Tesla Inc (TSLA)

Tesla is the clearest example of a company a Buffett-style framework struggles with, and understanding why is more useful than a verdict. This page covers what the valuation actually rests on and what to check.

The business

Cars are the revenue. Energy storage is the fastest-growing division and the part least reflected in the headlines. Autonomy is where most of the market value sits — and it is a forecast rather than a business line. Anyone valuing Tesla on automotive gross margin is valuing a different company from the one the share price implies.

The moat

Contested. The manufacturing lead in electric vehicles has narrowed considerably as legacy carmakers and Chinese manufacturers scaled up. The charging network is a genuine advantage, though opening it to rivals converts it from a moat into a revenue line. The strongest claim is the fleet data advantage for autonomy training — which only becomes a moat if autonomy arrives commercially.

What to check before you value it

• Automotive gross margin — The core business economics, stripped of regulatory credits and energy. It tells you whether cars are a good business at current prices.
• Energy storage growth — Deployments and margin. This is the part of the company least reflected in the delivery headlines.
• What you are actually paying for — Work out the value implied by the car business alone, then look at the gap. That gap is the autonomy assumption, stated explicitly rather than absorbed by accident.
• Key person risk — Concentration of strategy and attention in one individual across several companies is a genuine valuation input, not a talking point.

How much of it you already own

Tesla is roughly 1.9% of the Vanguard S&P 500 UCITS ETF as at July 2026 — a smaller weight than the other large technology names but still a meaningful index position. See what is inside an ETF.

Recent filings

Energy growing 52% is the line most coverage skipped. If storage keeps compounding at that rate it becomes a material part of the valuation on its own terms, independent of anything autonomy does — which would make the investment case considerably easier to underwrite.

How Oak Growth scores it

Oak Growth runs Tesla through the same four pillars as every other company it covers — moat, management, economics and value — and publishes a discounted cash flow intrinsic value alongside the margin of safety against the current price. Because those figures move with the market and with each set of results, they live in the app rather than on this page. See the 4-pillar method →

Common questions

Is Tesla Inc undervalued?

That depends on the price on the day you ask. Oak Growth publishes a discounted cash flow intrinsic value for Tesla Inc and the resulting margin of safety, updated from live market data rather than a fixed figure. The checks that decide it are set out on this page.

Does Tesla Inc have an economic moat?

Contested. The electric vehicle manufacturing lead has narrowed as competitors scaled, and the charging network became a revenue line once it opened to other manufacturers. The strongest remaining claim is fleet data for autonomy training, which only becomes a moat if autonomy arrives commercially.

Is TSLA in index funds and ETFs?

Yes. Tesla was around 1.9% of the Vanguard S&P 500 UCITS ETF as at July 2026, a smaller weight than the other large technology names but still a meaningful index holding.

How do you value Tesla Inc?

Value the automotive and energy businesses on their own economics first, then look at what is left over in the share price. That residual is what the market is paying for autonomy — making the assumption explicit is more useful than any single fair value figure.

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