- 01 Renaissance Technologies, the quantitative hedge fund built by Jim Simons and now run by Peter Brown, holds a $63.9 billion equity portfolio across 3,213 positions per its May 13F filing, driven entirely by algorithmic models that rotate faster than any human-run book.
- 02 The portfolio was roughly flat between filings, slipping from $64.5 billion to $63.9 billion, but the models churned underneath it: 639 new buys and 611 exits in a single quarter.
- 03 The top 5 stakes hold about 7 percent of the portfolio: United Therapeutics at $1.06 billion, Palantir at $1.02 billion, Apple at $781 million, Kinross Gold at $780 million, and Micron at $731 million.
- 04 The models opened a $781 million Apple stake from zero, tripled Nvidia to $441 million, built Broadcom from 889 shares to $246 million, and near-liquidated Netflix, Microsoft, and Tesla.
- 05 Renaissance's Q2 2026 13F is due by August 14. It will show whether the Apple and Nvidia builds were momentum signals or durable allocations, and whether any of the near-liquidations reversed.
How Renaissance Technologies Moved Last Quarter
Here is what Renaissance Technologies did with the portfolio last quarter, grouped by the kind of move. The fund runs 3,213 positions, so the table below shows the largest moves in each group. Share count change is what the models chose. Value change also reflects where the stock price went.
Money In
12 positions
Money Out
6 exits + 6 cuts
Still The Biggest
Top 5, ~7% of portfolio
What to watch
1. Renaissance Technologies’ Q2 2026 13F is due by August 14, 2026. It will show whether the models kept building Apple and Nvidia or reversed those allocations after one quarter.
2. The fund opened $781 million of Apple from zero while tripling Nvidia and building Broadcom from a residual 889 shares to $246 million. The next filing will reveal whether the models treated these as short-term momentum trades or held them as structural bets on AI hardware and consumer tech.
3. Netflix, Microsoft, and Tesla were all cut by 84 percent or more in a single quarter. Quant models can reverse sharply, so the Q2 filing will show whether any of these near-liquidations snapped back or went to zero.
Verified as of May 20, 2026.
Primary Filings & Announcements
SEC EDGAR: Renaissance Technologies 13F-HR Information Table (Q1 2026, filed May 14, 2026)
SEC EDGAR: 13F-HR Filing Index, Accession 0001037389-26-000033
SEC EDGAR: Renaissance Technologies CIK 0001037389 Full 13F Filing History
Market Coverage
Yahoo Finance: Nvidia Quote and Performance
Yahoo Finance: Apple Quote and Performance
Yahoo Finance: Amazon Quote and Performance
Background & Analysis
SEC EDGAR: Renaissance Technologies Full Filing History (all forms)
Renaissance Technologies: Official Website
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