Sifting through countless of stocks in the Automobiles industry can be tedious, and sometimes two stocks are just too similar to judge which is the better investment. If you’re on the fence about investing in Rivian Automotive, Inc. or NIO Inc. because you’re not sure how they measure up, it’s important to compare them on a few factors before making your decision.

Read on to learn how Rivian Automotive, Inc. and NIO Inc. compare based on key financial metrics to determine which better meets your investment needs.

About Rivian Automotive, Inc. and NIO Inc.

Rivian Automotive, Inc., together with its subsidiaries, develops, manufactures, and sells category-defining electric vehicles. It operates through two segments, Automotive, and Software and Services. The company offers consumer vehicles, including a two-row, five-passenger pickup truck under the R1T brand; and a three-row, seven-passenger sport utility vehicle under the R1S name. It also provides software and services, such as vehicle electrical architecture and software development, as well as Autonomy+, remarketing, vehicle repair and maintenance services, software subscriptions, vehicle accessories, financing, insurance, and other services. In addition, the company designs, develops, and manufactures the Rivian Adventure Network Direct Current fast chargers; and FleetOS, a proprietary, end-to-end centralized fleet management subscription platform. Further, it offers Rivian Commercial Van platform for Electric Delivery Van with collaboration with Amazon.com, Inc. Rivian Automotive, Inc. was founded in 2009 and is based in Irvine, California.

NIO Inc. designs, develops, manufactures, and sells smart electric vehicles in China, Europe, and internationally. It offers five and six-seater electric SUVs, as well as smart electric sedans. The company also offers power solutions, including Power Home, a home charging solution; Power Swap, a battery-swapping service; Power Charger and Destination Charger; Power Mobile, a mobile charging service through charging vans; Power Map, an application that provides access to a network of public chargers and their real-time information; and One Click for power valet service. In addition, it provides repair, maintenance, car beauty, and inspection services through its service centers and authorized third-party service centers; vehicle transportation and delivery, pre-delivery inspections, guidance on vehicle features, assistance with vehicle registration, and insurance processing services; insurance, maintenance, repairs, accident rescue, car washing, chauffeur services, and valet parking services; and remote monitoring and real-time diagnostics services, as well as technical, warranty, and auto financing arrangements. Further, the company is involved in the provision of energy and service packages to its users; design and technology development activities; manufacture of electric powertrains, battery packs, and components; and sales and after-sales management activities. Additionally, it operates in app NIO Auto Mall where users can select from various accessories and value added services; and online auction platform. The company was formerly known as NextEV Inc. and changed its name to NIO Inc. in July 2017. NIO Inc. was incorporated in 2014 and is headquartered in Shanghai, China.

Latest Automobiles and Rivian Automotive, Inc., NIO Inc. Stock News

As of September 4, 2026, Rivian Automotive, Inc. had a $22.8 billion market capitalization, compared to the Automobiles median of $6.5 million. Rivian Automotive, Inc.’s stock is down 20.1% in 2026, down 2.1% in the previous five trading days and up 14.89% in the past year.

Currently, Rivian Automotive, Inc. does not have a price-earnings ratio. Rivian Automotive, Inc.’s trailing 12-month revenue is $5.9 billion with a -55.0% net profit margin. Year-over-year quarterly sales growth most recently was 27.2%. Analysts expect adjusted earnings to reach $-2.201 per share for the current fiscal year. Rivian Automotive, Inc. does not currently pay a dividend.

As of September 4, 2026, NIO Inc. had a $9.5 billion market cap, putting it in the 77th percentile of all stocks. NIO Inc.’s stock is down 25.5% in 2026, down 13% in the previous five trading days and down 38.01% in the past year.

Currently, NIO Inc. does not have a price-earnings ratio. NIO Inc.’s trailing 12-month revenue is $14.6 billion with a -4.2% net profit margin. Year-over-year quarterly sales growth most recently was 123.2%. Analysts expect adjusted earnings to reach $-0.035 per share for the current fiscal year. NIO Inc. does not currently pay a dividend.

How We Compare Rivian Automotive, Inc. and NIO Inc. Stock Grades

Stock evaluation requires access to huge amounts of data and the knowledge and time to sift through it all, make sense of financial ratios, read income statements and analyze recent stock movements. AAII created A+ Investor, a robust data suite that condenses data research in an actionable and customizable way suitable for investors of all knowledge levels, to help investors streamline and work through such data.

AAII’s proprietary stock grades come with A+ Investor. These offer intuitive A‐F grades for each of five key investing factors: value, growth, momentum, earnings estimate revisions and quality. Here, we’ll take a closer look at Rivian Automotive, Inc. and NIO Inc.’s stock grades to see how they measure up against one another.

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Rivian Automotive, Inc. and NIO Inc. Growth Grades

Company	Ticker	Growth
Rivian Automotive, Inc.	RIVN	na
NIO Inc.	NIO	D

The foundation of growth investing is seeking out stocks of companies exhibiting strong, consistent and prolonged growth that is expected to continue into the future.

In order to compute the growth score and assign it a letter grade, the percentile ranks for each of three components‐consistency of annual sales growth, five-year sales growth rankings adjusted for extreme levels, and consistency of positive annual cash from operations‐must be determined. These three rank figures are added together, and the sum is ranked against the entire stock universe to arrive at a company’s Growth Score to create an equal distribution of grades.

The companies in the bottom 20% of the stock universe receive Growth Grades of F, considered to be very weak, while those in the top 20% receive A grades, which are considered very strong.

