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 | |
|---|---|---|---|---|---|---|
1251
Portillo's
PTLO
$365M
| $5.47M | 0.01% |
1,204,897
+688,800
| +133% | +$3.6M |
|
1252
Clear Channel Outdoor Holdings
CCO
$1.19B
| $5.44M | 0.01% |
2,460,389
-446,815
| -15% | -$829K |
|
1253
BioLife Solutions
BLFS
$1.71B
| $5.43M | 0.01% |
224,700
+32,500
| +17% | +$850K |
|
1254
QuinStreet
QNST
$1.2B
| $5.4M | 0.01% |
375,900
+159,200
| +73% | +$2.3M |
|
1255
Transcat
TRNS
$885M
| $5.4M | 0.01% |
95,200
+49,800
| +110% | +$3.1M |
|
|
SEMR
1256
DELISTED
Semrush
SEMR
| $5.39M | 0.01% |
453,000
+270,300
| +148% | +$2.53M |
|
1257
Axcelis
ACLS
$4.38B
| $5.37M | 0.01% |
+66,899
| New | +$5.6M |
|
1258
Vertex
VERX
$2.07B
| $5.37M | 0.01% |
+268,800
| New | +$5.81M |
|
1259
Chemed
CHE
$6.99B
| $5.37M | 0.01% |
12,540
-36,460
| -74% | -$15.9M |
|
1260
Ethan Allen Interiors
ETD
$576M
| $5.35M | 0.01% |
234,201
-11,899
| -5% | -$297K |
|
1261
Cognyte Software
CGNT
$678M
| $5.33M | 0.01% |
566,911
+60,000
| +12% | +$519K |
|
1262
CVB Financial
CVBF
$4.09B
| $5.33M | 0.01% |
286,492
+63,104
| +28% | +$1.21M |
|
1263
Bankwell Financial Group
BWFG
$545M
| $5.32M | 0.01% |
116,155
-2,193
| -2% | -$99K |
|
1264
Evolus
EOLS
$533M
| $5.32M | 0.01% |
799,900
+173,900
| +28% | +$1.18M |
|
1265
Heritage Insurance Holdings
HRTG
$990M
| $5.32M | 0.01% |
181,681
-90,649
| -33% | -$2.45M |
|
1266
Insperity
NSP
$2B
| $5.31M | 0.01% |
137,100
-124,300
| -48% | -$4.97M |
|
1267
Gaotu Techedu
GOTU
$405M
| $5.29M | 0.01% |
2,280,278
-131,422
| -5% | -$356K |
|
1268
Astec Industries
ASTE
$994M
| $5.29M | 0.01% |
122,045
+33,800
| +38% | +$1.54M |
|
1269
Euroseas
ESEA
$522M
| $5.28M | 0.01% |
96,678
-10,700
| -10% | -$615K |
|
1270
InfuSystem Holdings
INFU
$247M
| $5.27M | 0.01% |
587,509
+11,795
| +2% | +$113K |
|
|
BWAY
1271
Brainsway
BWAY
$648M
| $5.27M | 0.01% |
553,720
-72,600
| -12% | -$599K |
|
1272
SES AI
SES
$226M
| $5.26M | 0.01% |
2,924,642
+2,846,642
| +3,650% | +$6.38M |
|
|
BTC
1273
Grayscale Bitcoin Mini Trust ETF
BTC
$3.32B
| $5.25M | 0.01% |
135,560
+77,100
| +132% | +$3.42M |
|
1274
Tejon Ranch
TRC
$446M
| $5.25M | 0.01% |
332,826
-68,822
| -17% | -$1.1M |
|
1275
Tarsus Pharmaceuticals
TARS
$2.98B
| $5.25M | 0.01% |
64,100
+22,500
| +54% | +$1.68M |
|
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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.