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 | |
|---|---|---|---|---|---|---|
1426
Invesco KBW Bank ETF
KBWB
$6.86B
| $4.03M | 0.01% |
47,800
-19,500
| -29% | -$1.54M |
|
1427
Annexon
ANNX
$865M
| $4.03M | 0.01% |
802,600
+49,021
| +7% | +$187K |
|
1428
American Superconductor
AMSC
$1.55B
| $4.03M | 0.01% |
139,989
-184,000
| -57% | -$7.96M |
|
1429
Sanmina
SANM
$11.2B
| $4.03M | 0.01% |
+26,833
| New | +$3.96M |
|
|
WBI
1430
WaterBridge Infrastructure LLC
WBI
$1.49B
| $4.03M | 0.01% |
+201,200
| New | +$4.67M |
|
1431
Wave Life Sciences
WVE
$1.05B
| $4.02M | 0.01% |
+236,420
| New | +$2.4M |
|
1432
ICF International
ICFI
$1.59B
| $4.02M | 0.01% |
47,100
-60,400
| -56% | -$5.13M |
|
1433
Lineage Cell Therapeutics
LCTX
$268M
| $4.02M | 0.01% |
2,404,800
+499,167
| +26% | +$864K |
|
1434
Nelnet
NNI
$4.55B
| $4.02M | 0.01% |
30,200
+17,300
| +134% | +$2.26M |
|
|
BCYC
1435
Bicycle Therapeutics
BCYC
$274M
| $4.01M | 0.01% |
566,600
+47,900
| +9% | +$353K |
|
1436
Public Service Enterprise Group
PEG
$38B
| $4.01M | 0.01% |
49,900
-227,100
| -82% | -$18.5M |
|
1437
iShares MSCI EAFE Small-Cap ETF
SCZ
$13.6B
| $4M | 0.01% |
+51,600
| New | +$3.96M |
|
1438
Invesco Mortgage Capital
IVR
$805M
| $4M | 0.01% |
475,600
-205,652
| -30% | -$1.61M |
|
1439
Prime Medicine
PRME
$559M
| $3.99M | 0.01% |
1,149,159
+14,489
| +1% | +$64.4K |
|
1440
Cars.com
CARS
$650M
| $3.98M | 0.01% |
326,198
-246,902
| -43% | -$2.87M |
|
1441
Impinj
PI
$5.26B
| $3.97M | 0.01% |
+22,800
| New | +$4.06M |
|
|
GLXY
1442
Galaxy Digital Inc
GLXY
$4.23B
| $3.95M | 0.01% |
+176,721
| New | +$5.47M |
|
1443
Primis Financial Corp
FRST
$412M
| $3.94M | 0.01% |
283,470
-12,800
| -4% | -$145K |
|
1444
Replimune Group
REPL
$1.42B
| $3.94M | 0.01% |
+405,053
| New | +$3.44M |
|
1445
VanEck Bitcoin Trust
HODL
$1.05B
| $3.93M | 0.01% |
159,100
+69,000
| +77% | +$1.95M |
|
1446
BlackRock US Equity Factor Rotation ETF
DYNF
$40.3B
| $3.93M | 0.01% |
64,600
+18,000
| +39% | +$1.08M |
|
1447
PetMed Express
PETS
$39.5M
| $3.93M | 0.01% |
1,226,569
-42,400
| -3% | -$106K |
|
|
JHG
1448
DELISTED
Janus Henderson
JHG
| $3.92M | 0.01% |
+82,500
| New | +$3.65M |
|
1449
Bright Horizons
BFAM
$3.76B
| $3.92M | 0.01% |
38,700
-89,900
| -70% | -$9.07M |
|
1450
Diana Shipping
DSX
$309M
| $3.92M | 0.01% |
2,361,713
+246,300
| +12% | +$429K |
|
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.