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Jim Simons

Jim Simons Renaissance Technologies

AUM $63.9B
1-Year Est. Return 45.56%
 

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
+45.56%
3 Year Est. Return
+129.95%
5 Year Est. Return
+153.6%
10 Year Est. Return
+738.31%
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
SES icon
3851
SES AI
SES
$206M
– –
-450,000
Closed -$234K
SGOL icon
3852
abrdn Physical Gold Shares ETF
SGOL
$7.46B
– –
-503,300
Closed -$15M
SGOV icon
3853
iShares 0-3 Month Treasury Bond ETF
SGOV
$101B
– –
-1,143,900
Closed -$115M
SHAK icon
3854
Shake Shack
SHAK
$2.9B
– –
-397,300
Closed -$35M
SH icon
3855
ProShares Short S&P500
SH
$846M
– –
-76,800
Closed -$3.42M
SHOP icon
3856
Shopify
SHOP
$196B
– –
-493,400
Closed -$47.1M
SHV icon
3857
iShares 0-1 Year Treasury Bond ETF
SHV
$20.6B
– –
-1,040,800
Closed -$115M
SHYF
3858
DELISTED
The Shyft Group
SHYF
– –
-32,048
Closed -$259K
SKM icon
3859
SK Telecom
SKM
$12.9B
– –
-233,200
Closed -$4.96M
SKYH icon
3860
Sky Harbour Group
SKYH
$387M
– –
-12,325
Closed -$160K
SKYT
3861
DELISTED
SkyWater Technology
SKYT
– –
-99,500
Closed -$705K
SKYY icon
3862
First Trust Cloud Computing ETF
SKYY
$3.22B
– –
-11,600
Closed -$1.19M
SLDB icon
3863
Solid Biosciences
SLDB
$949M
– –
-175,400
Closed -$649K
SLDP icon
3864
Solid Power
SLDP
$550M
– –
-17,000
Closed -$17.9K
SLG icon
3865
SL Green Realty
SLG
$3.95B
– –
-202,826
Closed -$11.7M
SLRN
3866
DELISTED
ACELYRIN
SLRN
– –
-599,800
Closed -$1.48M
SLS icon
3867
SELLAS Life Sciences
SLS
$2.17B
– –
-34,892
Closed -$37.7K
SLYV icon
3868
State Street SPDR S&P 600 Small Cap Value ETF
SLYV
$5.06B
– –
-30,300
Closed -$2.38M
SMH icon
3869
VanEck Semiconductor ETF
SMH
$70.6B
– –
-252,067
Closed -$53.3M
SMP icon
3870
Standard Motor Products
SMP
$889M
– –
-9,100
Closed -$227K
SN icon
3871
SharkNinja
SN
$26.4B
– –
-224,700
Closed -$18.7M
FTH
3872
Faeth Therapeutics
FTH
$773M
– –
-8,865
Closed -$69.9K
SO icon
3873
Southern Company
SO
$106B
– –
-189,700
Closed -$17.4M
SOXQ icon
3874
Invesco PHLX Semiconductor ETF
SOXQ
$2.85B
– –
-12,500
Closed -$421K
SOXX icon
3875
iShares Semiconductor ETF
SOXX
$45.2B
– –
-24,200
Closed -$4.55M
153 154
155
156 157

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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.