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Jim Simons

Jim Simons Renaissance Technologies

AUM $72.6B
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
+16.99%
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
$75.2B
AUM Growth
+$9.1B
Cap. Flow
+$1.81B
Cap. Flow %
2.4%
Top 10 Hldgs %
12.06%
Holding
4,018
New
612
Increased
1,577
Reduced
1,314
Closed
496

Top Buys

Rank Stock Value
1
NVDA icon
NVIDIA
NVDA
+$798M
2
NFLX icon
Netflix
NFLX
+$608M
3
UNH icon
UnitedHealth
UNH
+$517M
4
AAPL icon
Apple
AAPL
+$461M
5
GEV icon
GE Vernova
GEV
+$296M

Sector Composition

Rank Sector Weight
1 Technology 19.57%
2 Healthcare 15.8%
3 Consumer Discretionary 12.38%
4 Financials 11.53%
5 Industrials 8.92%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake
Capital Flow
EXFY icon
1876
Expensify
EXFY
$202M
$2.9M ﹤0.01%
1,118,200
+180,100
+19% +$460K
PVBC
1877
DELISTED
Provident Bancorp
PVBC
$2.89M ﹤0.01%
231,672
+101,200
+78% +$1.15M
IYF icon
1878
iShares US Financials ETF
IYF
$4.44B
$2.89M ﹤0.01%
+23,900
New +$2.69M
CTEV
1879
Claritev Corp
CTEV
$716M
$2.89M ﹤0.01%
63,963
+11,348
+22% +$326K
VVX icon
1880
V2X
VVX
$2.55B
$2.88M ﹤0.01%
59,400
-2,500
-4% -$119K
ETWO
1881
DELISTED
E2open Parent Holdings
ETWO
$2.88M ﹤0.01%
891,600
+732,800
+461% +$1.93M
SRTA
1882
Strata Critical Medical Inc
SRTA
$528M
$2.87M ﹤0.01%
711,686
+121,647
+21% +$396K
INFU icon
1883
InfuSystem Holdings
INFU
$249M
$2.87M ﹤0.01%
459,609
+124,994
+37% +$691K
CION icon
1884
CION Investment
CION
$382M
$2.86M ﹤0.01%
298,700
-278,600
-48% -$2.65M
FIRY
1885
Firy Inc
FIRY
$158M
$2.85M ﹤0.01%
418,225
+1,700
+0.4% +$9.44K
KOD icon
1886
Kodiak Sciences
KOD
$2.5B
$2.85M ﹤0.01%
764,137
+61,537
+9% +$218K
USIG icon
1887
iShares Broad USD Investment Grade Corporate Bond ETF
USIG
$17.4B
$2.85M ﹤0.01%
55,400
+48,900
+752% +$2.47M
KFY icon
1888
Korn Ferry
KFY
$4.36B
$2.85M ﹤0.01%
+38,800
New +$2.58M
LILA icon
1889
Liberty Latin America Class A
LILA
$1.67B
$2.85M ﹤0.01%
686,541
-66,768
-9% -$242K
CAMT icon
1890
Camtek
CAMT
$8.06B
$2.84M ﹤0.01%
33,640
-10,900
-24% -$735K
NHI icon
1891
National Health Investors
NHI
$3.5B
$2.84M ﹤0.01%
+40,500
New +$2.97M
KD icon
1892
Kyndryl
KD
$3.04B
$2.84M ﹤0.01%
67,600
-551,767
-89% -$20M
VMD icon
1893
Viemed Healthcare
VMD
$349M
$2.84M ﹤0.01%
410,300
+25,900
+7% +$176K
CRON
1894
Cronos Group
CRON
$1.16B
$2.83M ﹤0.01%
1,481,749
+346,096
+30% +$656K
NATL icon
1895
NCR Atleos
NATL
$3.47B
$2.82M ﹤0.01%
98,800
+5,900
+6% +$159K
ALRS icon
1896
Alerus Financial
ALRS
$844M
$2.81M ﹤0.01%
129,975
+3,315
+3% +$66.3K
CENX icon
1897
Century Aluminum
CENX
$4.59B
$2.8M ﹤0.01%
+155,599
New +$2.64M
NPO icon
1898
Enpro
NPO
$7.12B
$2.8M ﹤0.01%
+14,600
New +$2.5M
PANL icon
1899
Pangaea Logistics
PANL
$496M
$2.79M ﹤0.01%
594,100
-2,986
-0.5% -$13.3K
ESGE icon
1900
iShares ESG Aware MSCI EM ETF
ESGE
$6.86B
$2.79M ﹤0.01%
71,200
+64,500
+963% +$2.34M

Similar funds

Jim Simons's Q2 2025 Portfolio in Review

As of Q2 2025, Jim Simons held 4,018 positions worth $75.2B, up 14% from $66.1B the previous quarter. Its ten largest holdings account for 12% of the portfolio.

Jim Simons's Q2 2025 filing shows 612 new, 1,577 increased, 1,314 reduced and 496 closed positions. Its largest new stake was UnitedHealth: 1,352,129 shares worth $422M. The largest sale was Broadcom, an estimated $527M.

By sector, the portfolio is most concentrated in Technology at 20% of assets, up from 17% a quarter earlier, followed by Healthcare and Consumer Discretionary.

  • Jim Simons's largest Q2 2025 buy was UnitedHealth: 1,352,129 shares worth $422M.
  • Jim Simons added most to NVIDIA in Q2 2025, an estimated $798M increase.
  • Jim Simons's biggest Q2 2025 reduction was Broadcom, cutting an estimated $527M.
  • Jim Simons fully exited Advanced Micro Devices in Q2 2025, selling an estimated $328M.
  • Jim Simons's ten largest holdings make up 12% of its $75.2B portfolio in Q2 2025.
  • Jim Simons opened 612 new positions and closed 496 in Q2 2025.
  • Jim Simons's portfolio value rose 14% quarter-over-quarter to $75.2B.

Based on Renaissance Technologies's 13F filing for Q2 2025, filed 13 Aug 2025.