Mark Zuckerberg vs Cai Kui: who is richer?
Mark Zuckerberg is richer, with a net worth of $209.7 billion versus Cai Kui's $3.67 billion — a gap of $206.1 billion, or 57 times as much (as of November 7, 2026).
Mark Zuckerberg
Source of wealth: Facebook
$209.7B
Cai Kui
Source of wealth: Real estate
$3.67B
Side-by-side
| Mark Zuckerberg | Cai Kui | |
|---|---|---|
| Net worth | $209.7B | $3.67B |
| World rank | #5 | #1138 |
| Makes per second | −$124 | −$12.39 |
| Makes per day | −$10.69M | −$1.07M |
| Today | +$1.72B | −$40.98M |
| Source of wealth | Real estate | |
| Age | 42 | 63 |
| Country | United States | China |
Net worth by year
| Year | Mark Zuckerberg | Cai Kui |
|---|---|---|
| 2026 | $222B | $4.6B |
| 2025 | $216B | $4.3B |
| 2024 | $177B | $4B |
| 2023 | $64.4B | $5.9B |
| 2022 | $67.3B | $8.7B |
| 2021 | $97B | $10.4B |
| 2020 | $54.7B | $6.9B |
| 2019 | $62.3B | $5.6B |
| 2018 | $71B | $4.6B |
| 2017 | $56B | $2.7B |
| 2016 | $44.6B | $2B |
| 2015 | $33.4B | $2.1B |
Frequently asked questions
Who is richer, Mark Zuckerberg or Cai Kui?
Mark Zuckerberg is richer, worth $209.7 billion compared with Cai Kui's $3.67 billion. The difference is $206.1 billion.
Who makes more per second, Mark Zuckerberg or Cai Kui?
Cai Kui makes more: about −$12.39 per second versus −$124. Per day that's −$1.07M vs −$10.69M.
How many times richer is Mark Zuckerberg than Cai Kui?
Mark Zuckerberg has about 57 times Cai Kui's net worth.