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 | |
|---|---|---|---|---|---|---|
1501
AnaptysBio
ANAB
$1.7B
| $3.7M | 0.01% |
76,300
-47,000
| -38% | -$1.83M |
|
1502
Procept Biorobotics
PRCT
$1.25B
| $3.7M | 0.01% |
+117,466
| New | +$3.9M |
|
1503
NOV
NOV
$7.56B
| $3.69M | 0.01% |
236,110
-136,400
| -37% | -$2.02M |
|
1504
Winnebago Industries
WGO
$890M
| $3.69M | 0.01% |
91,075
-138,125
| -60% | -$5.04M |
|
1505
Edgewell Personal Care
EPC
$1.31B
| $3.67M | 0.01% |
+215,200
| New | +$3.98M |
|
1506
HEICO Corp Class A
HEI.A
$38.1B
| $3.67M | 0.01% |
+14,527
| New | +$3.59M |
|
1507
Central Garden & Pet Co
CENT
$2.73B
| $3.66M | 0.01% |
113,987
+14,900
| +15% | +$476K |
|
|
GRDN
1508
Guardian Pharmacy Services
GRDN
$2.43B
| $3.66M | 0.01% |
121,600
-25,000
| -17% | -$707K |
|
1509
Delcath Systems
DCTH
$586M
| $3.65M | 0.01% |
361,599
+105,399
| +41% | +$1.05M |
|
1510
Unisys
UIS
$208M
| $3.65M | 0.01% |
1,323,233
-42,347
| -3% | -$132K |
|
1511
Direxion Daily S&P Biotech Bull 3X ETF
LABU
$616M
| $3.65M | 0.01% |
22,900
+2,200
| +11% | +$302K |
|
1512
Biglari Holdings Class B
BH
$1.21B
| $3.65M | 0.01% |
10,970
-4,406
| -29% | -$1.48M |
|
1513
Forrester Research
FORR
$221M
| $3.64M | 0.01% |
448,006
-16,600
| -4% | -$130K |
|
1514
Danaos Corp
DAC
$2.57B
| $3.64M | 0.01% |
38,600
+21,300
| +123% | +$1.96M |
|
1515
Clearway Energy Class C
CWEN
$7.04B
| $3.63M | 0.01% |
109,200
-57,878
| -35% | -$1.93M |
|
1516
Pultegroup
PHM
$24.8B
| $3.63M | 0.01% |
+30,967
| New | +$3.8M |
|
1517
MGE Energy Inc
MGEE
$3.09B
| $3.63M | 0.01% |
46,300
+2,900
| +7% | +$238K |
|
1518
Grupo Cibest SA
CIB
$22.6B
| $3.63M | 0.01% |
57,000
-164,700
| -74% | -$9.86M |
|
1519
Rush Enterprises Class A
RUSHA
$9.59B
| $3.62M | 0.01% |
67,200
+16,400
| +32% | +$852K |
|
|
GDEN
1520
DELISTED
Golden Entertainment
GDEN
| $3.62M | 0.01% |
133,118
+77,668
| +140% | +$2.01M |
|
1521
International General Insurance
IGIC
$1.16B
| $3.61M | 0.01% |
143,700
-8,800
| -6% | -$207K |
|
|
RAPP
1522
Rapport Therapeutics
RAPP
$2.25B
| $3.6M | 0.01% |
118,814
+83,514
| +237% | +$2.31M |
|
1523
Ponce Financial Group
PDLB
$505M
| $3.6M | 0.01% |
220,247
+39,412
| +22% | +$607K |
|
1524
Stratasys
SSYS
$773M
| $3.59M | 0.01% |
414,032
-86,000
| -17% | -$852K |
|
1525
Urban Edge Properties
UE
$2.77B
| $3.59M | 0.01% |
187,273
+174,973
| +1,423% | +$3.4M |
|
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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.