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 | |
|---|---|---|---|---|---|---|
901
CTS Corp
CTS
$1.82B
| $14.1M | 0.02% |
353,826
+141,484
| +67% | +$5.87M |
|
902
Artisan Partners
APAM
$2.97B
| $14.1M | 0.02% |
324,923
-67,500
| -17% | -$3.11M |
|
903
TransAlta
TAC
$3.92B
| $14.1M | 0.02% |
1,030,000
-357,400
| -26% | -$4.4M |
|
904
FerroAtlántica
GSM
$818M
| $14M | 0.02% |
3,087,138
-31,956
| -1% | -$137K |
|
905
Ducommun
DCO
$3.04B
| $14M | 0.02% |
146,082
+6,882
| +5% | +$622K |
|
906
MiMedx Group
MDXG
$624M
| $14M | 0.02% |
2,008,227
-99,550
| -5% | -$692K |
|
907
National Fuel Gas
NFG
$7.77B
| $14M | 0.02% |
151,400
-20,221
| -12% | -$1.76M |
|
908
Globus Medical
GMED
$11.5B
| $14M | 0.02% |
243,918
+138,500
| +131% | +$7.98M |
|
909
Bright Horizons
BFAM
$3.76B
| $14M | 0.02% |
+128,600
| New | +$14.9M |
|
910
Palo Alto Networks
PANW
$323B
| $13.9M | 0.02% |
68,500
-15,300
| -18% | -$2.93M |
|
911
Costamare
CMRE
$1.71B
| $13.9M | 0.02% |
1,169,332
+24,100
| +2% | +$264K |
|
912
NovoCure
NVCR
$2.05B
| $13.9M | 0.02% |
1,072,854
-227,200
| -17% | -$3.04M |
|
913
Qualcomm
QCOM
$173B
| $13.9M | 0.02% |
+83,261
| New | +$13.2M |
|
914
California Water Service
CWT
$3.09B
| $13.8M | 0.02% |
301,116
+20,116
| +7% | +$926K |
|
915
Zebra Technologies
ZBRA
$17.9B
| $13.8M | 0.02% |
46,431
-30,100
| -39% | -$9.62M |
|
916
Adeia
ADEA
$3.1B
| $13.8M | 0.02% |
820,343
+34,700
| +4% | +$514K |
|
917
DigitalBridge
DBRG
$2.95B
| $13.8M | 0.02% |
1,175,676
-423,242
| -26% | -$4.73M |
|
918
International Seaways
INSW
$4.58B
| $13.7M | 0.02% |
296,900
-118,500
| -29% | -$5.12M |
|
919
HCI Group
HCI
$2.28B
| $13.6M | 0.02% |
71,019
+21,900
| +45% | +$3.47M |
|
920
Dorman Products
DORM
$3.97B
| $13.6M | 0.02% |
87,400
-18,700
| -18% | -$2.68M |
|
921
First Busey Corp
BUSE
$2.58B
| $13.6M | 0.02% |
587,546
-64,500
| -10% | -$1.54M |
|
922
Fiverr
FVRR
$311M
| $13.6M | 0.02% |
556,299
+34,100
| +7% | +$836K |
|
923
Bank of Hawaii
BOH
$3.13B
| $13.5M | 0.02% |
206,200
+58,000
| +39% | +$3.87M |
|
924
Napco Security Technologies
NSSC
$1.39B
| $13.5M | 0.02% |
315,100
+16,300
| +5% | +$565K |
|
925
WesBanco
WSBC
$4.07B
| $13.5M | 0.02% |
423,147
+67,666
| +19% | +$2.16M |
|
Similar funds
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.