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 | |
|---|---|---|---|---|---|---|
1101
Marcus & Millichap
MMI
$1.18B
| $7.1M | 0.01% |
260,200
+230,400
| +773% | +$6.66M |
|
1102
ESCO Technologies
ESE
$7.78B
| $7.07M | 0.01% |
36,200
+25,100
| +226% | +$5.29M |
|
1103
Cavco Industries
CVCO
$4.6B
| $7.07M | 0.01% |
11,969
+7,869
| +192% | +$4.46M |
|
|
BRSL
1104
Brightstar Lottery PLC
BRSL
$2.15B
| $7.04M | 0.01% |
+454,900
| New | +$7.41M |
|
|
HOUS
1105
DELISTED
Anywhere Real Estate
HOUS
| $7.02M | 0.01% |
496,045
-26,475
| -5% | -$324K |
|
1106
Akamai
AKAM
$18B
| $7.02M | 0.01% |
80,500
-119,400
| -60% | -$9.82M |
|
1107
Regeneron Pharmaceuticals
REGN
$82.2B
| $7.01M | 0.01% |
9,082
-266,080
| -97% | -$181M |
|
1108
Turkcell
TKC
$4.74B
| $7M | 0.01% |
1,280,600
+827,415
| +183% | +$4.83M |
|
1109
Capital City Bank Group
CCBG
$896M
| $7M | 0.01% |
164,471
-2,200
| -1% | -$91.7K |
|
|
CNTA
1110
DELISTED
Centessa Pharmaceuticals
CNTA
| $6.99M | 0.01% |
279,300
+114,700
| +70% | +$2.91M |
|
1111
First Business Financial Services
FBIZ
$593M
| $6.96M | 0.01% |
128,265
-13,300
| -9% | -$696K |
|
1112
Vanguard Short-Term Corporate Bond ETF
VCSH
$45.1B
| $6.95M | 0.01% |
87,145
-811,255
| -90% | -$64.7M |
|
|
CLDT
1113
Chatham Lodging
CLDT
$590M
| $6.94M | 0.01% |
1,018,475
-117,700
| -10% | -$781K |
|
1114
Curtiss-Wright
CW
$25.4B
| $6.93M | 0.01% |
12,580
-34,820
| -73% | -$19.4M |
|
1115
Diebold Nixdorf
DBD
$2.45B
| $6.9M | 0.01% |
101,700
-118,480
| -54% | -$7.4M |
|
|
BFIN
1116
DELISTED
BankFinancial
BFIN
| $6.9M | 0.01% |
575,287
-50,900
| -8% | -$602K |
|
1117
M/I Homes
MHO
$3.82B
| $6.9M | 0.01% |
53,900
+33,800
| +168% | +$4.47M |
|
1118
State Street Technology Select Sector SPDR ETF
XLK
$125B
| $6.89M | 0.01% |
47,840
+31,640
| +195% | +$4.57M |
|
1119
VanEck IG Floating Rate ETF
FLTR
$3.04B
| $6.89M | 0.01% |
270,217
-703,464
| -72% | -$17.9M |
|
1120
Sana Biotechnology
SANA
$1.1B
| $6.88M | 0.01% |
1,691,116
-301,384
| -15% | -$1.35M |
|
1121
Afya
AFYA
$1.26B
| $6.87M | 0.01% |
446,100
-48,970
| -10% | -$722K |
|
1122
BGC Group
BGC
$5.12B
| $6.87M | 0.01% |
769,648
-528,700
| -41% | -$4.76M |
|
|
DRD
1123
DRDGold
DRD
$2.06B
| $6.85M | 0.01% |
220,813
-158,100
| -42% | -$4.52M |
|
1124
Kingstone Companies
KINS
$284M
| $6.83M | 0.01% |
405,889
-75,000
| -16% | -$1.14M |
|
|
PSTL
1125
Postal Realty Trust
PSTL
$701M
| $6.83M | 0.01% |
423,030
+98,980
| +31% | +$1.52M |
|
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.