MBLY vs TSLA: Which Is the Better Buy in 2026?
Last updated October 2026
Short answer
TSLA is the larger of the two ($1.40T market cap): the incumbent the market prices for continued execution (163.59x forward earnings, beta 1.92). MBLY is the smaller challenger ($6.14B), cheaper on forward earnings (14.84x): more room to run, but more to prove. The real question is which set of drivers you believe, and whether owning one (or both) leaves you over-concentrated.
MBLY vs TSLA: the tie-breaker metrics
Same yardstick, side by side (as of October 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.
| Metric | MBLY | TSLA | What it tells you |
|---|---|---|---|
| Market cap | $6.14B | $1.40T | Size. The larger name is the incumbent; the smaller has more room to grow and more to prove. |
| Forward P/E | 14.84 | 163.59 | Valuation on next year's expected earnings, the same yardstick for both. Lower is cheaper for that growth; higher means the market is paying up. |
| Beta | 1.24 | 1.92 | Volatility vs the market. Above 1 swings harder than the index; below 1 is steadier. Higher beta means bigger drawdowns to hold through. |
| Price vs 52-week range | 9% of range | 28% of range | Where today's price sits between the 52-week low and high. Near the high is momentum with less margin of safety; near the low is out of favor or a discount, depending on why. |
| Price / book | 0.74 | 16.13 | How much you pay over book value. Very high can signal an asset-light, high-return business or a rich price. |
Reading it: MBLY is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.
Before you buy: how MBLY and TSLA affect your concentration
The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. MBLY and TSLA share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.
This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined MBLY and TSLA exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.
What does Mobileye Global (MBLY) do?
Mobileye Global designs the vision chips (its EyeQ system-on-chip family) and software that power advanced driver-assistance systems in cars from roughly 27 automaker brands worldwide. Its core business ships EyeQ silicon and camera-based ADAS features (lane keeping, automatic emergency braking, adaptive cruise) to original equipment manufacturers, and it is layering on higher-value products such as its SuperVision and Chauffeur hands-off systems and imaging radar. The company was acquired by Intel in 2017, taken public again in a 2022 IPO, and Intel remains the majority shareholder while gradually selling down its stake.
What does Tesla (TSLA) do?
Tesla is an electric-vehicle and clean-energy company, and one of the most closely watched stocks in the world. Its core business is designing, manufacturing, and selling electric cars (Model 3, Model Y, Model S, Model X, Cybertruck) along with the charging network and software that support them. Tesla also sells energy products: solar panels and battery storage systems (Powerwall for homes and Megapack for utilities and businesses). The company makes money primarily from vehicle sales, plus a growing energy-storage business, regulatory credits, and software and services (including its driver-assistance features). Tesla is also pursuing ambitious longer-term bets: full self-driving software, a robotaxi service, and a humanoid robot (Optimus), which bulls see as potential future value drivers far beyond cars. The stock often trades on these future ambitions as much as current automotive earnings. Led by Elon Musk, Tesla is headquartered in Austin, Texas, and operates factories in the US, China, and Germany. In its most recent reported quarter (Q2 2026, ended June 30) Tesla's revenue recovered to about $28.2 billion, up roughly 25% from a year earlier, but earnings of $0.33 per share fell well short of the roughly $0.54 analysts expected. Third-quarter results are scheduled for October 21, 2026.
MBLY vs TSLA: how do they differ?
Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.
- MBLY drivers: Core ADAS volume recovery; Premium products moving up the stack.
- TSLA drivers: EV scale and manufacturing efficiency; Energy storage and generation.
Which fits which kind of investor
A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: Mobileye faces intensifying competition from Nvidia, Qualcomm, and Chinese chip players like Horizon Robotics and Huawei, some of whom are winning share in China where Mobileye has struggled. For TSLA, tesla faces intensifying EV competition from legacy automakers and from Chinese manufacturers like BYD, pressuring prices and margins.
MBLY or TSLA: which should you pick?
Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick MBLY if you believe its drivers more; TSLA if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the MBLY and TSLA guides.
MBLY vs TSLA: the full fundamentals
MBLY. Mobileye is profitable on an adjusted basis but reports large GAAP net losses, so headline GAAP EPS (about -$4.97 trailing) looks far worse than the roughly $0.49 of forward adjusted EPS analysts model. At about $7.29 a share, the ~$6.2 billion market cap is near 3 times trailing sales and roughly 15 times forward earnings, and it mostly values the legacy ADAS business, leaving the autonomy and robotaxi roadmap as optionality. Third-quarter results on October 29, 2026 carry a consensus of about $0.10 of adjusted EPS on roughly $477 million of revenue.
TSLA. At about $359 a share Tesla trades near 165 times forward earnings and roughly 14 times sales, multiples that only make sense if autonomy, robotaxi, energy, and Optimus deliver far more profit than the car business earns today. Consensus sees 2026 EPS around $1.74 rising to about $2.17 in 2027, and the analyst mean target near $398 sits about 11% above the October 16 close. With a net cash position (about $43.5 billion of cash against $16 billion of debt), the balance sheet is not the issue; the earnings trajectory is.
