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.

Index-Style Investor

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

View full sector allocation

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.