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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
+17.5%
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
$75.8B
AUM Growth
+$582M
Cap. Flow
-$5.41B
Cap. Flow %
-7.14%
Top 10 Hldgs %
11.47%
Holding
4,038
New
516
Increased
1,457
Reduced
1,457
Closed
581

Top Buys

Rank Stock Value
1
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$546M
2
MSFT icon
Microsoft
MSFT
+$480M
3
GOOG icon
Alphabet (Google) Class C
GOOG
+$362M
4
META icon
Meta Platforms (Facebook)
META
+$350M
5
KO icon
Coca-Cola
KO
+$266M

Top Sells

Rank Stock Value
1
HOOD icon
Robinhood
HOOD
+$1.04B
2
PLTR icon
Palantir
PLTR
+$800M
3
AAPL icon
Apple
AAPL
+$516M
4
NFLX icon
Netflix
NFLX
+$326M
5
NVDA icon
NVIDIA
NVDA
+$313M

Sector Composition

Rank Sector Weight
1 Technology 21.71%
2 Healthcare 15.16%
3 Consumer Discretionary 11.81%
4 Communication Services 10.53%
5 Financials 9.27%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
VPL icon
3976
Vanguard FTSE Pacific ETF
VPL
$8.42B
– –
-36,700
Closed -$3.02M
VPU
3977
Vanguard Utilities ETF
VPU
$8.44B
– –
-12,100
Closed -$2.14M
VRSK icon
3978
Verisk Analytics
VRSK
$23.6B
– –
-390,200
Closed -$122M
VSAT icon
3979
Viasat
VSAT
$11.6B
– –
-251,049
Closed -$3.67M
VSTM icon
3980
Verastem
VSTM
$638M
– –
-98,600
Closed -$409K
VT icon
3981
Vanguard Total World Stock ETF
VT
$81.1B
– –
-17,300
Closed -$2.22M
VTAK icon
3982
Catheter Precision
VTAK
$1.06M
– –
-1,260
Closed -$5.79K
VUZI icon
3983
Vuzix
VUZI
$220M
– –
-196,196
Closed -$573K
VXRT
3984
DELISTED
Vaxart
VXRT
– –
-597,443
Closed -$270K
VXX icon
3985
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
$145M
– –
-106,078
Closed -$5.1M
YARW
3986
Yarrow Bioscience, Inc. Common Stock
YARW
$115M
– –
-211
Closed -$17.4K
WATT icon
3987
Energous
WATT
$103M
– –
-7,797
Closed -$63.8K
WBA
3988
DELISTED
Walgreens Boots Alliance
WBA
– –
-1,350,700
Closed -$15.5M
WHD icon
3989
Cactus
WHD
$5.78B
– –
-24,100
Closed -$1.05M
WMS icon
3990
Advanced Drainage Systems
WMS
$10.8B
– –
-9,837
Closed -$1.13M
WNS
3991
DELISTED
WNS Holdings
WNS
– –
-34,400
Closed -$2.18M
WRB icon
3992
W.R. Berkley
WRB
$26B
– –
-44,766
Closed -$3.29M
WST icon
3993
West Pharmaceutical
WST
$24.7B
– –
-24,300
Closed -$5.32M
XAIR icon
3994
Beyond Air
XAIR
$4.21M
– –
-896
Closed -$61.7K
XBI icon
3995
State Street SPDR S&P Biotech ETF
XBI
$10.4B
– –
-48,800
Closed -$4.05M
XEL icon
3996
Xcel Energy
XEL
$48.5B
– –
-183,700
Closed -$12.5M
XGN icon
3997
Exagen
XGN
$164M
– –
-21,000
Closed -$147K
XLC icon
3998
State Street Communication Services Select Sector SPDR ETF
XLC
$22.5B
– –
-5,600
Closed -$608K
XLI icon
3999
State Street Industrial Select Sector SPDR ETF
XLI
$34.7B
– –
-206,600
Closed -$30.5M
XME icon
4000
State Street SPDR S&P Metals & Mining ETF
XME
$4.56B
– –
-10,300
Closed -$692K
158 159
160
161 162

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Jim Simons's Q3 2025 Portfolio in Review

As of Q3 2025, Jim Simons held 4,038 positions worth $75.8B, up 0.77% from $75.2B the previous quarter. Its ten largest holdings account for 11% of the portfolio.

Jim Simons withdrew a net $5.41B in Q3 2025, closing 581 positions and reducing 1,457 holdings. Its most notable exit was GE Aerospace, an estimated $235M position sold in full.

By sector, the portfolio is most concentrated in Technology at 22% of assets, up from 20% a quarter earlier, followed by Healthcare and Consumer Discretionary.

Against the trend, Jim Simons opened a new position in Alphabet (Google) Class C worth $419M.

  • Jim Simons's largest Q3 2025 buy was Alphabet (Google) Class C: 1,720,002 shares worth $419M.
  • Jim Simons added most to Alphabet (Google) Class A in Q3 2025, an estimated $546M increase.
  • Jim Simons's biggest Q3 2025 reduction was Robinhood, cutting an estimated $1.04B.
  • Jim Simons fully exited GE Aerospace in Q3 2025, selling an estimated $235M.
  • Jim Simons's ten largest holdings make up 11% of its $75.8B portfolio in Q3 2025.
  • Jim Simons opened 516 new positions and closed 581 in Q3 2025.
  • Jim Simons's portfolio value rose 0.77% quarter-over-quarter to $75.8B.

Based on Renaissance Technologies's 13F filing for Q3 2025, filed 13 Nov 2025.