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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
TALO icon
1101
Talos Energy
TALO
$3.01B
$9.16M 0.01%
709,700
+365,700
+106% +$5.45M
2024 Q3
7 quarters
ARCB icon
1102
ArcBest
ARCB
$2.94B
$9.15M 0.01%
63,735
+61,200
+2,414% +$7.96M
2025 Q3
3 quarters
NGVC icon
1103
Vitamin Cottage Natural Grocers
NGVC
$689M
$9.15M 0.01%
294,899
-32,200
-10% -$926K
2015 Q2
44 quarters
KORU icon
1104
Direxion Daily MSCI South Korea Bull 3X ETF
KORU
$1.04B
$9.13M 0.01%
+233,600
New +$8.44M
2026 Q2
0 quarters
INTT icon
1105
inTEST
INTT
$177M
$9.13M 0.01%
502,237
+52,028
+12% +$881K
2013 Q2
52 quarters
ZTO icon
1106
ZTO Express
ZTO
$14.9B
$9.1M 0.01%
406,600
-212,200
-34% -$5.05M
2022 Q1
17 quarters
CWCO icon
1107
Consolidated Water Co
CWCO
$447M
$9.09M 0.01%
308,267
+8,627
+3% +$270K
2013 Q2
52 quarters
SKYT icon
1108
DELISTED
SkyWater Technology
SKYT
$9.08M 0.01%
+260,900
New +$8.92M
2026 Q2
0 quarters
QUAL icon
1109
iShares MSCI USA Quality Factor ETF
QUAL
$48.9B
$9.08M 0.01%
+41,400
New +$8.68M
2026 Q2
0 quarters
DJCO icon
1110
Daily Journal
DJCO
$789M
$9.07M 0.01%
15,091
+1,720
+13% +$895K
2025 Q4
2 quarters
MBC icon
1111
MasterBrand
MBC
$1.37B
$9.06M 0.01%
880,781
-871,482
-50% -$7.44M
2022 Q4
14 quarters
CVGI icon
1112
Commercial Vehicle Group
CVGI
$114M
$9.04M 0.01%
1,956,659
+225,168
+13% +$1.06M
2015 Q3
43 quarters
PKX icon
1113
POSCO
PKX
$16.9B
$9.04M 0.01%
175,900
+161,989
+1,164% +$11.1M
2026 Q1
1 quarter
XLRE icon
1114
State Street Real Estate Select Sector SPDR ETF
XLRE
$7.84B
$9.03M 0.01%
+205,200
New +$9.02M
2026 Q2
0 quarters
DOX icon
1115
Amdocs
DOX
$6.42B
$9.03M 0.01%
178,700
-113,100
-39% -$6.94M
2025 Q3
3 quarters
NVGS icon
1116
Navigator Holdings
NVGS
$1.31B
$9.02M 0.01%
483,988
-49,000
-9% -$1.06M
2018 Q1
33 quarters
WTRG icon
1117
Essential Utilities
WTRG
$11.6B
$9.01M 0.01%
+235,283
New +$8.98M
2026 Q2
0 quarters
IBRX icon
1118
ImmunityBio
IBRX
$9.08B
$9.01M 0.01%
+1,029,399
New +$7.79M
2026 Q2
0 quarters
OSUR icon
1119
OraSure Technologies
OSUR
$264M
$8.99M 0.01%
2,014,903
-68,400
-3% -$242K
2013 Q2
52 quarters
ACEL icon
1120
Accel Entertainment
ACEL
$884M
$8.98M 0.01%
712,105
-32,900
-4% -$398K
2021 Q4
18 quarters
KMPR icon
1121
Kemper
KMPR
$1.71B
$8.97M 0.01%
332,610
-48,800
-13% -$1.42M
2024 Q3
7 quarters
ACIW icon
1122
ACI Worldwide
ACIW
$5.46B
$8.95M 0.01%
177,933
-172,400
-49% -$7.49M
2025 Q4
2 quarters
NAK icon
1123
Northern Dynasty Minerals
NAK
$490M
$8.93M 0.01%
4,650,149
+190,000
+4% +$381K
2026 Q1
1 quarter
RHLD icon
1124
Resolute Holdings Management
RHLD
$903M
$8.89M 0.01%
61,500
+41,700
+211% +$5.41M
2025 Q3
3 quarters
MBB icon
1125
iShares MBS ETF
MBB
$35.5B
$8.88M 0.01%
93,988
+65,988
+236% +$6.24M
2025 Q4
2 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.