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 | |
|---|---|---|---|---|---|---|
|
UDMY
1726
DELISTED
Udemy
UDMY
| $2.51M | ﹤0.01% |
429,501
-345,399
| -45% | -$2.01M |
|
1727
Republic Bancorp
RBCAA
$1.91B
| $2.51M | ﹤0.01% |
36,400
-3,100
| -8% | -$215K |
|
|
HITI
1728
High Tide
HITI
$204M
| $2.5M | ﹤0.01% |
945,063
+245,863
| +35% | +$730K |
|
1729
Matthews International
MATW
$725M
| $2.49M | ﹤0.01% |
+95,486
| New | +$2.34M |
|
1730
Heron Therapeutics
HRTX
$63.5M
| $2.49M | ﹤0.01% |
1,915,900
-939,099
| -33% | -$1.16M |
|
1731
Willdan Group
WLDN
$1.29B
| $2.49M | ﹤0.01% |
24,000
-30,400
| -56% | -$2.99M |
|
1732
Vanguard Morningstar Mega Cap Value ETF
MGV
$13.7B
| $2.48M | ﹤0.01% |
17,600
-21,500
| -55% | -$2.99M |
|
1733
Bank of Marin Bancorp
BMRC
$462M
| $2.48M | ﹤0.01% |
95,292
-8,576
| -8% | -$221K |
|
1734
iMGP DBi Managed Futures Strategy ETF
DBMF
$4.2B
| $2.48M | ﹤0.01% |
88,300
+5,400
| +7% | +$154K |
|
1735
Rekor Systems
REKR
$97.6M
| $2.47M | ﹤0.01% |
+1,791,100
| New | +$3.66M |
|
1736
Parke Bancorp
PKBK
$409M
| $2.47M | ﹤0.01% |
98,547
-2,400
| -2% | -$54.1K |
|
1737
Vanguard Morningstar Mid-Cap Value ETF
VOE
$24.5B
| $2.47M | ﹤0.01% |
13,900
+9,200
| +196% | +$1.61M |
|
1738
Insteel Industries
IIIN
$635M
| $2.46M | ﹤0.01% |
77,740
+20,540
| +36% | +$670K |
|
1739
Atmus Filtration Technologies
ATMU
$4.06B
| $2.46M | ﹤0.01% |
47,400
-166,700
| -78% | -$8.07M |
|
1740
Ampco-Pittsburgh
AP
$190M
| $2.46M | ﹤0.01% |
461,302
-19,317
| -4% | -$53.4K |
|
1741
Seacoast Banking Corp of Florida
SBCF
$3.44B
| $2.45M | ﹤0.01% |
78,005
-98,600
| -56% | -$3.07M |
|
1742
First Trust NASDAQ Cybersecurity ETF
CIBR
$16B
| $2.45M | ﹤0.01% |
+34,300
| New | +$2.57M |
|
1743
ImmunityBio
IBRX
$8.11B
| $2.44M | ﹤0.01% |
1,231,770
+215,571
| +21% | +$488K |
|
1744
Everspin Technologies
MRAM
$410M
| $2.43M | ﹤0.01% |
261,367
+11,600
| +5% | +$110K |
|
1745
Peoples Bancorp
PEBO
$1.48B
| $2.42M | ﹤0.01% |
80,686
+12,663
| +19% | +$376K |
|
1746
Ovid Therapeutics
OVID
$523M
| $2.42M | ﹤0.01% |
1,484,478
-533,546
| -26% | -$822K |
|
1747
Marriott International
MAR
$91.9B
| $2.41M | ﹤0.01% |
+7,776
| New | +$2.22M |
|
1748
Alector
ALEC
$228M
| $2.41M | ﹤0.01% |
1,543,650
+594,500
| +63% | +$1.05M |
|
1749
Chemung Financial Corp
CHMG
$403M
| $2.4M | ﹤0.01% |
42,922
-2,500
| -6% | -$133K |
|
1750
BancFirst
BANF
$3.89B
| $2.39M | ﹤0.01% |
22,569
+18,890
| +513% | +$2.14M |
|
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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.