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Billionaire Index

A daily ranking of the world's richest people

Last updated: November 11, 2026 · $11.70T tracked

Methodology

No. 84Russia

Leonid Mikhelson & family

Gas, chemicals · Moscow

Net worth

$28.3B

Today

+$194+0.00%

Past month

+$370K+0.00%

As of Nov 11, 2026, 1:50 PM EST

Leonid Mikhelson is the founder and chairman of natural gas producer Novatek. In 2017 he bought a 17% stake in petrochemical company Sibur from Kirill Shamalov, Putin's reported former son-in-law, increasing his stake to 48%; he now holds just over 30%. In 2021 Sibur merged with TAIF Group, with extensive assets in the Republic of Tatarstan; among TAIF's owners are the sons of Tatarstan's first president. Mikhelson spent more than $470 million turning a power plant across from the Kremlin into a spectacular art space GES-2, which opened in late 2021.

Net worth over time

+0.00%+$370K over the past month
$28B$28B$28B
Oct 12Nov 11

Principal holdings

2 positions
CompanyShareValue

Private and other holdings

59.3%$16.8B

Novatek

MICEX: NVTK-RU

40.7%$11.5B

Also known for

  • An avid art collector, Mikhelson has sponsored museum exhibits in Russia and the U.S through a fund named after his daughter.
  • Mikhelson began his career as a foreman for a construction company building a gas pipeline in Russia's Tyumen region.