Net worth
$34.5B
Forbes Real-Time · as of Sep 24, 2026
Latest moves
No moves from Len Blavatnik in the digest yet. The archive grows every morning.
Recent SEC filings
Form 4 insider trades post within 2 business days. 13F fund holdings can arrive 45 days after quarter end. New to filings? Read Filings 101.
Footprint
Companies
Access IndustriesFounder and Chairman
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- Role
- Founder and Chairman; controlling person of Access Industries Management, LLC
Warner Music Group Corp.WMG · Nasdaq · Director · 99.8% · as of Jan 2026 · $27.29 ▲ 0.48%
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- Ticker
- WMG
- Exchange
- Nasdaq
- Role
- Director; controlling shareholder via AI Entertainment Holdings LLC (99.8% of Class B, 20 votes/share; 'controlled company')
- Stake
- 99.8% of Class B common (374,517,252 shares)
- Stake as of
- 2026-01-06
DAZN GroupOwned via Access Industries
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- Role
- Owned via Access Industries (global sports streaming); profitable for first time in 2025; acquired Foxtel Group, ViewLift and EverPass
LyondellBasell Industries N.V.LYB · NYSE · Largest shareholder via Access… · 20.0% · as of Apr 2026 · $60.18 ▲ 0.35%
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- Ticker
- LYB
- Exchange
- NYSE
- Role
- Largest shareholder via Access affiliates; nomination rights for board seats (3 Access nominees)
- Stake
- 20.0% (64,435,504 shares)
- Stake as of
- 2026-04-01
DigitalOcean Holdings, Inc.DOCN · NYSE · Largest holder via AI Droplet Holdings… · 15.86% · as of Aug 2026 · $141.57 ▲ 0.25%
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- Ticker
- DOCN
- Exchange
- NYSE
- Role
- Largest holder via AI Droplet Holdings LLC (Schedule 13D, Amendment No. 7)
- Stake
- 15.86% (18,653,451 shares)
- Stake as of
- 2026-08-04
Clal Industries Ltd.Israeli industrial holding co…
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- Role
- Israeli industrial holding co reporting through Access Industries Holdings LLC (13D on Tigo Energy)
Stakes
Chime Financial, Inc. - 13G (Rule 13d-1(d)) at IPO: 19,601,430 Class A sharesCHYM · 5.8% · as of Jun 2025 · $27.07 ▲ 2.31%
source ↗Constellation Energy - AI Holdings (BVI) L.P. held 6,276,132 shares received in Calpine merger, registered for resaleCEG · 1.73% · as of Jan 2026 · $261.62 ▼ 0.86%
source ↗Hemab Therapeutics Holdings - 13D via AI DEN-MAB LLC after IPO: 4,876,344 sharesCOAG · 10.4% · as of May 2026 · $35.72 ▼ 2.75%
source ↗OnKure Therapeutics - 13D via AI Biotechnology LLC (incl. pre-funded warrants, capped by blocker)OKUR · 19.99% · as of Mar 2026 · $2.93 ▼ 0.34%
source ↗Tigo Energy - 3,220,645 shares held by Clal Industries (13D/A No. 3)TYGO · 4.24% · as of May 2026 · $0.88 ▼ 1.12%
source ↗Opendoor Technologies - reduced to 17,638,714 shares (13D/A)OPEN · 2.38% · as of Sep 2025 · $2.53 ▼ 1.94%
source ↗Investment vehicles
Access Industries Management, LLCholding co · CIK 0001508226
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- Type
- holding co
- Notes
- Main Access reporting entity for 13D/13G/Form 4 filings (New York); no 13F-HR seen
Access Industries Holdings LLCholding co · CIK 0001391297
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- Type
- holding co
- Notes
- Co-files Form 4s on WMG, LYB, DOCN and biotech holdings
AI Entertainment Holdings LLC / Entertainment Holdings II LLCholding co
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- Type
- holding co
- Notes
- Hold WMG Class B; significant portion of EH II's shares pledged under a loan facility
AI Biotechnology LLCfund · CIK 0001942670
