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Jim Simons Portfolio

Jim Simons (1938–2024) was a mathematician and investor who founded Renaissance Technologies and brought mathematical modeling to investment management.

Renaissance Technologies LLC Holdings · Q3 2025

Disclosed value
$75.8B
Holdings
3,457
Top sector
Technology
Filed
Nov 13, 2025
Performance
YTD
+13.5%
+4.5% vs S&P 500
1Y
+24.0%
+5.8% vs S&P 500
3Y
+94.9%
+30.6% vs S&P 500
Jim Simons's latest portfolio (Q3 2025) holds 3,457 stocks worth $75.8B. Top holdings: Palantir Technologies Inc. (PLTR), NVIDIA Corporation (NVDA), Roblox Corporation (RBLX).Biggest last-quarter moves:

Renaissance Technologies LLC Holdings · 3457

Q3 2025 · Showing 15 positions from the selected holding view.
Stock % Avg. buy price Estimated gain Quarter-end price Last transaction
PSoftware - InfrastructurePalantir Technologies Inc. (PLTR) 2.1%
Avg. buy price $14.20 Estimated gain+1,184.4%Quarter-end price $182.42 Last transaction Reduced· Q3 2025Sold 36.6% of shares
P 2.1% $14.20 +1,184.4% $182.42 Reduced· Q3 2025Sold 36.6% of shares
NSemiconductorsNVIDIA Corporation (NVDA) 1.4%
Avg. buy price $121.46 Estimated gain+53.1%Quarter-end price $185.94 Last transaction Reduced· Q3 2025Sold 24.2% of shares
N 1.4% $121.46 +53.1% $185.94 Reduced· Q3 2025Sold 24.2% of shares
RElectronic Gaming & MultimediaRoblox Corporation (RBLX) 1.3%
Avg. buy price $53.70 Estimated gain+157.9%Quarter-end price $138.52 Last transaction Added· Q3 2025Increased shares by 12.8%
R 1.3% $53.70 +157.9% $138.52 Added· Q3 2025Increased shares by 12.8%
U 1.2% $336.31 +24.7% $419.21 Added· Q2 2025Increased shares by 0.6%
VSoftware - InfrastructureVeriSign, Inc. (VRSN) 1.2%
Avg. buy price $202.88 Estimated gain+37.8%Quarter-end price $279.57 Last transaction Reduced· Q3 2025Sold 3.0% of shares
V 1.2% $202.88 +37.8% $279.57 Reduced· Q3 2025Sold 3.0% of shares
ASoftware - ApplicationAppLovin Corporation (APP) 0.9%
Avg. buy price $302.51 Estimated gain+137.5%Quarter-end price $718.54 Last transaction Reduced· Q3 2025Sold 27.5% of shares
A 0.9% $302.51 +137.5% $718.54 Reduced· Q3 2025Sold 27.5% of shares
MSoftware - InfrastructureMicrosoft Corporation (MSFT) 0.9%
Avg. buy price $481.29 Estimated gain+6.9%Quarter-end price $514.72 Last transaction Added· Q3 2025Increased shares by 248.2%
M 0.9% $481.29 +6.9% $514.72 Added· Q3 2025Increased shares by 248.2%
KGoldKinross Gold Corporation (KGC) 0.9%
Avg. buy price $7.02 Estimated gain+254.1%Quarter-end price $24.85 Last transaction Reduced· Q3 2025Sold 22.1% of shares
K 0.9% $7.02 +254.1% $24.85 Reduced· Q3 2025Sold 22.1% of shares
EBiotechnologyExelixis, Inc. (EXEL) 0.8%
Avg. buy price $23.45 Estimated gain+76.1%Quarter-end price $41.30 Last transaction Reduced· Q3 2025Sold 2.3% of shares
E 0.8% $23.45 +76.1% $41.30 Reduced· Q3 2025Sold 2.3% of shares
FGoldFranco-Nevada Corporation (FNV) 0.8%
Avg. buy price $125.77 Estimated gain+77.2%Quarter-end price $222.91 Last transaction Reduced· Q3 2025Sold 12.5% of shares
F 0.8% $125.77 +77.2% $222.91 Reduced· Q3 2025Sold 12.5% of shares
GInternet Content & InformationAlphabet Inc. (GOOGL) 0.8%
Avg. buy price $209.33 Estimated gain+15.1%Quarter-end price $240.88 Last transaction Added· Q3 2025Increased shares by 110355.4%
G 0.8% $209.33 +15.1% $240.88 Added· Q3 2025Increased shares by 110355.4%
GDrug Manufacturers - GeneralGilead Sciences, Inc. (GILD) 0.8%
Avg. buy price $74.33 Estimated gain+49.3%Quarter-end price $111.00 Last transaction Reduced· Q3 2025Sold 3.6% of shares
G 0.8% $74.33 +49.3% $111.00 Reduced· Q3 2025Sold 3.6% of shares
DInternet Content & InformationDoorDash, Inc. (DASH) 0.7%
Avg. buy price $123.01 Estimated gain+118.9%Quarter-end price $269.28 Last transaction Reduced· Q3 2025Sold 20.6% of shares
D 0.7% $123.01 +118.9% $269.28 Reduced· Q3 2025Sold 20.6% of shares
HMedical - Equipment & ServicesHims & Hers Health, Inc. (HIMS) 0.7%
Avg. buy price $46.66 Estimated gain+21.5%Quarter-end price $56.72 Last transaction Added· Q3 2025Increased shares by 32.4%
H 0.7% $46.66 +21.5% $56.72 Added· Q3 2025Increased shares by 32.4%
RInternet Content & InformationReddit, Inc. (RDDT) 0.7%
Avg. buy price $150.33 Estimated gain+53.0%Quarter-end price $229.99 Last transaction Added· Q3 2025Increased shares by 38.7%
R 0.7% $150.33 +53.0% $229.99 Added· Q3 2025Increased shares by 38.7%
Data through Q3 2025 · filed Nov 13, 2025
15 of 3457
Show all 3457 holdings

