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 | |
|---|---|---|---|---|---|---|
601
Viavi Solutions
VIAV
$10.6B
| $20.1M | 0.03% |
1,125,588
+123,300
| +12% | +$1.99M |
|
602
FIGS
FIGS
$2.47B
| $20.1M | 0.03% |
1,765,200
-102,800
| -6% | -$963K |
|
603
Hackett Group
HCKT
$277M
| $19.9M | 0.03% |
1,014,639
-297,507
| -23% | -$5.64M |
|
604
Mizuho Financial
MFG
$134B
| $19.7M | 0.03% |
2,697,303
-1,315,700
| -33% | -$8.99M |
|
605
Gartner
IT
$11.6B
| $19.7M | 0.03% |
78,209
+15,300
| +24% | +$3.68M |
|
606
EverQuote
EVER
$864M
| $19.7M | 0.03% |
730,107
+76,120
| +12% | +$1.84M |
|
607
Arhaus
ARHS
$1.37B
| $19.7M | 0.03% |
1,754,000
+169,200
| +11% | +$1.76M |
|
608
California Resources
CRC
$4.69B
| $19.7M | 0.03% |
439,575
+14,639
| +3% | +$695K |
|
609
CME Group
CME
$96.1B
| $19.6M | 0.03% |
71,869
-767,620
| -91% | -$209M |
|
|
ECHO
610
EchoStar
ECHO
$26.6B
| $19.6M | 0.03% |
180,087
-65,500
| -27% | -$5.33M |
|
611
PepsiCo
PEP
$192B
| $19.6M | 0.03% |
136,225
-104,345
| -43% | -$15.3M |
|
612
Blue Bird Corp
BLBD
$2.05B
| $19.5M | 0.03% |
415,440
+65,600
| +19% | +$3.43M |
|
613
Praxis Precision Medicines
PRAX
$10.3B
| $19.5M | 0.03% |
+66,230
| New | +$12.3M |
|
614
DaVita
DVA
$11.4B
| $19.5M | 0.03% |
+171,500
| New | +$20.9M |
|
615
Graphic Packaging
GPK
$3.51B
| $19.5M | 0.03% |
1,293,618
+385,100
| +42% | +$6.33M |
|
616
Banco Santander Chile
BSAC
$16.1B
| $19.5M | 0.03% |
626,218
+50,191
| +9% | +$1.46M |
|
617
Unitil
UTL
$992M
| $19.2M | 0.03% |
396,940
-87,100
| -18% | -$4.24M |
|
618
Castle Biosciences
CSTL
$933M
| $19.2M | 0.03% |
493,100
-69,500
| -12% | -$2.24M |
|
619
SunCoke Energy
SXC
$788M
| $19.2M | 0.03% |
2,663,161
+261,400
| +11% | +$1.92M |
|
620
Dana Inc
DAN
$3.26B
| $19.2M | 0.03% |
806,300
-131,700
| -14% | -$2.79M |
|
621
Carriage Services
CSV
$555M
| $19.1M | 0.03% |
452,102
-31,798
| -7% | -$1.38M |
|
622
Celanese
CE
$4.86B
| $19.1M | 0.03% |
+452,100
| New | +$18.4M |
|
623
Expedia Group
EXPE
$39.4B
| $19.1M | 0.03% |
67,300
+63,200
| +1,541% | +$15.6M |
|
624
Independent Bank Corp
IBCP
$854M
| $19.1M | 0.03% |
585,700
-14,600
| -2% | -$469K |
|
625
KLA
KLAC
$274B
| $19M | 0.03% |
156,690
-671,400
| -81% | -$78.7M |
|
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.