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 | |
|---|---|---|---|---|---|---|
1026
Fidelity National Financial
FNF
$12.8B
| $8.12M | 0.01% |
+148,809
| New | +$8.47M |
|
1027
Skyward Specialty Insurance
SKWD
$2.44B
| $8.12M | 0.01% |
158,900
+36,700
| +30% | +$1.76M |
|
|
ESPR
1028
DELISTED
Esperion Therapeutics
ESPR
| $8.12M | 0.01% |
2,194,600
+1,420,700
| +184% | +$4.59M |
|
1029
Landstar System
LSTR
$6.4B
| $8.1M | 0.01% |
56,340
-35,100
| -38% | -$4.68M |
|
|
OPLN
1030
Openlane
OPLN
$4.34B
| $8.09M | 0.01% |
271,600
-35,400
| -12% | -$957K |
|
1031
Owens Corning
OC
$12.3B
| $8.07M | 0.01% |
72,100
-103,100
| -59% | -$12.1M |
|
|
SII
1032
Sprott
SII
$3.03B
| $8.04M | 0.01% |
82,100
-75,688
| -48% | -$6.71M |
|
1033
Park Hotels & Resorts
PK
$2.99B
| $8.02M | 0.01% |
766,852
+332,100
| +76% | +$3.56M |
|
1034
UGI
UGI
$7.53B
| $8.02M | 0.01% |
214,220
-172,363
| -45% | -$6.1M |
|
1035
Structure Therapeutics
GPCR
$3.83B
| $8.01M | 0.01% |
115,200
-38,700
| -25% | -$1.58M |
|
1036
Unifirst Corp
UNF
$5.24B
| $8.01M | 0.01% |
41,500
-2,000
| -5% | -$338K |
|
1037
Vanguard Real Estate ETF
VNQ
$39.1B
| $7.98M | 0.01% |
90,200
+45,200
| +100% | +$4.06M |
|
1038
Arcutis Biotherapeutics
ARQT
$3.3B
| $7.96M | 0.01% |
+273,999
| New | +$7.01M |
|
1039
CMS Energy
CMS
$22B
| $7.94M | 0.01% |
113,500
-365,300
| -76% | -$26.6M |
|
1040
Gentherm
THRM
$1.27B
| $7.93M | 0.01% |
218,064
-500
| -0.2% | -$18K |
|
1041
Arrow Financial
AROW
$723M
| $7.92M | 0.01% |
252,205
+2,917
| +1% | +$86.3K |
|
1042
TAT Technologies
TATT
$508M
| $7.9M | 0.01% |
177,002
-21,800
| -11% | -$892K |
|
|
CGAU
1043
Centerra Gold
CGAU
$4.15B
| $7.88M | 0.01% |
548,700
-238,300
| -30% | -$2.98M |
|
1044
NACCO Industries
NC
$317M
| $7.88M | 0.01% |
160,718
-8,800
| -5% | -$405K |
|
1045
Orrstown Financial Services
ORRF
$850M
| $7.87M | 0.01% |
222,146
-20,300
| -8% | -$709K |
|
1046
Talkspace
TALK
$869M
| $7.87M | 0.01% |
2,167,400
-459,500
| -17% | -$1.46M |
|
1047
ATN International
ATNI
$478M
| $7.84M | 0.01% |
344,059
-1,973
| -0.6% | -$36.5K |
|
1048
Timberland Bancorp
TSBK
$361M
| $7.81M | 0.01% |
218,089
-4,900
| -2% | -$166K |
|
|
MASI
1049
DELISTED
Masimo
MASI
| $7.79M | 0.01% |
+59,900
| New | +$8.58M |
|
1050
Real Brokerage
REAX
$523M
| $7.77M | 0.01% |
2,128,900
+143,100
| +7% | +$553K |
|
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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.