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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
HSIC icon
3451
Henry Schein
HSIC
$10.1B
– –
-39,012
Closed -$2.59M
HSII
3452
DELISTED
Heidrick & Struggles
HSII
– –
-1,096,340
Closed -$54.6M
HUBS icon
3453
HubSpot
HUBS
$10.4B
– –
-82,900
Closed -$38.8M
HURN icon
3454
Huron Consulting
HURN
$2.37B
– –
-8,558
Closed -$1.26M
HYLB icon
3455
Xtrackers USD High Yield Corporate Bond ETF
HYLB
$3.48B
– –
-170,900
Closed -$6.34M
HYMB icon
3456
State Street SPDR Nuveen ICE High Yield Municipal Bond ETF
HYMB
$3.36B
– –
-59,000
Closed -$1.47M
HYS icon
3457
PIMCO 0-5 Year High Yield Corporate Bond Index Exchange-Traded Fund
HYS
$1.77B
– –
-18,464
Closed -$1.77M
IAGG icon
3458
iShares Core International Aggregate Bond Fund
IAGG
$11.4B
– –
-55,886
Closed -$2.86M
IAI icon
3459
iShares US Broker-Dealers & Securities Exchanges ETF
IAI
$1.37B
– –
-3,400
Closed -$601K
IAUX
3460
i-80 Gold Corp
IAUX
$1.5B
– –
-3,486,758
Closed -$3.33M
IBDS icon
3461
iShares iBonds Dec 2027 Term Corporate ETF
IBDS
$3.87B
– –
-201,516
Closed -$4.9M
IBDT icon
3462
iShares iBonds Dec 2028 Term Corporate ETF
IBDT
$4.07B
– –
-114,200
Closed -$2.91M
IBIT icon
3463
iShares Bitcoin Trust
IBIT
$47.2B
– –
-110,800
Closed -$7.2M
IBN icon
3464
ICICI Bank
IBN
$107B
– –
-642,550
Closed -$19.4M
ICE icon
3465
Intercontinental Exchange
ICE
$85B
– –
-328,839
Closed -$55.4M
ICG
3466
Intchains Group
ICG
$52.8M
– –
-29,400
Closed -$49.8K
ICVT icon
3467
iShares Convertible Bond ETF
ICVT
$7.62B
– –
-68,100
Closed -$6.81M
IDU icon
3468
iShares US Utilities ETF
IDU
$1.37B
– –
-3,100
Closed -$344K
IEI icon
3469
iShares 3-7 Year Treasury Bond ETF
IEI
$17.7B
– –
-49,200
Closed -$5.88M
IEX icon
3470
IDEX
IEX
$17.7B
– –
-170,425
Closed -$27.7M
IFF icon
3471
International Flavors & Fragrances
IFF
$21.4B
– –
-16,400
Closed -$1.01M
IGIB icon
3472
iShares 5-10 Year Investment Grade Corporate Bond ETF
IGIB
$18.5B
– –
-210,100
Closed -$11.4M
IGOV icon
3473
iShares International Treasury Bond ETF
IGOV
$1.53B
– –
-18,200
Closed -$775K
IJH icon
3474
iShares Core S&P Mid-Cap ETF
IJH
$128B
– –
-95,100
Closed -$6.21M
ILAG icon
3475
Intelligent Living
ILAG
$6.6M
– –
-6,361
Closed -$40.4K
137 138
139
140 141

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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.