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 | |
|---|---|---|---|---|---|---|
101
United Parcel Service
UPS
$88.8B
| $139M | 0.22% |
1,403,300
+863,574
| +160% | +$80.8M |
|
102
Roku
ROKU
$22.4B
| $138M | 0.21% |
1,274,900
+52,200
| +4% | +$5.3M |
|
|
NGD
103
DELISTED
New Gold Inc
NGD
| $138M | 0.21% |
15,873,764
-4,876,700
| -24% | -$36.7M |
|
104
Strategy Inc
MSTR
$37.8B
| $137M | 0.21% |
957,332
+731,602
| +324% | +$168M |
|
105
Boeing
BA
$184B
| $133M | 0.21% |
610,884
-84,716
| -12% | -$17.4M |
|
106
Rollins
ROL
$17.8B
| $132M | 0.21% |
2,206,887
-539,954
| -20% | -$31.7M |
|
107
Southern Company
SO
$106B
| $132M | 0.2% |
+1,513,400
| New | +$138M |
|
108
Trade Desk
TTD
$6.37B
| $130M | 0.2% |
3,422,016
+2,294,416
| +203% | +$102M |
|
109
Clear Secure
YOU
$4.97B
| $128M | 0.2% |
3,642,417
-170,642
| -4% | -$5.81M |
|
110
Wynn Resorts
WYNN
$10.8B
| $127M | 0.2% |
1,055,956
-366,700
| -26% | -$45.4M |
|
111
Bristol-Myers Squibb
BMY
$130B
| $127M | 0.2% |
2,353,689
-1,314,000
| -36% | -$63.2M |
|
112
Berkshire Hathaway Class B
BRK.B
$1.11T
| $127M | 0.2% |
252,188
+249,133
| +8,155% | +$124M |
|
113
Li Auto
LI
$12.4B
| $126M | 0.2% |
7,441,839
-689,800
| -8% | -$13.7M |
|
114
Honeywell
HON
$72.9B
| $125M | 0.19% |
640,600
-234,937
| -27% | -$46M |
|
115
Futu Holdings
FUTU
$14.7B
| $124M | 0.19% |
757,226
+42,200
| +6% | +$7.24M |
|
116
Ubiquiti
UI
$34.7B
| $123M | 0.19% |
222,864
-19,400
| -8% | -$12.3M |
|
117
Paychex
PAYX
$43.1B
| $123M | 0.19% |
1,094,201
+790,000
| +260% | +$92.5M |
|
118
Toast
TOST
$20.2B
| $123M | 0.19% |
3,453,928
+993,116
| +40% | +$35.8M |
|
119
Alpha Metallurgical Resources
AMR
$1.95B
| $122M | 0.19% |
611,915
-73,900
| -11% | -$12.8M |
|
120
Altria Group
MO
$109B
| $122M | 0.19% |
2,120,000
+276,766
| +15% | +$16.7M |
|
121
Trane Technologies
TT
$106B
| $120M | 0.19% |
307,828
+161,660
| +111% | +$66.9M |
|
122
Dr. Reddy's Laboratories
RDY
$10.4B
| $116M | 0.18% |
8,255,128
-527,500
| -6% | -$7.4M |
|
123
Abercrombie & Fitch
ANF
$5.24B
| $115M | 0.18% |
911,810
-224,500
| -20% | -$19.6M |
|
124
CorVel
CRVL
$3.09B
| $114M | 0.18% |
1,686,330
-88,400
| -5% | -$6.4M |
|
125
Tenaris
TS
$27B
| $114M | 0.18% |
2,964,344
-386,300
| -12% | -$14.9M |
|
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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.