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Jim Simons Renaissance Technologies
AUM
$72.6B
Turnover
31.08%
1-Year Est. Return
54.88%
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.
This Fund
S&P 500
This Quarter Est. Return
+24.48%
1 Year Est. Return
+54.88%
3 Year Est. Return
+169.34%
5 Year Est. Return
+186.18%
10 Year Est. Return
+887.92%
AUM
$72.6B
AUM Growth
+$8.69B
(+14%)
Cap. Flow
+$958M
Cap. Flow % of AUM
Cap. Flow %
1.32%
Top 10 Holdings %
Top 10 Hldgs %
12.01%
Holding
3,761
New
548
Increased
1,084
Reduced
1,502
Closed
621
Avg Time Held
3.5
years
Top 10 Avg Time Held
1.5
years
Top 20 Avg Time Held
1.3
years
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Meta Platforms (Facebook)
META
|
+$1.08B |
| 2 |
NVIDIA
NVDA
|
+$938M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$639M |
| 4 |
Netflix
NFLX
|
+$598M |
| 5 |
Amazon
AMZN
|
+$575M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Micron Technology
MU
|
+$1.46B |
| 2 |
Sandisk
SNDK
|
+$1.13B |
| 3 |
Apple
AAPL
|
+$426M |
| 4 |
Linde
LIN
|
+$316M |
| 5 |
Vertiv
VRT
|
+$297M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 23.58% |
| 2 | Healthcare | 14.83% |
| 3 | Consumer Discretionary | 11.24% |
| 4 | Industrials | 10.49% |
| 5 | Communication Services | 8.91% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | Held Since | |
|---|---|---|---|---|---|---|---|
1976
Edwards Lifesciences
EW
$51.9B
| $1.9M | ﹤0.01% |
21,000
-8,000
| -28% | -$670K |
2026 Q1
1 quarter
|
|
1977
Zura Bio
ZURA
$338M
| $1.9M | ﹤0.01% |
321,702
+8,402
| +3% | +$40K |
2023 Q4
10 quarters
|
|
1978
Moog Inc Class B
MOG.B
$10.6B
| $1.9M | ﹤0.01% |
4,440
-160
| -3% | -$56.3K |
2016 Q2
40 quarters
|
|
1979
Whitehawk Therapeutics
WHWK
$185M
| $1.9M | ﹤0.01% |
413,822
-14,800
| -3% | -$61.6K |
2019 Q2
28 quarters
|
|
1980
Harrow
HROW
$1.06B
| $1.89M | ﹤0.01% |
44,617
-39,962
| -47% | -$1.49M |
2018 Q3
31 quarters
|
|
1981
Williams Companies
WMB
$86.4B
| $1.89M | ﹤0.01% |
+25,485
| New | +$1.88M |
2026 Q2
0 quarters
|
|
1982
Valhi
VHI
$406M
| $1.89M | ﹤0.01% |
129,117
+700
| +0.5% | +$9.9K |
2014 Q2
48 quarters
|
|
1983
Eton Pharmaceutcials
ETON
$1.43B
| $1.89M | ﹤0.01% |
52,300
-111,021
| -68% | -$3.26M |
2023 Q1
13 quarters
|
|
1984
Kodak
KODK
$902M
| $1.89M | ﹤0.01% |
204,645
+177,055
| +642% | +$1.94M |
2025 Q4
2 quarters
|
|
1985
Defiance Daily Target 2X Long IONQ ETF
IONX
$87.6M
| $1.89M | ﹤0.01% |
37,100
+7,100
| +24% | +$393K |
2026 Q1
1 quarter
|
|
1986
Alto Neuroscience
ANRO
$871M
| $1.88M | ﹤0.01% |
71,399
-32,100
| -31% | -$742K |
2025 Q2
4 quarters
|
|
1987
USCB Financial Holdings
USCB
$420M
| $1.88M | ﹤0.01% |
92,000
+800
| +0.9% | +$15.2K |
2021 Q4
18 quarters
|
|
1988
Alector
ALEC
$204M
| $1.88M | ﹤0.01% |
