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 | |
|---|---|---|---|---|---|---|
|
MASI
1626
DELISTED
Masimo
MASI
| $4.27M | 0.01% |
25,377
+10,377
| +69% | +$1.66M |
|
1627
ESAB
ESAB
$5.29B
| $4.27M | 0.01% |
+35,400
| New | +$4.28M |
|
|
VIGL
1628
DELISTED
Vigil Neuroscience
VIGL
| $4.26M | 0.01% |
535,800
+316,400
| +144% | +$1.42M |
|
1629
Jack Henry & Associates
JKHY
$11.1B
| $4.26M | 0.01% |
+23,619
| New | +$4.19M |
|
1630
Simply Good Foods
SMPL
$989M
| $4.25M | 0.01% |
+134,500
| New | +$4.68M |
|
|
SOBO
1631
South Bow Corp
SOBO
$7.64B
| $4.25M | 0.01% |
163,880
+119,380
| +268% | +$3.04M |
|
1632
Arhaus
ARHS
$1.37B
| $4.24M | 0.01% |
+489,500
| New | +$4.09M |
|
1633
Veeco
VECO
$3.28B
| $4.24M | 0.01% |
208,810
+18,900
| +10% | +$373K |
|
1634
J.M. Smucker
SJM
$12.9B
| $4.23M | 0.01% |
43,100
-12,679
| -23% | -$1.39M |
|
1635
PetMed Express
PETS
$43.4M
| $4.23M | 0.01% |
1,273,869
-7,300
| -0.6% | -$26K |
|
1636
CytomX Therapeutics
CTMX
$730M
| $4.23M | 0.01% |
1,862,200
+706,200
| +61% | +$1.14M |
|
1637
Novavax
NVAX
$1.34B
| $4.21M | 0.01% |
667,647
+162,400
| +32% | +$1.08M |
|
1638
Green Plains
GPRE
$1.09B
| $4.2M | 0.01% |
696,129
+341,000
| +96% | +$1.5M |
|
1639
American Express Global Business Travel
GBTG
$4.94B
| $4.19M | 0.01% |
665,220
+151,600
| +30% | +$974K |
|
|
VZLA
1640
Vizsla Silver
VZLA
$1.31B
| $4.18M | 0.01% |
1,422,421
+447,521
| +46% | +$1.17M |
|
1641
NBT Bancorp
NBTB
$2.79B
| $4.18M | 0.01% |
100,573
+62,734
| +166% | +$2.61M |
|
|
ALEX
1642
DELISTED
Alexander & Baldwin
ALEX
| $4.15M | 0.01% |
232,831
-19,400
| -8% | -$338K |
|
1643
iShares S&P 500 Growth ETF
IVW
$77.9B
| $4.15M | 0.01% |
+37,700
| New | +$3.73M |
|
1644
Perella Weinberg Partners
PWP
$1.33B
| $4.15M | 0.01% |
213,600
-37,700
| -15% | -$666K |
|
1645
Fox Factory Holding Corp
FOXF
$886M
| $4.14M | 0.01% |
159,693
+72,900
| +84% | +$1.71M |
|
|
PPIH
1646
Perma-Pipe International
PPIH
$216M
| $4.12M | 0.01% |
180,093
-7,900
| -4% | -$114K |
|
|
CON
1647
Concentra Group Holdings
CON
$4.48B
| $4.11M | 0.01% |
199,931
-42,200
| -17% | -$901K |
|
1648
Evolv Technologies
EVLV
$1.04B
| $4.1M | 0.01% |
657,100
+441,300
| +204% | +$2.04M |
|
1649
SGHC Ltd
SGHC
$6.65B
| $4.1M | 0.01% |
373,501
-485,800
| -57% | -$4.11M |
|
|
SEMR
1650
DELISTED
Semrush
SEMR
| $4.09M | 0.01% |
452,300
+104,600
| +30% | +$1.01M |
|
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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.