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 | |
|---|---|---|---|---|---|---|
801
Vanda Pharmaceuticals
VNDA
$304M
| $17.3M | 0.02% |
3,476,925
+29,465
| +0.9% | +$136K |
|
802
Leonardo DRS
DRS
$11.9B
| $17.3M | 0.02% |
381,994
+124,794
| +49% | +$5.44M |
|
|
MRX
803
Marex Group Limited Ordinary Shares
MRX
$5.2B
| $17.3M | 0.02% |
514,887
+93,800
| +22% | +$3.39M |
|
804
C3.ai
AI
$1.58B
| $17M | 0.02% |
980,600
+172,600
| +21% | +$3.6M |
|
805
First American
FAF
$7.56B
| $17M | 0.02% |
264,500
+66,555
| +34% | +$4.2M |
|
806
Nathan's Famous
NATH
$397M
| $17M | 0.02% |
153,356
-12,089
| -7% | -$1.27M |
|
807
Teradata
TDC
$2.57B
| $17M | 0.02% |
788,595
-376,762
| -32% | -$8.11M |
|
808
Tetra Tech
TTEK
$9.33B
| $16.9M | 0.02% |
507,700
+115,200
| +29% | +$4.19M |
|
809
Graham Corp
GHM
$1.3B
| $16.9M | 0.02% |
308,668
-16,400
| -5% | -$839K |
|
810
Idacorp
IDA
$8.16B
| $16.9M | 0.02% |
128,200
+24,700
| +24% | +$3.06M |
|
811
AbCellera Biologics
ABCL
$3.36B
| $16.9M | 0.02% |
3,360,729
+53,300
| +2% | +$235K |
|
812
Acuity Brands
AYI
$10.8B
| $16.9M | 0.02% |
49,000
-15,600
| -24% | -$4.97M |
|
813
Weis Markets
WMK
$1.77B
| $16.9M | 0.02% |
234,736
-21,400
| -8% | -$1.56M |
|
814
Arhaus
ARHS
$1.37B
| $16.8M | 0.02% |
1,584,800
+1,095,300
| +224% | +$11.5M |
|
815
Strategic Education
STRA
$1.86B
| $16.8M | 0.02% |
195,518
-18,800
| -9% | -$1.51M |
|
816
CareDx
CDNA
$2.45B
| $16.8M | 0.02% |
1,155,598
-100
| -0% | -$1.43K |
|
817
Healthcare Realty
HR
$6.58B
| $16.8M | 0.02% |
+929,372
| New | +$15.7M |
|
818
Macy's
M
$6.27B
| $16.7M | 0.02% |
934,064
+294,500
| +46% | +$4.17M |
|
819
BridgeBio Pharma
BBIO
$15.9B
| $16.7M | 0.02% |
322,246
+76,300
| +31% | +$3.72M |
|
820
Visteon
VC
$2.86B
| $16.7M | 0.02% |
139,600
-24,700
| -15% | -$2.91M |
|
821
Applied Industrial Technologies
AIT
$13.2B
| $16.7M | 0.02% |
+63,950
| New | +$16.8M |
|
822
ASE Group
ASX
$103B
| $16.7M | 0.02% |
+1,504,285
| New | +$15.7M |
|
823
Gartner
IT
$11.6B
| $16.5M | 0.02% |
62,909
-151,100
| -71% | -$44.1M |
|
824
Zeta Global
ZETA
$7.44B
| $16.5M | 0.02% |
829,298
-1,461,112
| -64% | -$26.2M |
|
825
Eversource Energy
ES
$27.2B
| $16.5M | 0.02% |
231,580
-206,400
| -47% | -$13.5M |
|
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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.