935,166
-352,525
| -27% | -$755K |
2021 Q4
18 quarters
|
|
1989
Aldeyra Therapeutics
ALDX
$38.9M
| $1.88M | ﹤0.01% |
882,000
+18,813
| +2% | +$32.3K |
2022 Q2
16 quarters
|
|
1990
Security National Financial
SNFCA
$236M
| $1.88M | ﹤0.01% |
203,427
-9,975
| -5% | -$91.3K |
2014 Q4
46 quarters
|
|
1991
Guardian Pharmacy Services
GRDN
$2.51B
| $1.88M | ﹤0.01% |
44,798
-55,191
| -55% | -$2.14M |
2024 Q4
6 quarters
|
|
1992
State Street SPDR Dow Jones REIT ETF
RWR
$1.81B
| $1.88M | ﹤0.01% |
+16,602
| New | +$1.82M |
2026 Q2
0 quarters
|
|
1993
Nouveau Monde Graphite
NMG
$293M
| $1.86M | ﹤0.01% |
1,242,879
-190,144
| -13% | -$359K |
2025 Q3
3 quarters
|
|
1994
Annovis Bio
ANVS
$42.3M
| $1.86M | ﹤0.01% |
1,002,200
+654,600
| +188% | +$1.27M |
2026 Q1
1 quarter
|
|
1995
Putnam Focused Large Cap Value ETF
PVAL
$14.9B
| $1.86M | ﹤0.01% |
36,500
+7,400
| +25% | +$368K |
2026 Q1
1 quarter
|
|
1996
Vanguard Industrials ETF
VIS
$7.97B
| $1.86M | ﹤0.01% |
5,160
-1,560
| -23% | -$529K |
2025 Q2
4 quarters
|
|
1997
State Street Industrial Select Sector SPDR ETF
XLI
$30.2B
| $1.85M | ﹤0.01% |
10,000
-664,600
| -99% | -$115M |
2025 Q4
2 quarters
|
|
1998
Kinsale Capital Group
KNSL
$8.9B
| $1.85M | ﹤0.01% |
+5,600
| New | +$1.8M |
2026 Q2
0 quarters
|
|
1999
Stoneridge
SRI
$169M
| $1.85M | ﹤0.01% |
252,200
-32,700
| -11% | -$224K |
2024 Q3
7 quarters
|
|
2000
Foghorn Therapeutics
FHTX
$119M
| $1.84M | ﹤0.01% |
377,936
-28,489
| -7% | -$126K |
2024 Q2
8 quarters
|
|
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Jim Simons's Q2 2026 Portfolio in Review
As of Q2 2026, Jim Simons held 3,761 positions worth $72.6B, up 14% from $63.9B the previous quarter. Its ten largest holdings account for 12% of the portfolio.
Jim Simons's Q2 2026 filing shows 548 new, 1,084 increased, 1,502 reduced and 621 closed positions. Its largest new stake was Amazon: 2,290,710 shares worth $546M. The largest sale was Micron Technology, an estimated $1.46B.
By sector, the portfolio is most concentrated in Technology at 24% of assets, up from 22% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Jim Simons's largest Q2 2026 buy was Amazon: 2,290,710 shares worth $546M.
- Jim Simons added most to Meta Platforms (Facebook) in Q2 2026, an estimated $1.08B increase.
- Jim Simons's biggest Q2 2026 reduction was Micron Technology, cutting an estimated $1.46B.
- Jim Simons fully exited Applovin in Q2 2026, selling an estimated $174M.
- Jim Simons's ten largest holdings make up 12% of its $72.6B portfolio in Q2 2026.
- Jim Simons opened 548 new positions and closed 621 in Q2 2026.
- Jim Simons's portfolio value rose 14% quarter-over-quarter to $72.6B.
Based on Renaissance Technologies's 13F filing for Q2 2026, filed 13 Aug 2026.