Biggest position changes

In Q3 2025: 529 new, 1446 added, 1455 reduced, 376 exited.
Q1 2026Q4 2025Q3 2025Q2 2025
Largest disclosed changes in Q3 2025, ranked by estimated dollar change using the quarter's average market price.
Reduced or exitedBought or added
H Robinhood Markets, Inc. (HOOD) −$1.0B P Palantir Technologies Inc. (PLTR) −$799M A Apple Inc. (AAPL) −$516M N Netflix, Inc. (NFLX) −$326M N NVIDIA Corporation (NVDA) −$312M G GE Vernova Inc. (GEV) −$279M C Coinbase Global, Inc. (COIN) −$259M G GE Aerospace (GE) Exited−$250M G Alphabet Inc. (GOOGL) +$545M M Microsoft Corporation (MSFT) +$479M G Alphabet Inc. (GOOG) New+$361M M Meta Platforms, Inc. (META) +$350M K The Coca-Cola Company (KO) +$266M A Accenture plc (ACN) +$211M C Comcast Corporation (CMCSA) +$203M I Intuit Inc. (INTU) New+$185M
Other share changes without a dollar estimate, ranked by size.
Reduced or exitedBought or added
I Itaú Unibanco Holding S.A. (ITUB) −12.5M
Baytex Energy Corp −9.6M
B Brf S.a. (BRFS) Exited−8.5M E Telefonaktiebolaget LM Ericsson (publ) (ERIC) −8.4M B Banco Bradesco S.A. (BBD) −7.8M H Haleon plc (HLN) −6.4M B B2Gold Corp. (BTG) −5.9M
Blackberry Ltd −5.7M
D Denison Mines Corp. (DNN) +8.0M I IonQ, Inc. (IONQ) +4.1M S Sangamo Therapeutics, Inc. (SGMO) +3.3M
Kindly Md Inc New+3.3M
A Autolus Therapeutics plc (AUTL) +3.1M M Mobileye Global Inc. (MBLY) +2.3M F F.N.B. Corporation (FNB) +2.3M A Adaptimmune Therapeutics plc (ADAP) +2.2M

New this quarter

G Alphabet Inc. (GOOG) New· Q3 2025 I Intuit Inc. (INTU) New· Q3 2025 H Honeywell International Inc. (HON) New· Q3 2025 M Micron Technology, Inc. (MU) New· Q3 2025 A Analog Devices, Inc. (ADI) New· Q3 2025 T Tesla, Inc. (TSLA) New· Q3 2025 T Texas Instruments Incorporated (TXN) New· Q3 2025 P The Procter & Gamble Company (PG) New· Q3 2025

Portfolio composition

Largest holdings in Q3 2025, sized by their share of the disclosed portfolio. This shows what is owned, not what changed.

Palantir Technologies Inc. (PLTR): 2.1%NVIDIA Corporation (NVDA): 1.4%Roblox Corporation (RBLX): 1.3%United Therapeutics Corporation (UTHR): 1.2%VeriSign, Inc. (VRSN): 1.2%Other holdings: 92.9%
P Palantir Technologies Inc. (PLTR) 2.1%
N NVIDIA Corporation (NVDA) 1.4%
R Roblox Corporation (RBLX) 1.3%
U United Therapeutics Corporation (UTHR) 1.2%
V VeriSign, Inc. (VRSN) 1.2%
Other holdings 92.9%
Show more

Portfolio over time

Each band is a top holding's share of the disclosed portfolio, quarter by quarter; the rest is grouped as other.
3Y5YAll
0%50%100%202120222023202420252026
United Therapeutics Corporation (UTHR)Palantir Technologies Inc. (PLTR)Apple Inc. (AAPL)Kinross Gold Corporation (KGC)Micron Technology, Inc. (MU)VeriSign, Inc. (VRSN)Exelixis, Inc. (EXEL)Franco-Nevada Corporation (FNV)Other holdings

