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 | |
|---|---|---|---|---|---|---|
2201
TScan Therapeutics
TCRX
$52.3M
| $1.14M | ﹤0.01% |
1,141,069
+311,150
| +37% | +$450K |
|
|
ACH
2202
Accendra Health
ACH
$84.6M
| $1.14M | ﹤0.01% |
407,413
-283,387
| -41% | -$1.01M |
|
2203
Epsilon Energy
EPSN
$161M
| $1.14M | ﹤0.01% |
245,400
-63,900
| -21% | -$308K |
|
2204
Equillium
EQ
$127M
| $1.14M | ﹤0.01% |
733,226
+118,303
| +19% | +$144K |
|
|
MTA
2205
Metalla Royalty & Streaming
MTA
$848M
| $1.13M | ﹤0.01% |
145,700
+41,939
| +40% | +$302K |
|
|
AIRJ
2206
Montana Technologies Corp
AIRJ
$458M
| $1.13M | ﹤0.01% |
287,500
+231,900
| +417% | +$1M |
|
2207
Larimar Therapeutics
LRMR
$444M
| $1.13M | ﹤0.01% |
297,266
-561,376
| -65% | -$2.18M |
|
|
SCHR
2208
Schwab Intermediately-Term US Treasury ETF
SCHR
$13.3B
| $1.13M | ﹤0.01% |
45,000
-108,900
| -71% | -$2.74M |
|
|
TWFG
2209
TWFG Inc
TWFG
$1.46B
| $1.13M | ﹤0.01% |
39,200
+2,900
| +8% | +$78.8K |
|
2210
EyePoint Inc
EYPT
$1.16B
| $1.13M | ﹤0.01% |
+61,600
| New | +$873K |
|
|
ORBS
2211
Eightco Holdings
ORBS
$292M
| $1.12M | ﹤0.01% |
+649,100
| New | +$3.05M |
|
|
MAZE
2212
Maze Therapeutics
MAZE
$1.54B
| $1.12M | ﹤0.01% |
27,100
-59,000
| -69% | -$2.03M |
|
2213
Arthur J. Gallagher & Co
AJG
$65B
| $1.12M | ﹤0.01% |
4,320
-396,180
| -99% | -$105M |
|
2214
Vicor
VICR
$10.4B
| $1.12M | ﹤0.01% |
+10,200
| New | +$867K |
|
2215
Schwab International Equity ETF
SCHF
$69.3B
| $1.12M | ﹤0.01% |
+46,500
| New | +$1.11M |
|
2216
Greene County Bancorp
GCBC
$595M
| $1.1M | ﹤0.01% |
49,700
-1,200
| -2% | -$27.2K |
|
2217
Washington Trust Bancorp
WASH
$767M
| $1.1M | ﹤0.01% |
37,368
-28,300
| -43% | -$805K |
|
2218
Invesco FTSE RAFI US 1000 ETF
PRF
$10.1B
| $1.1M | ﹤0.01% |
23,500
-11,000
| -32% | -$507K |
|
|
SELF
2219
Global Self Storage
SELF
$58.9M
| $1.1M | ﹤0.01% |
214,825
-11,049
| -5% | -$55.5K |
|
2220
Fidelity Enhanced Large Cap Core ETF
FELC
$8.41B
| $1.1M | ﹤0.01% |
28,700
-42,000
| -59% | -$1.58M |
|
2221
iShares MSCI KLD 400 Social ETF
DSI
$5.58B
| $1.1M | ﹤0.01% |
8,500
-1,600
| -16% | -$204K |
|
2222
First Western Financial
MYFW
$309M
| $1.09M | ﹤0.01% |
40,800
-21,500
| -35% | -$513K |
|
2223
Karat Packaging
KRT
$953M
| $1.09M | ﹤0.01% |
48,315
-4,900
| -9% | -$113K |
|
2224
iShares Global Energy ETF
IXC
$2.74B
| $1.09M | ﹤0.01% |
25,900
-11,300
| -30% | -$475K |
|
2225
Invesco Preferred ETF
PGX
$3.77B
| $1.09M | ﹤0.01% |
+96,600
| New | +$1.1M |
|
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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.