Jim Simons - Renaissance Technologies LLC Investment Strategy & Portfolio Analysis
How Renaissance Technologies LLC allocates capital, manages risk, and constructs its portfolio — based on SEC 13F filings.
As of Mar 31, 2026, Jim Simons's Renaissance Technologies LLC portfolio reflects a index-style investor approach across 2757 reported 13F positions. Portfolio returns are distributed across holdings, with the top five positions representing approximately 7% of total exposure. Across 2757 reported holdings, economic exposure is broadly distributed across technology, healthcare, and consumer cyclical companies without dominant single-name concentration. Exposure to high-growth and technology-oriented segments is moderate relative to peers, with performance weighted across healthcare, consumer discretionary, and basic materials. The portfolio maintains moderate turnover, consistent with periodic rebalancing rather than a fully static book. Distinctive traits include Moderate Turnover, Broadly Diversified, Economically Diversified.
Investment Style
Value, growth, quality, and behavioral classification from latest 13F holdings.
Primary type: Index-Style Investor
Traits: Moderate Turnover, Broadly Diversified, Economically Diversified, Structurally Diversified
Turnover profile
Active
Holding horizon
Moderate
Portfolio Construction
Concentration and position sizing in the latest filing.
Portfolio construction is lowly concentrated: top three names represent 4.6% of assets, top five 7.1%, and the largest single position is 1.7%.
Top 3 weight
4.6%
Top 5 weight
7.1%
Top 10 weight
11.6%
Largest position
1.7%
Top holdings: United Therapeutics Corporation, Palantir Technologies Inc., Apple Inc., Kinross Gold Corporation, Micron Technology, Inc. — view full holdings
Sector Preferences
Where capital is allocated by sector.
Capital is tilted toward Technology and Healthcare, with 12 sectors represented in the latest filing.
Leading sectors: Technology, Healthcare, Consumer Cyclical
Risk Framework
Concentration, diversification, and turnover tolerance.
This investor accepts low single-name risk (largest position 1.7%, top ten 11.6%) and high economic diversification (HHI 0.00). Turnover tolerance maps to a active profile.
Largest position
1.7%
Top 10 weight
11.6%
Max sector
20.1%
Diversification
High
Strategy Evolution
How the strategy changed between the two most recent filing periods.
Dec 31, 2025 → Mar 31, 2026
- Position count decreased from 2780 to 2757 (-23 names).
- Largest holding changed from Palantir Technologies Inc. to United Therapeutics Corporation.
- Quarter-over-quarter portfolio weight turnover: 30.0%.
For trade-level changes, see the Activity page. View activity.
Similar Investors
Peer group with comparable portfolio behavior.
Similar-investor comparisons are coming soon.