Investors with similar portfolios

Ken GriffinCitadel Advisors LLCAlso holds iShares Tr and NVIDIA Corporation (NVDA)InvescoInvesco Ltd.Also holds NVIDIA Corporation (NVDA) and Apple Inc. (AAPL)Ken FisherFisher Asset Management, LLCAlso holds iShares Tr 7 10yr Tr Bd ETF and Apple Inc. (AAPL)Warren BuffettBerkshire Hathaway IncAlso holds Apple Inc. (AAPL) and American Express Company (AXP)Cathie WoodARK Investment Management LLCAlso holds Tesla, Inc. (TSLA) and Palantir Technologies Inc. (PLTR)Jeremy GranthamGrantham, Mayo, Van Otterloo & Co. LLCAlso holds Microsoft Corporation (MSFT) and Apple Inc. (AAPL)

About Jim Simons and Renaissance Technologies LLC

Jim Simons (1938–2024) was a mathematician and investor who founded Renaissance Technologies and brought mathematical modeling to investment management. This page shows Renaissance Technologies' quarterly Form 13F report of certain United States listed long positions, not Simons's personal account, the Medallion Fund, or the firm's complete investment activity.

SEC filing history for Renaissance Technologies LLC

Jim Simons FAQ

Profile refreshed July 20, 2026

What stocks does Jim Simons own?

As of the Q3 2025 filing, Jim Simons's largest disclosed holdings are Palantir Technologies Inc. (PLTR), NVIDIA Corporation (NVDA), Roblox Corporation (RBLX). The table shows 15 of 3,457 positions by default, with an exact-count control for the remaining rows. Disclosed shares and values remain visible even when a separate market-price estimate is unavailable.

What did Jim Simons buy last quarter?

The biggest disclosed buys in Q3 2025 were Alphabet Inc. (GOOGL), Microsoft Corporation (MSFT), Alphabet Inc. (GOOG), based on the Renaissance Technologies LLC 13F filing. New positions are marked "new" in the table above.

What did Jim Simons sell last quarter?

The biggest reductions in Q3 2025 were Robinhood Markets, Inc. (HOOD), Palantir Technologies Inc. (PLTR), Apple Inc. (AAPL). The filing comparison contains 376 full exits, summarized in the activity view above.

How big is Jim Simons's portfolio?

The latest 13F discloses $75.8B across 3,457 positions in Q3 2025. 13F filings cover US-listed long positions only; cash and short positions are not disclosed.

How up to date is this?

Funds file 13Fs up to 45 days after each quarter ends, so this portfolio reflects Q3 2025, the latest disclosed quarter. The filing date is shown with every table.

Where does the Renaissance Technologies LLC portfolio data come from?

Non-rejected, non-superseded SEC Form 13F filings for Renaissance Technologies LLC provide the Q3 2025 holdings, disclosed values, and filing date shown here. WhoBought prefers filings whose value units validate and labels a sparse filing when validation is unavailable. Industry labels come from the local company classification record.

How is performance calculated?

Performance uses daily closing prices for holdings with available market-price history. It covers the priced share of disclosed value (65%); holdings without sufficient price history are excluded from the calculation.

Who was Jim Simons?

Jim Simons was an American mathematician, investor, and philanthropist who founded Renaissance Technologies. He lived from 1938 to 2024.

When did Jim Simons die?

Simons died in New York City on May 10, 2024, at age 86. Renaissance Technologies continues as a firm; this page tracks the firm's filings, not a portfolio he still managed.

Where did Jim Simons study mathematics?

He completed a mathematics degree at MIT in 1958 and earned a PhD from the University of California, Berkeley, in 1961, when he was 23.

What was Jim Simons known for in mathematics?

Simons worked in geometry and topology and, with Shiing-Shen Chern, developed ideas now associated with Chern-Simons theory. His research later became important in mathematical physics.

Was Jim Simons a codebreaker?

Yes. He worked on codebreaking for the National Security Agency in 1964 and then joined the Institute for Defense Analyses, while also teaching mathematics at MIT and Harvard.

How did Jim Simons start Renaissance Technologies?

He first founded an investment firm called Monemetrics, then renamed it Renaissance Technologies. The firm developed trading models from market data and launched the Medallion Fund in 1988.

What was Jim Simons's investment strategy?

Simons built teams of mathematicians and scientists to search market data for patterns. Renaissance used mathematical models and algorithms rather than relying mainly on conventional stock-picking judgments.

What was the Medallion Fund's track record?

Wikipedia reports an average annual return of 66.1 percent before fees and 39.1 percent after fees from 1988 through 2018. Those are historical Medallion figures, not the return of the 13F holdings displayed here.

Can outside investors invest in the Medallion Fund?

No. Medallion is closed to outside investors. Simons retired at the start of 2010 and remained Renaissance's nonexecutive chairman afterward.

Is this Jim Simons's personal portfolio or the Medallion Fund?

Neither. The holdings table shows Renaissance Technologies' latest Form 13F disclosure, while the quarterly-changes view shows how those reported positions moved. A 13F does not reveal the firm's full quantitative strategy, shorts, or every Medallion trade.