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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
+2.8%
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
$64.5B
AUM Growth
-$11.3B
Cap. Flow
-$10.1B
Cap. Flow %
-15.68%
Top 10 Hldgs %
12.13%
Holding
3,923
New
466
Increased
1,028
Reduced
1,682
Closed
737

Top Buys

Rank Stock Value
1
COST icon
Costco
COST
+$616M
2
NFLX icon
Netflix
NFLX
+$481M
3
MU icon
Micron Technology
MU
+$416M
4
TSLA icon
Tesla
TSLA
+$416M
5
PG icon
Procter & Gamble
PG
+$322M

Top Sells

Rank Stock Value
1
NVDA icon
NVIDIA
NVDA
+$885M
2
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$660M
3
GOOG icon
Alphabet (Google) Class C
GOOG
+$463M
4
APP icon
Applovin
APP
+$430M
5
META icon
Meta Platforms (Facebook)
META
+$354M

Sector Composition

Rank Sector Weight
1 Technology 20.84%
2 Healthcare 15.77%
3 Consumer Discretionary 13.88%
4 Industrials 9.94%
5 Financials 8.79%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
NBP
3476
NovaBridge Biosciences American Depositary Shares
NBP
$215M
– –
-63,600
Closed -$240K
IMCC
3477
IM Cannabis
IMCC
$1.16M
– –
-11,425
Closed -$21.9K
IMMR icon
3478
Immersion
IMMR
$244M
– –
-103,513
Closed -$760K
IMNM icon
3479
Immunome
IMNM
$3.06B
– –
-202,300
Closed -$2.37M
IMUX icon
3480
Immunic
IMUX
$210M
– –
-39,165
Closed -$345K
INFA
3481
DELISTED
Informatica
INFA
– –
-111,500
Closed -$2.77M
INFY icon
3482
Infosys
INFY
$49.4B
– –
-53,200
Closed -$866K
INM icon
3483
InMed Pharmaceuticals
INM
$7.85M
– –
-16,800
Closed -$36.8K
INSE icon
3484
Inspired Entertainment
INSE
$163M
– –
-25,200
Closed -$236K
INTA icon
3485
Intapp
INTA
$3.05B
– –
-238,600
Closed -$9.76M
INTU icon
3486
Intuit
INTU
$90.8B
– –
-257,148
Closed -$176M
IONQ icon
3487
IonQ
IONQ
$17.7B
– –
-5,079,700
Closed -$312M
IPG
3488
DELISTED
Interpublic Group of Companies
IPG
– –
-2,326,500
Closed -$64.9M
IQ icon
3489
iQIYI
IQ
$1.28B
– –
-1,759,600
Closed -$4.5M
IRBT
3490
DELISTED
iRobot
IRBT
– –
-116,676
Closed -$419K
ISPO
3491
DELISTED
Inspirato
ISPO
– –
-14,535
Closed -$43K
ISPC icon
3492
iSpecimen
ISPC
$3.29M
– –
-3,836
Closed -$198K
ITGR icon
3493
Integer Holdings
ITGR
$4.26B
– –
-32,500
Closed -$3.36M
ITP icon
3494
IT Tech Packaging
ITP
$2.95M
– –
-34,024
Closed -$9.83K
ITRM
3495
DELISTED
Iterum Therapeutics
ITRM
– –
-81,694
Closed -$54.7K
IUSB icon
3496
iShares Core Universal USD Bond ETF
IUSB
$43.2B
– –
-211,800
Closed -$9.89M
IVT icon
3497
InvenTrust Properties
IVT
$2.58B
– –
-225,500
Closed -$6.45M
IWS icon
3498
iShares Russell Mid-Cap Value ETF
IWS
$15.9B
– –
-9,800
Closed -$1.37M
IXJ icon
3499
iShares Global Healthcare ETF
IXJ
$4.23B
– –
-6,500
Closed -$576K
IYE icon
3500
iShares US Energy ETF
IYE
$1.79B
– –
-29,000
Closed -$1.38M
138 139
140
141 142

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Jim Simons's Q4 2025 Portfolio in Review

As of Q4 2025, Jim Simons held 3,923 positions worth $64.5B, down 15% from $75.8B the previous quarter. Its ten largest holdings account for 12% of the portfolio.

Jim Simons withdrew a net $10.1B in Q4 2025, closing 737 positions and reducing 1,682 holdings. Its most notable exit was Meta Platforms (Facebook), an estimated $354M position sold in full.

By sector, the portfolio is most concentrated in Technology at 21% of assets, down from 22% a quarter earlier, followed by Healthcare and Consumer Discretionary.

Against the trend, Jim Simons opened a new position in ServiceNow worth $204M.

  • Jim Simons's largest Q4 2025 buy was ServiceNow: 1,331,977 shares worth $204M.
  • Jim Simons added most to Costco in Q4 2025, an estimated $616M increase.
  • Jim Simons's biggest Q4 2025 reduction was NVIDIA, cutting an estimated $885M.
  • Jim Simons fully exited Meta Platforms (Facebook) in Q4 2025, selling an estimated $354M.
  • Jim Simons's ten largest holdings make up 12% of its $64.5B portfolio in Q4 2025.
  • Jim Simons opened 466 new positions and closed 737 in Q4 2025.
  • Jim Simons's portfolio value fell 15% quarter-over-quarter to $64.5B.

Based on Renaissance Technologies's 13F filing for Q4 2025, filed 12 Feb 2026.