Headline figures (approximate, October 2026): MBLY shows revenue (ttm) ~$2.02B (+0.4% YoY latest quarter), revenue (q2 2026) ~$508M, adjusted eps (q2 2026) ~$0.19 vs ~$0.06 est., gaap net income (ttm) ~-$4.06B; TSLA shows revenue (ttm) ~$104 billion, revenue growth (latest quarter, yoy) ~+25%, gross / operating margin (ttm) ~19% / ~1.4%, net income (ttm) ~$3.8 billion (EPS ~$1.08).
The bottom line: MBLY vs TSLA
MBLY and TSLA are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined MBLY and TSLA exposure against your real portfolio. It is not an investment adviser.
Wondering how MBLY or TSLA fits the portfolio you already own? Walnut is an AI investing app that connects your brokerage read-only and answers questions like that about your actual holdings: overlap, concentration, and how each position tracks the S&P 500. Compare the best AI portfolio analyzers or see the best AI investing apps in 2026.
Investing in Mobileye Global with AI
Connect the broker you already use and ask Walnut's AI how MBLY fits what you actually hold: whether you own it already through a fund, what it would do to your concentration, and how it has tracked the S&P 500. Read-only by default, and you approve anything before it reaches your broker.
FAQ
What is the difference between MBLY and TSLA?
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Mobileye Global designs the vision chips (its EyeQ system-on-chip family) and software that power advanced driver-assistance systems in cars from roughly 27 automaker brands worldwide. Tesla is an electric-vehicle and clean-energy company, and one of the most closely watched stocks in the world. They show up together because they share investment themes, but they are different businesses, so the better fit depends on which thesis you are expressing.
Is MBLY or TSLA the better stock?
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Neither is universally better. TSLA is the larger incumbent; MBLY is the smaller challenger and looks cheaper on forward earnings. Walnut is informational, not investment advice. Compare what each does, the tie-breaker metrics above, and the risks, then decide which fits your thesis and what you already own.
Which is cheaper, MBLY or TSLA?
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On forward P/E (as of October 2026), MBLY trades at 14.84x and TSLA at 163.59x, so MBLY is the cheaper of the two on next year's expected earnings. A lower multiple is not automatically the better buy: a richer valuation can be justified by faster growth, and a lower one can reflect real risk. Weigh the multiple against how fast each business is compounding.
Should you own both MBLY and TSLA?
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Because they share themes, owning both concentrates you in that theme. That can be intentional (a focused bet) or accidental (less diversification than it looks). Walnut can show your combined exposure across both, and whether adding either over-concentrates you, before you buy.
What are the risks of MBLY vs TSLA?
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MBLY: Mobileye faces intensifying competition from Nvidia, Qualcomm, and Chinese chip players like Horizon Robotics and Huawei, some of whom are winning share in China where Mobileye has struggled. Revenue is tied to cyclical global auto production and to customer inventory swings, which have historically produced sharp guidance cuts. GAAP results remain deeply loss-making (a trailing net loss of about $4.1 billion, including a roughly $3.8 billion loss in Q1 2026), tied largely to accounting for the intangible assets from the Intel deal, so profitability depends on adjusted metrics. Intel's continued sell-down of its majority stake creates a persistent supply overhang on the shares. The robotaxi ambition is unproven, cash-intensive, and years from meaningful revenue, so the autonomy thesis carries execution and timing risk. The share price itself has become a risk to sentiment: down about 19% over three months and near its 52-week low, while Deutsche Bank trimmed its target to $12 from $13 in October. TSLA: Tesla faces intensifying EV competition from legacy automakers and from Chinese manufacturers like BYD, pressuring prices and margins. Automotive demand is cyclical and sensitive to interest rates, incentives, and economic conditions, and Tesla has cut prices to defend volume, compressing margins. The stock trades at a very high valuation that prices in optimistic outcomes for autonomy, robotaxi, and Optimus, none of which is guaranteed to arrive on the expected timeline or scale, so disappointment can trigger sharp declines. Key-person risk around Elon Musk is significant, given his central role and divided attention across multiple ventures. Regulatory scrutiny of driver-assistance features, geopolitical exposure in China, and execution risk on ambitious new products add further uncertainty. Volatility is extreme. Profitability is thin right now: the trailing operating margin is about 1.4% and trailing net income of about $3.8 billion compares with $15 billion in 2023, so the multiple rests almost entirely on future earnings. Analysts expect Q3 2026 EPS of about $0.45, roughly 10% below a year earlier, and another miss like Q2's would test the premium.
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Walnut is informational, not investment advice. This page is descriptive and not a recommendation to buy or sell MBLY or TSLA; figures are approximate and dated (as of October 2026). Verify current data before investing.