Jim Simons' Portfolio Shifts: Analysis of Significant Purchases and Sales in Q1 2026

As part of their ongoing investment strategy, Renaissance Technologies LLC's portfolio manager Jim Simons has recently adjusted several positions within his massive portfolio as of June 30th, 2026. This analysis focuses on the significant changes observed during this quarter.

Prominent Purchases in Q1 2026

Jim Simons' investment activity saw notable increases across several sectors during the first quarter of 2026:

• NVIDIA Corporation (NVDA), a Technology leader, experienced an 180.63% increase in shares held by Simons.
• META PLATFORMS INC (META), part of the Communication Services sector, saw its share count rise significantly by 698.49%, indicating strong confidence in this stock.
• ALPHABET INC (GOOGL) also attracted substantial buying from Simons, with an impressive 327.2% increase in holdings during the quarter.
• The healthcare sector saw a significant purchase of CROWDSTRIKE HLDGS INC (CRWD), where Simons' stake increased by an astronomical 1371.43% in just one quarter.
• Furthermore, the investor significantly boosted their position in NETFLIX INC. (NFLX), a Communication Services company, increasing holdings by approximately 275,718% from the previous quarter.

Substantial Sales During Q1 2026

In contrast to these large purchases, Simons also divested substantial portions of other assets during this period:

• Western Digital Corporation (WDC) was sold off significantly by the investor, with holdings decreasing by 50.00%.
• The technology sector also saw a notable reduction in Murata Manufacturing Co., Ltd. (MU), where Simons' stake decreased by 92.31% during the quarter.
• Shares of HOOD Inc. (HOOD) were reduced by a substantial 87.06%, reflecting an exit from this position.
• The investor also decreased their stake in UnitedHealth Group Corporation (UNH) by approximately 93.52% during the quarter.
• Finally, investment in Marvell Semiconductor Ltd. (MRVL) was reduced significantly, with a decrease of about 87.06% from prior levels.

Portfolio Allocation Insights

The portfolio's allocation across sectors as of June 30th, 2026, provides context for these changes:

• Technology remains a core holding with approximately $15.0B allocated to this sector.
• Communication Services is another major allocation, totaling around $6.14B as of the latest data point.
• The Healthcare sector, particularly through positions like CrowdStrike and United Therapeutics Corp., holds significant value at about $954M combined.
• Industrials allocation includes companies like Redwire Corporation, totaling roughly $678M as of June 30th.
• The portfolio also holds substantial value in Basic Materials, Energy, and other sectors, though specific details on the latter are limited based on available disclosures.

These changes reflect a dynamic investment approach focused on capturing performance across different market segments. The significant buying activity suggests confidence in certain high-growth areas during this period.

Detailed Holdings Changes

The following table provides more detailed information on the specific holdings that changed significantly for Jim Simons' portfolio:

The portfolio's total value as of June 30th, 2026, stands at approximately $69.7B.

Conclusion: Strategic Portfolio Management by Jim Simons

In summary, the first quarter of 2026 witnessed both significant buying and selling activities within Jim Simons' portfolio managed through Renaissance Technologies LLC. The investor demonstrated a clear preference for high-growth technology stocks like NVIDIA and Communication Services companies such as META, while substantially reducing exposure to other sectors including Technology (via WDC, MU) and Healthcare (via UNH). This strategic approach highlights the focused nature of Simons' investment decisions.

For more detailed information on Jim Simons' holdings or Renaissance Technologies LLC's investment profile, please visit Renaissance Technologies.