Stanley Druckenmiller - Duquesne Family Office Llc Investment Strategy & Portfolio Analysis
How Duquesne Family Office Llc allocates capital, manages risk, and constructs its portfolio — based on SEC 13F filings.
According to the SEC 13F filed on Aug 14, 2026, Stanley Druckenmiller's Duquesne Family Office Llc portfolio reflects a opportunistic approach across 76 reported 13F positions as of quarter-end Jun 30, 2026. Portfolio returns are led by Natera, (~21% of total exposure), with the top five holdings representing approximately 41% of reported value. The portfolio maintains structural breadth across 76 positions, with economic weighting tilted toward healthcare and technology names. Exposure to high-growth and technology-oriented segments is moderate relative to peers, with performance weighted across healthcare, unknown, and energy. The portfolio maintains moderate turnover, consistent with periodic rebalancing rather than a fully static book. Distinctive traits include Moderate Turnover, Structurally Diversified.
Investment Style
Value, growth, quality, and behavioral classification from latest 13F holdings.
Primary type: Balanced Investor
Traits: Moderate Turnover, Structurally Diversified
Turnover profile
Active
Holding horizon
Moderate
Portfolio Construction
Concentration and position sizing in the latest filing.
Portfolio construction is moderately concentrated: top three names represent 34.0% of assets, top five 41.2%, and the largest single position is 21.3%.
Top 3 weight
34.0%
Top 5 weight
41.2%
Top 10 weight
56.0%
Largest position
21.3%
Top holdings: Natera, Inc., Taiwan Semiconductor Manufactur, STMicroelectronics N.V., Insmed Incorporated, YPF Sociedad Anonima — view full holdings
Sector Preferences
Where capital is allocated by sector.
Capital is tilted toward Healthcare and Technology, with 10 sectors represented in the latest filing.
Leading sectors: Healthcare, Technology, Unknown
Risk Framework
Concentration, diversification, and turnover tolerance.
This investor accepts moderate single-name risk (largest position 21.3%, top ten 56.0%) and moderate economic diversification (HHI 0.05). Turnover tolerance maps to a active profile.
Largest position
21.3%
Top 10 weight
56.0%
Max sector
32.8%
Diversification
Moderate
Strategy Evolution
How the strategy changed between the two most recent filing periods.
Mar 31, 2026 → Jun 30, 2026
- Position count increased from 56 to 76 (+20 names).
- Top-five concentration fell from 46.1% to 41.2%.
- Quarter-over-quarter portfolio weight turnover: 37.7%.
For trade-level changes, see the Activity page. View activity.
Similar Investors
Peer group with comparable portfolio behavior.
Similar-investor comparisons are coming soon.