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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
IVW icon
3701
iShares S&P 500 Growth ETF
IVW
$77.3B
– –
-37,700
Closed -$4.15M
IVZ icon
3702
Invesco
IVZ
$13.9B
– –
-442,600
Closed -$6.98M
IWN icon
3703
iShares Russell 2000 Value ETF
IWN
$14.6B
– –
-6,900
Closed -$1.09M
IWX icon
3704
iShares Russell Top 200 Value ETF
IWX
$4.03B
– –
-9,800
Closed -$825K
IXUS icon
3705
iShares Core MSCI Total International Stock ETF
IXUS
$60.7B
– –
-25,100
Closed -$1.94M
JBGS
3706
JBG SMITH
JBGS
$684M
– –
-117,800
Closed -$2.04M
JEF icon
3707
Jefferies Financial Group
JEF
$12.7B
– –
-537,589
Closed -$29.4M
JHG
3708
DELISTED
Janus Henderson
JHG
– –
-254,300
Closed -$9.88M
JIRE icon
3709
JPMorgan International Research Enhanced Equity ETF
JIRE
$11.4B
– –
-10,100
Closed -$715K
JMST icon
3710
JPMorgan Ultra-Short Municipal Income ETF
JMST
$7.15B
– –
-813,890
Closed -$41.4M
JNPR
3711
DELISTED
Juniper Networks
JNPR
– –
-1,090,291
Closed -$43.5M
JOBY icon
3712
Joby Aviation
JOBY
$7.97B
– –
-4,133,800
Closed -$43.6M
JOE icon
3713
St. Joe Company
JOE
$3.88B
– –
-9,000
Closed -$429K
JXN icon
3714
Jackson Financial
JXN
$8.83B
– –
-126,200
Closed -$11.2M
KALA icon
3715
KALA BIO
KALA
$16.7M
– –
-348
Closed -$82.8K
KBH icon
3716
KB Home
KBH
$3.48B
– –
-8,700
Closed -$461K
KC
3717
Kingsoft Cloud Holdings
KC
$3.48B
– –
-87,134
Closed -$1.09M
KD icon
3718
Kyndryl
KD
$2.79B
– –
-67,600
Closed -$2.84M
KDP icon
3719
Keurig Dr Pepper
KDP
$40B
– –
-642,800
Closed -$21.3M
KFY icon
3720
Korn Ferry
KFY
$4.25B
– –
-38,800
Closed -$2.85M
KNF icon
3721
Knife River
KNF
$3.88B
– –
-69,400
Closed -$5.67M
KNSL icon
3722
Kinsale Capital Group
KNSL
$8.49B
– –
-4,237
Closed -$2.05M
KNTK icon
3723
Kinetik
KNTK
$4.14B
– –
-138,362
Closed -$6.09M
KRC icon
3724
Kilroy Realty
KRC
$4.23B
– –
-355,700
Closed -$12.2M
KRG icon
3725
Kite Realty
KRG
$5.28B
– –
-367,203
Closed -$8.32M
147 148
149
150 151

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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.