock may have also bounced harder, given that each had sold off recently. Tesla enjoyed a post-election pop, thanks to Elon Musk's backing of President-elect Trump, but has since seen a pullback. That pullback was amplified when Tesla reported a miss on its fourth-quarter deliveries in early January. Furthermore, the deliveries implied Tesla would experience its first-ever annual sales decline in 2024.