Jim Simons Renaissance Technologies
Jim Simons is the founder of Renaissance Technologies, one of the most successful quantitative hedge funds in the world. Before his career in finance, he served as a mathematics professor and made significant contributions to differential geometry. Simons applied his analytical expertise to develop sophisticated, algorithm-driven trading strategies, earning consistently high returns for investors.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class A
GOOGL
|
+$546M |
| 2 |
Microsoft
MSFT
|
+$480M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$362M |
| 4 |
Meta Platforms (Facebook)
META
|
+$350M |
| 5 |
Coca-Cola
KO
|
+$266M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Robinhood
HOOD
|
+$1.04B |
| 2 |
Palantir
PLTR
|
+$800M |
| 3 |
Apple
AAPL
|
+$516M |
| 4 |
Netflix
NFLX
|
+$326M |
| 5 |
NVIDIA
NVDA
|
+$313M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 21.71% |
| 2 | Healthcare | 15.16% |
| 3 | Consumer Discretionary | 11.81% |
| 4 | Communication Services | 10.53% |
| 5 | Financials | 9.27% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1976
Lindblad Expeditions
LIND
$2.2B
| $2.31M | ﹤0.01% |
180,343
+27,544
| +18% | +$363K |
|
1977
Cato Corp
CATO
$67.9M
| $2.31M | ﹤0.01% |
547,702
-3,600
| -0.7% | -$12.7K |
|
1978
Annexon
ANNX
$867M
| $2.3M | ﹤0.01% |
753,579
-24,321
| -3% | -$60.4K |
|
1979
ESAB
ESAB
$5.27B
| $2.29M | ﹤0.01% |
20,500
-14,900
| -42% | -$1.77M |
|
1980
ARK Innovation ETF
ARKK
$6.42B
| $2.29M | ﹤0.01% |
+26,500
| New | +$2.03M |
|
1981
RLX Technology
RLX
$2.37B
| $2.29M | ﹤0.01% |
869,300
-16,800
| -2% | -$39.9K |
|
1982
Riley Exploration Permian
REPX
$800M
| $2.29M | ﹤0.01% |
84,300
-28,900
| -26% | -$790K |
|
1983
Fulcrum Therapeutics
FULC
$285M
| $2.28M | ﹤0.01% |
248,200
+169,700
| +216% | +$1.23M |
|
1984
State Street Technology Select Sector SPDR ETF
XLK
$124B
| $2.28M | ﹤0.01% |
16,200
+1,600
| +11% | +$212K |
|
|
OPRA
1985
Opera Ltd
OPRA
$1.82B
| $2.28M | ﹤0.01% |
110,500
+23,700
| +27% | +$423K |
|
1986
Black Diamond Therapeutics
BDTX
$116M
| $2.27M | ﹤0.01% |
599,400
+432,300
| +259% | +$1.26M |
|
1987
F&G Annuities & Life
FG
$3.59B
| $2.27M | ﹤0.01% |
72,600
-10,400
| -13% | -$344K |
|
1988
NetSol Technologies
NTWK
$48.3M
| $2.27M | ﹤0.01% |
477,701
+22,300
| +5% | +$93.1K |
|
1989
iMGP DBi Managed Futures Strategy ETF
DBMF
$4.2B
| $2.26M | ﹤0.01% |
82,900
-93,500
| -53% | -$2.45M |
|
1990
Camtek
CAMT
$7.72B
| $2.25M | ﹤0.01% |
21,440
-12,200
| -36% | -$1.09M |
|
1991
Valhi
VHI
$459M
| $2.25M | ﹤0.01% |
142,517
-1,300
| -0.9% | -$21.8K |
|
1992
Petco
WOOF
$805M
| $2.25M | ﹤0.01% |
580,600
-163,900
| -22% | -$549K |
|
|
MNTN
1993
MNTN Inc
MNTN
$937M
| $2.24M | ﹤0.01% |
+121,000
| New | +$2.75M |
|
1994
Xencor
XNCR
$1.74B
| $2.23M | ﹤0.01% |
190,389
+134,789
| +242% | +$1.17M |
|
|
MAZE
1995
Maze Therapeutics
MAZE
$1.51B
| $2.23M | ﹤0.01% |
+86,100
| New | +$1.45M |
|
1996
AC Immune
ACIU
$253M
| $2.23M | ﹤0.01% |
770,419
-57,902
| -7% | -$131K |
|
|
TRTX
1997
TPG RE Finance Trust
TRTX
$609M
| $2.22M | ﹤0.01% |
259,899
-100,200
| -28% | -$884K |
|
1998
Clean Energy Fuels
CLNE
$403M
| $2.22M | ﹤0.01% |
862,100
+277,700
| +48% | +$650K |
|
|
NVOX
1999
Defiance Daily Target 2x Long NVO ETF
NVOX
$33.5M
| $2.22M | ﹤0.01% |
+78,475
| New | +$2.7M |
|
2000
Goldman Sachs ActiveBeta US Large Cap Equity ETF
GSLC
$16.1B
| $2.21M | ﹤0.01% |
17,000
+12,400
| +270% | +$1.56M |
|
Similar funds
Jim Simons's Q3 2025 Portfolio in Review
As of Q3 2025, Jim Simons held 4,038 positions worth $75.8B, up 0.77% from $75.2B the previous quarter. Its ten largest holdings account for 11% of the portfolio.
Jim Simons withdrew a net $5.41B in Q3 2025, closing 581 positions and reducing 1,457 holdings. Its most notable exit was GE Aerospace, an estimated $235M position sold in full.
By sector, the portfolio is most concentrated in Technology at 22% of assets, up from 20% a quarter earlier, followed by Healthcare and Consumer Discretionary.
Against the trend, Jim Simons opened a new position in Alphabet (Google) Class C worth $419M.
- Jim Simons's largest Q3 2025 buy was Alphabet (Google) Class C: 1,720,002 shares worth $419M.
- Jim Simons added most to Alphabet (Google) Class A in Q3 2025, an estimated $546M increase.
- Jim Simons's biggest Q3 2025 reduction was Robinhood, cutting an estimated $1.04B.
- Jim Simons fully exited GE Aerospace in Q3 2025, selling an estimated $235M.
- Jim Simons's ten largest holdings make up 11% of its $75.8B portfolio in Q3 2025.
- Jim Simons opened 516 new positions and closed 581 in Q3 2025.
- Jim Simons's portfolio value rose 0.77% quarter-over-quarter to $75.8B.
Based on Renaissance Technologies's 13F filing for Q3 2025, filed 13 Nov 2025.