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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
KRMD icon
3726
KORU Medical Systems
KRMD
$159M
– –
-104,600
Closed -$374K
KRYS icon
3727
Krystal Biotech
KRYS
$9.68B
– –
-89,800
Closed -$12.3M
KSS icon
3728
Kohl's
KSS
$2.1B
– –
-715,500
Closed -$6.07M
KTB icon
3729
Kontoor Brands
KTB
$4.14B
– –
-87,600
Closed -$5.78M
LAC
3730
Lithium Americas
LAC
$1.18B
– –
-491,800
Closed -$1.32M
LBRDA icon
3731
Liberty Broadband Class A
LBRDA
$5.33B
– –
-7,400
Closed -$724K
LCID icon
3732
Lucid Motors
LCID
$2.64B
– –
-1,745,135
Closed -$36.8M
LDOS icon
3733
Leidos
LDOS
$17.7B
– –
-88,550
Closed -$14M
LEN icon
3734
Lennar Class A
LEN
$21.1B
– –
-515,833
Closed -$57.1M
LEU icon
3735
Centrus Energy
LEU
$3.77B
– –
-122,300
Closed -$22.4M
LFT
3736
Lument Finance Trust
LFT
$36.8M
– –
-71,283
Closed -$158K
LITE icon
3737
Lumentum
LITE
$63.8B
– –
-8,500
Closed -$808K
LLY icon
3738
Eli Lilly
LLY
$1.08T
– –
-261
Closed -$205K
LMT icon
3739
Lockheed Martin
LMT
$138B
– –
-62,100
Closed -$28.8M
LOW icon
3740
Lowe's Companies
LOW
$124B
– –
-105,201
Closed -$23.3M
LQD icon
3741
iShares iBoxx $ Investment Grade Corporate Bond ETF
LQD
$32.6B
– –
-9,900
Closed -$1.09M
LVLU icon
3742
Lulu's Fashion Lounge
LVLU
$55.5M
– –
-3,600
Closed -$16.2K
MASI
3743
DELISTED
Masimo
MASI
– –
-25,377
Closed -$4.27M
MATW icon
3744
Matthews International
MATW
$733M
– –
-40,653
Closed -$972K
MATX icon
3745
Matsons
MATX
$6.11B
– –
-28,300
Closed -$3.15M
MDT icon
3746
Medtronic
MDT
$116B
– –
-432,541
Closed -$37.7M
MDYV icon
3747
State Street SPDR S&P 400 Mid Cap Value ETF
MDYV
$2.87B
– –
-8,700
Closed -$691K
MGPI icon
3748
MGP Ingredients
MGPI
$393M
– –
-21,973
Closed -$659K
MGRX icon
3749
Mangoceuticals
MGRX
$9.37M
– –
-31,000
Closed -$47.1K
MHK icon
3750
Mohawk Industries
MHK
$9.26B
– –
-81,300
Closed -$8.52M
148 149
150
151 152

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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.