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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
STRR
3901
DELISTED
Star Equity Holdings
STRR
– –
-11,060
Closed -$22.1K
SUGP icon
3902
SU Group Holdings
SUGP
$3.49M
– –
-284
Closed -$6.8K
SUSA icon
3903
iShares ESG Optimized MSCI USA ETF
SUSA
$4.16B
– –
-1,700
Closed -$215K
SVT
3904
DELISTED
Servotronics
SVT
– –
-10,700
Closed -$502K
AXG
3905
Solowin Holdings
AXG
$502M
– –
-77,100
Closed -$246K
SWK icon
3906
Stanley Black & Decker
SWK
$15.7B
– –
-156,362
Closed -$10.6M
SWTX
3907
DELISTED
SpringWorks Therapeutics
SWTX
– –
-760,600
Closed -$35.7M
SYBT icon
3908
Stock Yards Bancorp
SYBT
$2.6B
– –
-8,900
Closed -$703K
SYRE icon
3909
Spyre Therapeutics
SYRE
$9.06B
– –
-30,936
Closed -$463K
TAN icon
3910
Invesco Solar ETF
TAN
$1.38B
– –
-13,874
Closed -$475K
TASK icon
3911
TaskUs
TASK
$633M
– –
-534,323
Closed -$8.96M
TDS icon
3912
Telephone and Data Systems
TDS
$3.84B
– –
-187,463
Closed -$6.67M
TDW icon
3913
Tidewater
TDW
$4.54B
– –
-112,883
Closed -$5.21M
TDY icon
3914
Teledyne Technologies
TDY
$31.6B
– –
-83,727
Closed -$42.9M
TECH icon
3915
Bio-Techne
TECH
$11.2B
– –
-590,700
Closed -$30.4M
TFX icon
3916
Teleflex
TFX
$5.91B
– –
-64,300
Closed -$7.61M
TGI
3917
DELISTED
Triumph Group
TGI
– –
-257,300
Closed -$6.63M
TIL icon
3918
Instil Bio
TIL
$50.8M
– –
-70,655
Closed -$1.47M
TKNO icon
3919
Alpha Teknova
TKNO
$378M
– –
-98,365
Closed -$483K
TLT icon
3920
iShares 20+ Year Treasury Bond ETF
TLT
$40.6B
– –
-3,600
Closed -$318K
TLTW icon
3921
iShares 20+ Year Treasury Bond BuyWrite Strategy ETF
TLTW
$1.83B
– –
-48,500
Closed -$1.12M
TMC icon
3922
TMC The Metals Company
TMC
$1.97B
– –
-100,900
Closed -$666K
TMF icon
3923
Direxion Daily 20+ Year Treasury Bull 3X ETF
TMF
$2.14B
– –
-94,540
Closed -$3.71M
TMHC
3924
DELISTED
Taylor Morrison
TMHC
– –
-4,053
Closed -$249K
TMO icon
3925
Thermo Fisher Scientific
TMO
$224B
– –
-458,950
Closed -$186M
155 156
157
158 159

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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.