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 | |
|---|---|---|---|---|---|---|
1001
Alexandria Real Estate Equities
ARE
$8.27B
| $11.2M | 0.01% |
154,544
+130,544
| +544% | +$9.7M |
|
1002
Jackson Financial
JXN
$8.85B
| $11.2M | 0.01% |
+126,200
| New | +$10.2M |
|
1003
NVE Corp
NVEC
$591M
| $11.2M | 0.01% |
151,900
+1,600
| +1% | +$106K |
|
1004
UL Solutions
ULS
$15.5B
| $11.2M | 0.01% |
153,392
-131,100
| -46% | -$8.58M |
|
1005
Adeia
ADEA
$3.1B
| $11.1M | 0.01% |
785,643
-36,237
| -4% | -$469K |
|
1006
Enel Chile
ENIC
$6.05B
| $11.1M | 0.01% |
3,056,888
-1,000
| -0% | -$3.53K |
|
1007
Perrigo
PRGO
$1.76B
| $11.1M | 0.01% |
415,196
+33,500
| +9% | +$877K |
|
1008
Embotelladora Andina Series B
AKO.B
$4.89B
| $11.1M | 0.01% |
455,181
-9,800
| -2% | -$245K |
|
1009
Merck
MRK
$328B
| $11.1M | 0.01% |
139,820
-81,872
| -37% | -$6.51M |
|
1010
T. Rowe Price
TROW
$23.8B
| $11M | 0.01% |
114,500
-43,300
| -27% | -$3.98M |
|
1011
Star Group
SGU
$417M
| $11M | 0.01% |
941,593
-8,652
| -0.9% | -$106K |
|
1012
Middlesex Water
MSEX
$1.1B
| $11M | 0.01% |
202,913
+22,500
| +12% | +$1.33M |
|
1013
Westlake Corp
WLK
$10.1B
| $10.9M | 0.01% |
144,200
-135,900
| -49% | -$11.1M |
|
1014
Prologis
PLD
$134B
| $10.9M | 0.01% |
104,067
+20,800
| +25% | +$2.18M |
|
1015
Salesforce
CRM
$158B
| $10.9M | 0.01% |
40,084
-555,638
| -93% | -$149M |
|
1016
Vista Energy
VIST
$7.31B
| $10.8M | 0.01% |
226,683
-122,700
| -35% | -$5.81M |
|
1017
Dycom Industries
DY
$12.3B
| $10.8M | 0.01% |
+44,300
| New | +$8.72M |
|
|
TEN
1018
Tsakos Energy Navigation Ltd
TEN
$1.18B
| $10.7M | 0.01% |
560,045
+203,065
| +57% | +$3.56M |
|
1019
Lifeway Foods
LWAY
$447M
| $10.7M | 0.01% |
435,771
-10,700
| -2% | -$254K |
|
1020
Universal Insurance Holdings
UVE
$1.18B
| $10.7M | 0.01% |
386,500
+3,700
| +1% | +$93.9K |
|
1021
Franklin Electric
FELE
$4.75B
| $10.7M | 0.01% |
119,400
+91,400
| +326% | +$8.01M |
|
1022
Atlantic Union Bankshares
AUB
$6.06B
| $10.7M | 0.01% |
342,002
+116,122
| +51% | +$3.35M |
|
1023
Ionis Pharmaceuticals
IONS
$9.39B
| $10.7M | 0.01% |
270,714
+117,200
| +76% | +$3.84M |
|
1024
Cloudflare
NET
$111B
| $10.7M | 0.01% |
+54,600
| New | +$7.93M |
|
1025
Sarepta Therapeutics
SRPT
$1.94B
| $10.7M | 0.01% |
+624,478
| New | +$26.6M |
|
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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.