Rivian Automotive, Inc. does not have a meaningful Growth Score. NIO Inc. has a Growth Score of 33, which is Weak.

The Growth Stock Winner: No Clear Winner

Neither Rivian Automotive, Inc. or NIO Inc. has a high enough Growth Grade to be considered a “winner.” Investors who are considering these companies should do additional due diligence and research to see if either could be a good addition to their portfolios. It’s important to look at a wide range of financial metrics in order to determine if Rivian Automotive, Inc. or NIO Inc. is the better investment when it comes to sustainable growth.

Rivian Automotive, Inc. and NIO Inc.’s Momentum Grades

Company	Ticker	Momentum
Rivian Automotive, Inc.	RIVN	C
NIO Inc.	NIO	F

Momentum grades help to uncover stocks experiencing anomalously high rates of return; research finds that stocks with high relative levels of momentum tend to outperform, whereas those with low levels of momentum tend to continue underperforming. Momentum is based on the price change of a stock over a specified period relative to all other stocks.

Typically, AAII looks at the weighted relative strength over the trailing four quarters. The weighted four-quarter relative strength rank is the relative price change for each of the past four quarters. The most recent quarterly price change is given a weight of 40% and each of the three previous quarters are given a weighting of 20%.

Rivian Automotive, Inc. has a Momentum Score of 42, which is Average. NIO Inc. has a Momentum Score of 13, which is Very Weak.

The Momentum Stock Winner: No Clear Winner

Neither Rivian Automotive, Inc. or NIO Inc. has a strong enough Momentum Grade to be considered a “winner.” Investors considering these companies should do additional due diligence and research to see if either could be a good addition to their portfolios. It’s important to look at a wide range of financial metrics in order to determine if Rivian Automotive, Inc. or NIO Inc. is the better investment when it comes to momentum.

Rivian Automotive, Inc. and NIO Inc.’s Estimate Revisions Grades

Company	Ticker	Earnings Estimate
Rivian Automotive, Inc.	RIVN	C
NIO Inc.	NIO	D

Earnings estimate revisions scores consider the magnitude of a company’s earnings surprise in its last two reported fiscal quarters. Often, positive surprises beget further positive surprises‐or at least continued sales growth (the exact opposite is generally true, too).

Estimate revisions offer an indication of what analysts are thinking about the short-term prospects of a firm. Estimate revisions are based on the statistical significance of a firm’s last two quarterly earnings surprises and the percentage change in its consensus estimate for the current fiscal year over the past month and past three months.

Rivian Automotive, Inc. has a Earnings Estimate Score of 53, which is Neutral. NIO Inc. has a Earnings Estimate Score of 28, which is Negative.

The Earnings Estimate Revisions Stock Winner: No Clear Winner

Neither Rivian Automotive, Inc. or NIO Inc. has an Earnings Estimate Revisions Grade that could be considered a “winner.” Investors considering these companies should do additional due diligence and research to see if either could be a good addition to their portfolios. It’s important to look at a wide range of financial metrics in order to determine if Rivian Automotive, Inc. or NIO Inc. is the better investment when it comes to estimate revisions.

Other Rivian Automotive, Inc. and NIO Inc. Grades

In addition to Growth, Estimate Revisions and Momentum, A+ Investor also provides grades for Value and Quality.

Successful stock investing involves buying low and selling high, so stock valuation is an important consideration for stock selection. Buying stocks that are going to go up typically means buying stocks that are undervalued in the first place, although momentum investors may argue that point.

AAII’s A+ Investor Quality Grade comes from the ranking of key metrics. Specifically, the quality grade is the percentile rank of the composite of return on assets (ROA), return on invested capital (ROIC), gross profit relative to assets, buyback yield, change in total liabilities to assets, accruals, Z double prime bankruptcy risk (Z) score and F-Score.

These 2 key factors, when combined with the above, provide a holistic view into a particular stock. Further, by joining A+ Investor you can see whether Rivian Automotive, Inc. and NIO Inc. pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Rivian Automotive, Inc. or NIO Inc. Stock?

Overall, Rivian Automotive, Inc. stock has a Growth Score of , Momentum Score of 42 and Estimate Revisions Score of 53.

NIO Inc. stock has a Growth Score of 33, Momentum Score of 13 and Estimate Revisions Score of 28.

Comparing Rivian Automotive, Inc. and NIO Inc.’s grades, scores and metrics can act as a solid basis to determine whether they may be a good investment or not. You’ll also want to look at your portfolio’s asset allocation as well as your risk tolerance and financial goals to see if either of these stocks would make a good fit for you. AAII can help you figure out which investments align with your individual needs and preferences.

Investors are encouraged to do their own due diligence and research. In this way, individuals can effectively become managers of their own assets‐without having to rely on others for financial independence. You can count on AAII for timeless articles on financial planning and stock-picking, unbiased research and actionable analysis.

A+ Investor adds to our qualitative teaching with a powerful data suite to help you whittle down investment choices to find stocks, exchange-traded funds (ETFs) or mutual funds that meet your needs.

AAII Disclaimer

We make no representations or warranties that any investor will, or is likely to, achieve profits similar to those shown, because past, hypothetical or simulated performance is not necessarily indicative of future results. Before making an investment decision, you should consider your circumstances and whether the information on our content is applicable to your situation. This information was prepared in good faith, and we accept no liability for any errors or omissions. The full disclaimer can be read here.