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 | |
|---|---|---|---|---|---|---|
976
W.P. Carey
WPC
$16.1B
| $12.6M | 0.02% |
185,800
+62,800
| +51% | +$4.11M |
|
977
Atmos Energy
ATO
$28.7B
| $12.5M | 0.02% |
73,400
+52,900
| +258% | +$8.54M |
|
978
FIGS
FIGS
$2.4B
| $12.5M | 0.02% |
1,868,000
+290,700
| +18% | +$1.92M |
|
979
Customers Bancorp
CUBI
$2.8B
| $12.5M | 0.02% |
191,120
+68,400
| +56% | +$4.5M |
|
980
Consolidated Water Co
CWCO
$505M
| $12.5M | 0.02% |
353,367
+25,400
| +8% | +$808K |
|
981
Maravai LifeSciences
MRVI
$861M
| $12.4M | 0.02% |
4,318,089
+131,900
| +3% | +$337K |
|
982
Manulife Financial
MFC
$72.6B
| $12.4M | 0.02% |
397,624
+133,100
| +50% | +$4.1M |
|
983
Arch Capital
ACGL
$33.2B
| $12.3M | 0.02% |
+136,100
| New | +$12.2M |
|
|
LKFT
984
Lakefront Biotherapeutics American Depositary Shares
LKFT
$1.84B
| $12.3M | 0.02% |
356,200
-108,500
| -23% | -$3.47M |
|
985
First Citizens BancShares
FCNCA
$25.6B
| $12.3M | 0.02% |
+6,886
| New | +$13.6M |
|
986
Lincoln Educational Services
LINC
$945M
| $12.3M | 0.02% |
523,678
-11,100
| -2% | -$238K |
|
987
BGC Group
BGC
$5.12B
| $12.3M | 0.02% |
1,298,348
+61,300
| +5% | +$614K |
|
988
NewMarket
NEU
$8.72B
| $12.3M | 0.02% |
14,800
-8,900
| -38% | -$6.86M |
|
989
Huntsman Corp
HUN
$1.78B
| $12.2M | 0.02% |
1,363,200
+623,800
| +84% | +$6.55M |
|
990
Safety Insurance
SAFT
$1.52B
| $12.2M | 0.02% |
173,000
+28,393
| +20% | +$2.06M |
|
991
10x Genomics
TXG
$7.52B
| $12.2M | 0.02% |
1,044,921
-427,334
| -29% | -$5.57M |
|
992
Essential Utilities
WTRG
$11.3B
| $12.2M | 0.02% |
305,317
+172,848
| +130% | +$6.59M |
|
993
iShares China Large-Cap ETF
FXI
$4.16B
| $12.1M | 0.02% |
295,000
+177,400
| +151% | +$6.86M |
|
994
CVS Health
CVS
$121B
| $12.1M | 0.02% |
160,900
-421,953
| -72% | -$28.9M |
|
995
iShares Short Maturity Bond ETF
NEAR
$4.88B
| $12.1M | 0.02% |
236,100
-103,193
| -30% | -$5.27M |
|
996
Addus HomeCare
ADUS
$2.2B
| $12.1M | 0.02% |
102,600
+21,800
| +27% | +$2.45M |
|
997
Maximus
MMS
$2.94B
| $12.1M | 0.02% |
132,200
-34,800
| -21% | -$2.82M |
|
998
Costco
COST
$427B
| $12.1M | 0.02% |
+13,024
| New | +$12.5M |
|
|
OPTU
999
Optimum Communications Inc
OPTU
$227M
| $12M | 0.02% |
4,995,400
-310,100
| -6% | -$761K |
|
1000
United Bankshares
UBSI
$6.66B
| $12M | 0.02% |
323,033
-142,800
| -31% | -$5.32M |
|
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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.