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Jim Simons

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
+887.93%
AUM
$72.6B
AUM Growth
+$8.69B
Cap. Flow
+$958M
Cap. Flow %
1.32%
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 Sells

Rank Stock Value
1
MU icon
Micron Technology
MU
+$1.46B
2
SNDK icon
Sandisk
SNDK
+$1.13B
3
AAPL icon
Apple
AAPL
+$426M
4
LIN icon
Linde
LIN
+$316M
5
VRT icon
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
OR icon
626
OR Royalties Inc
OR
$6.52B
$23.9M 0.03%
754,302
-29,000
-4% -$1.07M
2017 Q2
36 quarters
AGCO icon
627
AGCO
AGCO
$7.15B
$23.8M 0.03%
198,700
-78,000
-28% -$9.06M
2025 Q2
4 quarters
ALHC icon
628
Alignment Healthcare
ALHC
$1.74B
$23.8M 0.03%
998,400
-1,904,700
-66% -$36.6M
2021 Q4
18 quarters
BND icon
629
Vanguard Total Bond Market
BND
$163B
$23.7M 0.03%
323,400
+287,700
+806% +$21.1M
2026 Q1
1 quarter
NTLA icon
630
Intellia Therapeutics
NTLA
$1.62B
$23.7M 0.03%
+1,400,004
New +$19.6M
2026 Q2
0 quarters
BTG icon
631
B2Gold
BTG
$6.88B
$23.7M 0.03%
6,331,176
+3,656,518
+137% +$16.8M
2015 Q3
43 quarters
OSW icon
632
OneSpaWorld
OSW
$2.4B
$23.6M 0.03%
837,028
-225,444
-21% -$5.57M
2022 Q1
17 quarters
KVYO icon
633
Klaviyo
KVYO
$4.99B
$23.6M 0.03%
1,560,244
-80,600
-5% -$1.34M
2023 Q4
10 quarters
ON icon
634
ON Semiconductor
ON
$28.5B
$23.5M 0.03%
+248,196
New +$25.4M
2026 Q2
0 quarters
KRNY icon
635
Kearny Financial
KRNY
$560M
$23.5M 0.03%
2,479,729
-152,687
-6% -$1.26M
2013 Q2
52 quarters
TPG icon
636
TPG
TPG
$7.19B
$23.4M 0.03%
577,000
+38,200
+7% +$1.61M
2026 Q1
1 quarter
TNGX icon
637
Tango Therapeutics
TNGX
$3.97B
$23.4M 0.03%
+748,300
New +$18.5M
2026 Q2
0 quarters
SCHX icon
638
Schwab US Large- Cap ETF
SCHX
$74.2B
$23.2M 0.03%
787,200
+701,900
+823% +$20M
2025 Q4
2 quarters
NFBK icon
639
DELISTED
Northfield Bancorp
NFBK
$23.1M 0.03%
1,567,649
+259,200
+20% +$3.67M
2013 Q2
52 quarters
KGS icon
640
Kodiak Gas Services
KGS
$4.77B
$23.1M 0.03%
307,122
-531,500
-63% -$36.1M
2023 Q3
11 quarters
CNX icon
641
CNX Resources
CNX
$5.28B
$23M 0.03%
678,416
+215,300
+46% +$7.76M
2026 Q1
1 quarter
HOV icon
642
Hovnanian Enterprises
HOV
$541M
$23M 0.03%
161,315
-2,100
-1% -$240K
2016 Q4
38 quarters
CARG icon
643
CarGurus
CARG
$2.76B
$23M 0.03%
673,827
+330,100
+96% +$10.7M
2024 Q3
7 quarters
BBD icon
644
Banco Bradesco
BBD
$44B
$22.9M 0.03%
6,612,266
-5,703,729
-46% -$20.9M
2023 Q1
13 quarters
AS icon
645
Amer Sports
AS
$17.6B
$22.9M 0.03%
676,000
-116,845
-15% -$4.09M
2025 Q1
5 quarters
LSTR icon
646
Landstar System
LSTR
$5.71B
$22.8M 0.03%
110,236
+29,796
+37% +$5.7M
2022 Q1
17 quarters
FWONA icon
647
Liberty Media Corporation Series A Common Stock
FWONA
$20.7B
$22.7M 0.03%
259,422
-87,700
-25% -$7.22M
2014 Q4
46 quarters
MKTX icon
648
MarketAxess Holdings
MKTX
$5.79B
$22.7M 0.03%
200,000
+32,900
+20% +$4.69M
2024 Q1
9 quarters
UVSP icon
649
Univest Financial
UVSP
$1.13B
$22.6M 0.03%
515,789
-67,945
-12% -$2.66M
2013 Q2
52 quarters
FTRE icon
650
Fortrea Holdings
FTRE
$2.13B
$22.4M 0.03%
1,289,609
-143,100
-10% -$1.93M
2023 Q3
11 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.