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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
MIR icon
3751
Mirion Technologies
MIR
$3.76B
– –
-115,900
Closed -$2.5M
MKC.V icon
3752
McCormick & Company Voting
MKC.V
$14.1B
– –
-2,800
Closed -$211K
MLPA icon
3753
Global X MLP ETF
MLPA
$2.29B
– –
-43,900
Closed -$2.2M
MLPX icon
3754
Global X MLP & Energy Infrastructure ETF
MLPX
$3.56B
– –
-19,900
Closed -$1.25M
MODV
3755
DELISTED
ModivCare
MODV
– –
-39,599
Closed -$124K
MOFG
3756
DELISTED
MidWestOne Financial Group
MOFG
– –
-25,600
Closed -$737K
MRK icon
3757
Merck
MRK
$328B
– –
-139,820
Closed -$11.1M
MRNA icon
3758
Moderna
MRNA
$25.2B
– –
-1,003,900
Closed -$27.7M
MSA icon
3759
Mine Safety
MSA
$7.4B
– –
-3,800
Closed -$637K
MSCI icon
3760
MSCI
MSCI
$40.7B
– –
-140,521
Closed -$81M
MTEK icon
3761
Maris-Tech
MTEK
$12.3M
– –
-72,700
Closed -$233K
MTG icon
3762
MGIC Investment
MTG
$6.3B
– –
-77,800
Closed -$2.17M
MTH icon
3763
Meritage Homes
MTH
$4.77B
– –
-70,000
Closed -$4.69M
MTN icon
3764
Vail Resorts
MTN
$5.26B
– –
-9,000
Closed -$1.41M
MTUM icon
3765
iShares MSCI USA Momentum Factor ETF
MTUM
$26B
– –
-24,600
Closed -$5.91M
MTZ icon
3766
MasTec
MTZ
$22.6B
– –
-66,323
Closed -$11.3M
MUX icon
3767
McEwen Inc
MUX
$1.18B
– –
-31,768
Closed -$305K
NCLH icon
3768
Norwegian Cruise Line
NCLH
$8.69B
– –
-427,726
Closed -$8.67M
NCMI icon
3769
National CineMedia
NCMI
$219M
– –
-25,600
Closed -$124K
NEM icon
3770
Newmont
NEM
$125B
– –
-1,139,800
Closed -$66.4M
NEWP
3771
New Pacific Metals
NEWP
$1.21B
– –
-241,314
Closed -$323K
NNDM
3772
Nano Dimension
NNDM
$354M
– –
-691,200
Closed -$1.12M
NOK icon
3773
Nokia
NOK
$57.9B
– –
-460,180
Closed -$2.38M
NOTE
3774
DELISTED
FiscalNote
NOTE
– –
-33,047
Closed -$213K
NUTX
3775
Nutex Health
NUTX
$1.17B
– –
-11,300
Closed -$1.41M
149 150
151
152 153

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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.