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- Type
- fund
- Notes
- Access biotech investment vehicle (OnKure, Zura Bio, Latigo, Yarrow/VYNE filings)
LB 2020 Family Trusttrust
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- Type
- trust
- Notes
- Distributed 280,000 WMG shares for no consideration on Apr 16, 2026
Private deals
DigitalOcean stake cut from 24.57% (June 2025) to 21.04% (May 2026) to 15.86% (Aug 2026) via sales/dilutionJun 2025
source ↗Calpine (Access minority stake) sold to Constellation Energy; Access no longer owns Calpine shares, received CEG stockJan 2026
source ↗Sold ~384,000 LYB shares at ~$67-69 and donated 464,610 shares (charitable gift) in March 2026Mar 2026
source ↗Hemab Therapeutics IPO - Access affiliate holds 10.4%May 2026
source ↗WMG amended its catalog-acquisition JV with Bain Capital Special Situations (orig. June 29, 2025)Feb 2026
source ↗DAZN acquired ViewLift and EverPass (2026), after acquiring Foxtel Group2026
source ↗Real estate
Cap-Ferrat, French RivieraHotel (Grand-Hôtel du Cap-Ferrat)
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- Type
- Hotel (Grand-Hôtel du Cap-Ferrat)
- Via
- Access Industries
United States and Latin AmericaHotels and residences (Faena)
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- Type
- Hotels and residences (Faena)
- Via
- Access Industries
Trophies
Warner Music Group (controlling owner since 2011 $3.3B buyout)
source ↗Damien Hirst sculpture 'Gone (but) Not Forgotten', bought for $15M in 2014
source ↗Israel's Channel 13 (owner; July 2024 London protests over news-department appointment)
source ↗Legal & regulatory
Sanctioned by Ukrainian presidential decree (Dec 23, 2023; asset freeze) along with 133 companies and 50 individuals
source ↗Channel 13 editorial-independence controversy; protests at Tate Modern Blavatnik Building and Oxford's Blavatnik…
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- In full
- Channel 13 editorial-independence controversy; protests at Tate Modern Blavatnik Building and Oxford's Blavatnik School (July 2024)
Giving
Blavatnik Family Foundation (>$1.5B to 250+ institutions over past decade; Blavatnik School of Government, Oxford; Blavatnik Awards)EIN 81-2444350
source ↗Blavatnik Family Foundation 2020EIN 85-1345780
source ↗Blavatnik Archive FoundationEIN 68-0610651
source ↗Warner Music Group Blavatnik Family Foundation Social Justice FundEIN 85-3060424
source ↗Research gaps: Could not fetch DAZN-Foxtel deal terms (AFR/News Corp blocked); DAZN ownership % not verified. Personal real estate (London Kensington, Manhattan) not verified from fetchable reputable sources; only Access-owned hotel holdings listed. Opendoor 13D/A exact date inferred from filing date Sept 24, 2025. Constellation stake may have been sold after Jan 2026 resale registration. WebSearch unavailable.
Prices via Finnhub · as of Sep 24, 2026 4:00 PM ET. For information only.
What to watch
WMG fiscal year ends Sept 30, 2026; FY2026 10-K/results expected (Nov); Warner Chappell co-chair Carianne Marshall…Nov 2026
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- In full
- WMG fiscal year ends Sept 30, 2026; FY2026 10-K/results expected (Nov); Warner Chappell co-chair Carianne Marshall exits Sept 30, 2026; acting CFO in place pending new CFO
- When
- 2026-11
Further DigitalOcean share sales by Access (stake down to 15.86% by Aug 2026)
source ↗DAZN leadership reshuffle (new CFO ex-Sportradar who led its Nasdaq listing) - IPO-readiness signals
source ↗LyondellBasell Q3 2026 results and any further Access LYB sales/donations
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