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 |
NVIDIA
NVDA
|
+$798M |
| 2 |
Netflix
NFLX
|
+$608M |
| 3 |
UnitedHealth
UNH
|
+$517M |
| 4 |
Apple
AAPL
|
+$461M |
| 5 |
GE Vernova
GEV
|
+$296M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$527M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$372M |
| 3 |
Meta Platforms (Facebook)
META
|
+$362M |
| 4 |
Advanced Micro Devices
AMD
|
+$328M |
| 5 |
Palantir
PLTR
|
+$327M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 19.57% |
| 2 | Healthcare | 15.8% |
| 3 | Consumer Discretionary | 12.38% |
| 4 | Financials | 11.53% |
| 5 | Industrials | 8.92% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
SOHU
976
Sohu.com
SOHU
$369M
| $11.7M | 0.02% |
877,373
-23,000
| -3% | -$244K |
|
977
Middleby
MIDD
$5.38B
| $11.7M | 0.02% |
81,070
+68,100
| +525% | +$9.59M |
|
978
Intapp
INTA
$3.05B
| $11.7M | 0.02% |
225,900
+95,800
| +74% | +$5.23M |
|
979
Sylvamo
SLVM
$1.53B
| $11.6M | 0.02% |
231,500
+58,100
| +34% | +$3.27M |
|
980
Equinox Gold
EQX
$13.5B
| $11.6M | 0.02% |
2,010,600
-71,993
| -3% | -$468K |
|
981
Astronics
ATRO
$4.34B
| $11.5M | 0.02% |
413,880
+72,600
| +21% | +$1.7M |
|
|
FOLD
982
DELISTED
Amicus Therapeutics
FOLD
| $11.5M | 0.02% |
2,013,593
+451,600
| +29% | +$2.91M |
|
983
First Horizon
FHN
$12.3B
| $11.5M | 0.02% |
543,500
-350,600
| -39% | -$6.68M |
|
984
Stellantis
STLA
$20.2B
| $11.5M | 0.02% |
1,148,872
+360,427
| +46% | +$3.55M |
|
985
Ducommun
DCO
$3.04B
| $11.5M | 0.02% |
139,200
+12,800
| +10% | +$851K |
|
986
Safety Insurance
SAFT
$1.52B
| $11.5M | 0.02% |
144,607
+1,707
| +1% | +$135K |
|
987
FerroAtlántica
GSM
$832M
| $11.4M | 0.02% |
3,119,094
+35,600
| +1% | +$131K |
|
988
ICU Medical
ICUI
$4.48B
| $11.4M | 0.02% |
86,600
+77,800
| +884% | +$10.5M |
|
989
Medifast
MED
$130M
| $11.4M | 0.02% |
813,310
-75,618
| -9% | -$994K |
|
|
BAND
990
Bandwidth Inc
BAND
$1.67B
| $11.4M | 0.02% |
717,600
+14,500
| +2% | +$197K |
|
|
MRP
991
Millrose Properties Inc
MRP
$4.94B
| $11.4M | 0.02% |
+398,600
| New | +$10.5M |
|
|
OPTU
992
Optimum Communications Inc
OPTU
$227M
| $11.4M | 0.02% |
5,305,500
+1,323,100
| +33% | +$3.1M |
|
993
Clearway Energy Class C
CWEN
$7.06B
| $11.3M | 0.02% |
354,600
+106,900
| +43% | +$3.19M |
|
994
AbCellera Biologics
ABCL
$3.18B
| $11.3M | 0.02% |
3,307,429
+413,400
| +14% | +$1.03M |
|
995
SentinelOne
S
$7.64B
| $11.3M | 0.02% |
+619,084
| New | +$11.3M |
|
996
Varonis Systems
VRNS
$4.82B
| $11.3M | 0.02% |
222,900
-77,500
| -26% | -$3.52M |
|
997
MasTec
MTZ
$22.6B
| $11.3M | 0.02% |
+66,323
| New | +$9.55M |
|
998
WesBanco
WSBC
$4.07B
| $11.2M | 0.02% |
355,481
+26,700
| +8% | +$808K |
|
999
Healthpeak Properties
DOC
$14.2B
| $11.2M | 0.02% |
641,968
-153,300
| -19% | -$2.72M |
|
1000
Gentex
GNTX
$4.93B
| $11.2M | 0.01% |
510,996
+332,200
| +186% | +$7.26M |
|
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Jim Simons's Q2 2025 Portfolio in Review
As of Q2 2025, Jim Simons held 4,018 positions worth $75.2B, up 14% from $66.1B the previous quarter. Its ten largest holdings account for 12% of the portfolio.
Jim Simons's Q2 2025 filing shows 612 new, 1,577 increased, 1,314 reduced and 496 closed positions. Its largest new stake was UnitedHealth: 1,352,129 shares worth $422M. The largest sale was Broadcom, an estimated $527M.
By sector, the portfolio is most concentrated in Technology at 20% of assets, up from 17% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Jim Simons's largest Q2 2025 buy was UnitedHealth: 1,352,129 shares worth $422M.
- Jim Simons added most to NVIDIA in Q2 2025, an estimated $798M increase.
- Jim Simons's biggest Q2 2025 reduction was Broadcom, cutting an estimated $527M.
- Jim Simons fully exited Advanced Micro Devices in Q2 2025, selling an estimated $328M.
- Jim Simons's ten largest holdings make up 12% of its $75.2B portfolio in Q2 2025.
- Jim Simons opened 612 new positions and closed 496 in Q2 2025.
- Jim Simons's portfolio value rose 14% quarter-over-quarter to $75.2B.
Based on Renaissance Technologies's 13F filing for Q2 2025, filed 13 Aug 2025.