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 | |
|---|---|---|---|---|---|---|
1301
Electromed
ELMD
$347M
| $5.04M | 0.01% |
173,004
-43,900
| -20% | -$1.15M |
|
1302
Liberty Latin America Class A
LILA
$1.67B
| $5.02M | 0.01% |
999,869
+212,643
| +27% | +$1.17M |
|
1303
State Street SPDR S&P Biotech ETF
XBI
$10.2B
| $5.01M | 0.01% |
+41,100
| New | +$4.71M |
|
1304
First Horizon
FHN
$12.4B
| $5M | 0.01% |
209,411
-635,000
| -75% | -$14.2M |
|
1305
Disc Medicine
IRON
$3.03B
| $4.99M | 0.01% |
62,820
+56,020
| +824% | +$4.73M |
|
1306
NB Bancorp
NBBK
$1.01B
| $4.98M | 0.01% |
251,274
+140,374
| +127% | +$2.67M |
|
|
ALEX
1307
DELISTED
Alexander & Baldwin
ALEX
| $4.97M | 0.01% |
240,731
-185,400
| -44% | -$3.22M |
|
1308
Anika Therapeutics
ANIK
$287M
| $4.96M | 0.01% |
515,717
-17,300
| -3% | -$166K |
|
1309
Select Water Solutions
WTTR
$2.71B
| $4.95M | 0.01% |
470,061
-212,015
| -31% | -$2.28M |
|
1310
Sociedad Química y Minera de Chile
SQM
$21.2B
| $4.92M | 0.01% |
+71,584
| New | +$3.94M |
|
1311
Direxion Daily S&P 500 Bull 3x ETF
SPXL
$7.38B
| $4.92M | 0.01% |
+22,300
| New | +$4.85M |
|
|
BRT
1312
BRT Apartments
BRT
$270M
| $4.91M | 0.01% |
334,091
-19,500
| -6% | -$288K |
|
1313
ACM Research
ACMR
$5.62B
| $4.91M | 0.01% |
124,439
-175,486
| -59% | -$6.54M |
|
|
HUYA
1314
Huya Inc
HUYA
$526M
| $4.91M | 0.01% |
1,704,100
-69,900
| -4% | -$205K |
|
1315
East-West Bancorp
EWBC
$18.8B
| $4.9M | 0.01% |
43,633
+11,900
| +38% | +$1.26M |
|
1316
Bassett Furniture
BSET
$170M
| $4.9M | 0.01% |
292,461
-26,900
| -8% | -$421K |
|
1317
Acco Brands
ACCO
$404M
| $4.9M | 0.01% |
1,313,447
+321,400
| +32% | +$1.19M |
|
|
CMRC
1318
Commerce.com Inc Series 1
CMRC
$184M
| $4.9M | 0.01% |
1,188,700
-40,200
| -3% | -$185K |
|
1319
iShares Core S&P US Value ETF
IUSV
$28B
| $4.89M | 0.01% |
47,700
+9,400
| +25% | +$953K |
|
1320
Immunocore
IMCR
$1.7B
| $4.89M | 0.01% |
140,900
-1,870
| -1% | -$66K |
|
1321
Sonic Automotive
SAH
$2.54B
| $4.89M | 0.01% |
79,026
-15,274
| -16% | -$1.01M |
|
1322
US Physical Therapy
USPH
$1.18B
| $4.87M | 0.01% |
62,374
-42,471
| -41% | -$3.45M |
|
1323
Espey Mfg & Electronics Corp
ESP
$200M
| $4.87M | 0.01% |
103,312
+3,247
| +3% | +$130K |
|
1324
Xeris Biopharma Holdings
XERS
$1.54B
| $4.86M | 0.01% |
619,660
-1,003,180
| -62% | -$7.9M |
|
|
VTYX
1325
DELISTED
Ventyx Biosciences
VTYX
| $4.86M | 0.01% |
538,071
+303,071
| +129% | +$2.26M |
|
Similar funds
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.