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 |
Costco
COST
|
+$616M |
| 2 |
Netflix
NFLX
|
+$481M |
| 3 |
Micron Technology
MU
|
+$416M |
| 4 |
Tesla
TSLA
|
+$416M |
| 5 |
Procter & Gamble
PG
|
+$322M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$885M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$660M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$463M |
| 4 |
Applovin
APP
|
+$430M |
| 5 |
Meta Platforms (Facebook)
META
|
+$354M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 20.84% |
| 2 | Healthcare | 15.77% |
| 3 | Consumer Discretionary | 13.88% |
| 4 | Industrials | 9.94% |
| 5 | Financials | 8.79% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
951
1st Source
SRCE
$2.13B
| $9.32M | 0.01% |
149,127
-26,517
| -15% | -$1.64M |
|
952
WillScot Mobile Mini Holdings
WSC
$4B
| $9.29M | 0.01% |
+493,194
| New | +$9.95M |
|
953
Reliance Steel & Aluminium
RS
$21.7B
| $9.28M | 0.01% |
32,132
-48,580
| -60% | -$13.6M |
|
954
On Holding
ONON
$10.6B
| $9.26M | 0.01% |
199,300
-833,615
| -81% | -$35.9M |
|
955
Frequency Electronics
FEIM
$858M
| $9.26M | 0.01% |
171,961
-44,100
| -20% | -$1.62M |
|
956
Leggett & Platt
LEG
$1.29B
| $9.22M | 0.01% |
838,300
+60,000
| +8% | +$590K |
|
957
Innospec
IOSP
$2.31B
| $9.21M | 0.01% |
120,300
-26,200
| -18% | -$1.98M |
|
958
Dyne Therapeutics
DYN
$4.85B
| $9.21M | 0.01% |
470,645
+125,145
| +36% | +$2.37M |
|
959
Simply Good Foods
SMPL
$968M
| $9.16M | 0.01% |
456,212
+50,412
| +12% | +$1.05M |
|
960
Silicon Laboratories
SLAB
$7.3B
| $9.15M | 0.01% |
69,998
+17,100
| +32% | +$2.25M |
|
961
Saic
SAIC
$5.35B
| $9.13M | 0.01% |
90,750
+21,000
| +30% | +$2.01M |
|
962
Sensient Technologies
SXT
$5.53B
| $9.13M | 0.01% |
97,200
-77,200
| -44% | -$7.28M |
|
963
Genco Shipping & Trading
GNK
$1.1B
| $9.1M | 0.01% |
493,618
-258,956
| -34% | -$4.55M |
|
964
Lifeway Foods
LWAY
$447M
| $9.1M | 0.01% |
375,371
-42,400
| -10% | -$1.04M |
|
|
TEN
965
Tsakos Energy Navigation Ltd
TEN
$1.18B
| $9.08M | 0.01% |
404,797
+8,217
| +2% | +$192K |
|
|
EB
966
DELISTED
Eventbrite
EB
| $9.07M | 0.01% |
2,037,996
-38,100
| -2% | -$118K |
|
967
Dole
DOLE
$1.23B
| $9.06M | 0.01% |
604,100
-290,000
| -32% | -$4.04M |
|
968
Leonardo DRS
DRS
$11.9B
| $9.05M | 0.01% |
265,394
-116,600
| -31% | -$4.3M |
|
969
FTI Consulting
FCN
$4.24B
| $9.02M | 0.01% |
52,800
-143,900
| -73% | -$23.7M |
|
970
Ardagh Metal Packaging
AMBP
$3.02B
| $9M | 0.01% |
2,194,732
+238,400
| +12% | +$904K |
|
971
Hormel Foods
HRL
$13.4B
| $8.98M | 0.01% |
379,076
-899,849
| -70% | -$21M |
|
972
Healthpeak Properties
DOC
$14.2B
| $8.97M | 0.01% |
557,838
+51,870
| +10% | +$914K |
|
973
Information Services Group
III
$249M
| $8.96M | 0.01% |
1,549,609
+2,985
| +0.2% | +$16.8K |
|
|
TPH
974
DELISTED
Tri Pointe Homes
TPH
| $8.95M | 0.01% |
+284,436
| New | +$9.24M |
|
975
FuelCell Energy
FCEL
$1.63B
| $8.92M | 0.01% |
1,219,600
+150,600
| +14% | +$1.23M |
|
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Jim Simons's Q4 2025 Portfolio in Review
As of Q4 2025, Jim Simons held 3,923 positions worth $64.5B, down 15% from $75.8B the previous quarter. Its ten largest holdings account for 12% of the portfolio.
Jim Simons withdrew a net $10.1B in Q4 2025, closing 737 positions and reducing 1,682 holdings. Its most notable exit was Meta Platforms (Facebook), an estimated $354M position sold in full.
By sector, the portfolio is most concentrated in Technology at 21% of assets, down from 22% a quarter earlier, followed by Healthcare and Consumer Discretionary.
Against the trend, Jim Simons opened a new position in ServiceNow worth $204M.
- Jim Simons's largest Q4 2025 buy was ServiceNow: 1,331,977 shares worth $204M.
- Jim Simons added most to Costco in Q4 2025, an estimated $616M increase.
- Jim Simons's biggest Q4 2025 reduction was NVIDIA, cutting an estimated $885M.
- Jim Simons fully exited Meta Platforms (Facebook) in Q4 2025, selling an estimated $354M.
- Jim Simons's ten largest holdings make up 12% of its $64.5B portfolio in Q4 2025.
- Jim Simons opened 466 new positions and closed 737 in Q4 2025.
- Jim Simons's portfolio value fell 15% quarter-over-quarter to $64.5B.
Based on Renaissance Technologies's 13F filing for Q4 2025, filed 12 Feb 2026.