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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

Top Sells

Rank Stock Value
1
AVGO icon
Broadcom
AVGO
+$527M
2
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$372M
3
META icon
Meta Platforms (Facebook)
META
+$362M
4
AMD icon
Advanced Micro Devices
AMD
+$328M
5
PLTR icon
Palantir
PLTR
+$327M

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
BBBY
3576
Bed Bath & Beyond
BBBY
$423M
– –
-540,870
Closed -$2.85M
BYRN icon
3577
Byrna Technologies
BYRN
$97.6M
– –
-112,500
Closed -$1.89M
BZH icon
3578
Beazer Homes USA
BZH
$874M
– –
-65,128
Closed -$1.33M
CALF icon
3579
Pacer US Small Cap Cash Cows 100 ETF
CALF
$3.9B
– –
-34,800
Closed -$1.3M
CARR icon
3580
Carrier Global
CARR
$52.2B
– –
-43,500
Closed -$2.76M
CAT icon
3581
Caterpillar
CAT
$393B
– –
-63,360
Closed -$20.9M
CATX icon
3582
Perspective Therapeutics
CATX
$354M
– –
-163,460
Closed -$348K
CBT icon
3583
Cabot Corp
CBT
$4.45B
– –
-29,800
Closed -$2.48M
CBUS icon
3584
Cibus
CBUS
$145M
– –
-22,484
Closed -$42K
CEG icon
3585
Constellation Energy
CEG
$98.7B
– –
-477,400
Closed -$96.3M
CHDN icon
3586
Churchill Downs
CHDN
$6.2B
– –
-9,550
Closed -$1.06M
CIEN icon
3587
Ciena
CIEN
$62.7B
– –
-309,174
Closed -$18.7M
CIM
3588
Chimera Investment
CIM
$993M
– –
-109,253
Closed -$1.4M
CLH icon
3589
Clean Harbors
CLH
$16.9B
– –
-3,433
Closed -$677K
CLIP icon
3590
Global X 1-3 Month T-Bill ETF
CLIP
$2.4B
– –
-350,300
Closed -$35.2M
CMCO icon
3591
Columbus McKinnon
CMCO
$550M
– –
-57,285
Closed -$970K
CMG icon
3592
Chipotle Mexican Grill
CMG
$41.3B
– –
-1,393,020
Closed -$69.9M
CMTG icon
3593
Claros Mortgage Trust
CMTG
$268M
– –
-26,500
Closed -$98.8K
CNO icon
3594
CNO Financial Group
CNO
$5.07B
– –
-9,700
Closed -$404K
CODA icon
3595
Coda Octopus Group
CODA
$115M
– –
-13,114
Closed -$81.8K
COGT icon
3596
Cogent Biosciences
COGT
$6.47B
– –
-254,768
Closed -$1.53M
COOP
3597
DELISTED
Mr. Cooper
COOP
– –
-27,999
Closed -$3.35M
COST icon
3598
Costco
COST
$427B
– –
-121,199
Closed -$115M
COWZ icon
3599
Pacer US Cash Cows 100 ETF
COWZ
$19.8B
– –
-43,700
Closed -$2.39M
CPHI icon
3600
China Pharma Holdings
CPHI
$44.2M
– –
-4,610
Closed -$12.1K
142 143
144
145 146

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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.