The number on the homepage is not copied from anywhere — it is computed live from SEC filings and real-time market prices. This page lists every input, where it comes from, and what we deliberately leave out. Holdings last verified 2026-06-12.
The formula
net worth = Σ per company [ shares × live price
+ max(0, live price − strike) × options ]
+ private venture estimates The holdings
unvested until 2033/2035 (Form 4 footnote); wealth indices exclude it too
Private ventures (static estimates)
Conservative round numbers, refreshed manually when new funding rounds are reported. At this scale they move the total by less than a normal trading hour.
What we include — and don't
- Options at full intrinsic value, pre-tax. We show max(0, price − strike) × count with no haircut for exercise costs or taxes. Bloomberg and Forbes apply discounts here, which is the main reason our number can run higher.
- Unvested awards are out. Musk's 2025 Tesla CEO Performance Award (~424M restricted shares) doesn't vest until 2033–2035 and is excluded, as the wealth indices do.
- All SpaceX share classes valued at the Class A price. Class B converts 1:1; preferred converts at 50:1 per the IPO terms in his Form 3. None of these classes trade separately.
Why our number differs from Forbes and Bloomberg
On the day we verified this page, Forbes' real-time list showed roughly $1.12T and Bloomberg roughly $0.7T for the same man — a gap of over $400B between the two reference indices, driven mostly by how each treats the SpaceX/xAI merger and private-asset valuations. Our approach: value exactly what the SEC filings say he holds, at exactly what the market says it's worth, and document every choice above. We typically land within a few percent of Forbes and check ourselves against it daily.
The data pipeline
- Prices: SPCX and TSLA stream from Finnhub with Yahoo Finance as fallback, cached ~3 seconds at the CDN. Between refreshes the counter animates at the day's realized per-second rate and snaps back to the true figure on every poll. Pre-market (4:00–9:30 ET) and after-hours (16:00–20:00 ET) trades are included and labeled; outside those windows the display holds the last traded price.
- Sanity guards: a quote deviating more than 25% from the last accepted price needs a second source to agree; near-exact 2×/0.5× moves (the signature of a stock split) freeze the display on the last good price until reviewed.
- The comparison rail: each rival's figure is base + shares × live price of their main holding (GOOGL, AMZN, ORCL, DELL), calibrated 2026-06-12 against the Bloomberg Billionaires Index and re-checked against the indices regularly. Country GDPs are IMF annual estimates.
Corrections
When an input turns out to be wrong, we fix it and log it here — including the ones we got wrong first.
- 2026-06-12
SpaceX holding rebuilt from Musk's Form 3 (filed at the IPO): 4,766,475,230 Class A share-equivalents across Class A, Class B (1:1), and preferred stock (50:1), replacing the press-reported "4.8B shares". Options strike corrected to $8.3998. Stake corrected from 42% (pre-IPO) to ~36% (post-IPO). Tesla stake corrected from ~13% to 11.0% per the April 2026 Schedule 13G/A.
- 2026-06-12
Rich-list comparisons recalibrated against the Bloomberg Billionaires Index (Jun 11) — Larry Page corrected from a stale $180B estimate to ~$304B; Sergey Brin and Michael Dell added; roster now tracks ranks #2–#6.