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Methodology

We take wealth estimation seriously. Extremely seriously. So seriously, in fact, that we've reduced it to a number, a boolean, and a refresh interval.

Here's how the sausage is made.

The Formula

Net Worth = Public Equities + Private Equity Estimates − Liabilities

Profound, we know.

Public Equities

These are assets tied to companies whose stock trades on public exchanges. Prices update in real time (with a 30-second cache on our end, because servers aren't free).

Tesla (TSLA)

Per a June 2026 Form 4 filing, Musk owns approximately 11% of Tesla's outstanding shares, which works out to roughly 389 million shares. This excludes 424 million restricted shares from his 2025 CEO award (subject to performance conditions) and 286 million shares from his 2018 CEO award that were exercised but remain unvested. A $10 move in TSLA shifts his counted wealth by roughly $3.9 billion.

When TSLA is up, the answer may be YES. When TSLA is down, it may be NO. This is the central dramatic tension of our platform.

SpaceX (SPCX)

SpaceX went public on June 12, 2026, opening at a valuation of nearly $2 trillion. Per the S-1 filing and Forbes, Musk owns 38% of SpaceX including options — approximately 4.76 billion shares. Unlike his Tesla position, unvested SpaceX shares are included in the counted stake, consistent with both Bloomberg and Forbes methodology. We pull the live SPCX price the same way we do TSLA.

Private Equity Buffer

Musk holds significant stakes in several private companies. We use the following fixed valuations from Bloomberg/Pitchbook data:

  • The Boring Company — $3.33 billion
  • Neuralink — $3.42 billion
  • X (formerly Twitter) and xAI — effectively captured via SpaceX (see below)

On X and xAI: In March 2025, xAI acquired X (formerly Twitter) at a $33 billion valuation, having previously been raising at $44 billion. In September 2025, xAI closed a Series E at a $200 billion valuation. Then in February 2026, xAI was folded into SpaceX. Musk's xAI equity converted to SpaceX shares — meaning the combined value of X and xAI is already reflected in the live SPCX price. Adding them here separately would be double-counting.

These don't fluctuate second-to-second because, well, you can't trade Neuralink on Robinhood. Yet.

Liabilities

Yes, billionaires have debt too. Per Tesla's 2025 proxy, Musk has pledged 57% of his Tesla shares as collateral for margin loans. The loan is capped at the lesser of 25% of those pledged shares or $3.5 billion — so we subtract $3.5 billion.

We are not a credit rating agency. This estimate is approximate.

The Trillion-Dollar Threshold

One trillion dollars is $1,000,000,000,000. Twelve zeroes. A number so large that if you spent one million dollars every single day, it would take you 2,739 years to spend it all.

We compare Musk's estimated net worth against this threshold. If it's at or above $1,000,000,000,000, the answer is YES. If it's below, the answer is NO.

The Discrepancies (This Is Where It Gets Interesting)

Even the professionals can't agree. As of late June 2026, Bloomberg's real-time tracker showed $938 billion. Forbes had him at $946 billion. That's an $8 billion gap between two organisations with dedicated teams, proprietary data, and no sense of humour. Our number, using the same methodology they publish, lands around $880 billion on the same inputs — a further $58 billion below Bloomberg.

Where does the gap come from? Mostly Tesla share counts.

Bloomberg states Musk owns "about 11% of Tesla" per a June 2026 Form 4, after excluding 424 million restricted shares. 11% of Tesla's 3.538 billion shares outstanding (Q1 2026) gives roughly 389 million shares. But Bloomberg's own published Tesla figure of $157 billion — at a share price of $379.57 — implies 413 million shares, or about 11.7%. Meanwhile, Motley Fool reported Musk held 717 million shares as of April 2026, a number consistent with his gross holdings before any exclusions.

Apply Bloomberg's restricted-share exclusion to the Motley Fool figure: 717M − 424M = 293 million shares, which produces a Tesla stake worth ~$111 billion — undershooting Bloomberg by $46 billion. Don't apply it: you get $272 billion, overshooting by $115 billion.

The truth is somewhere in there, and nobody is publishing exactly which shares they're counting.

SpaceX adds its own wrinkle. Bloomberg excludes unvested Tesla shares from the net worth calculation but includes unvested SpaceX shares — a methodological inconsistency they don't explain. We follow their lead on SpaceX (38% = 4.76 billion shares) because it's what produces numbers consistent with both their figure and Forbes's.

The upshot: Bloomberg's own static line items add up to $890 billion, yet their live tracker shows $938 billion. That unexplained $48 billion gap lives somewhere inside their model. We don't know where. They probably do.

Caveats

  1. We are not Bloomberg. We are not Forbes. We are not a financial institution.
  2. Net worth estimates of this magnitude involve enormous uncertainty. Private company valuations are opinions dressed as facts.
  3. The "real" number depends on who you ask, when you ask, and whether there's been a tweet in the last hour.
  4. This site is for entertainment and morbid curiosity, not financial planning.
  5. The fact that a single human can own this much is, philosophically speaking, a lot to sit with.

Data Freshness

The server fetches new prices every 60 seconds, caching the result to avoid hammering rate limits. The lastUpdated timestamp in the API response tells you exactly how stale the data is.

All figures are estimates. Past trillionaire-status is not indicative of future trillionaire-status. Do not @us.