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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
XENE icon
3826
Xenon Pharmaceuticals
XENE
$6.11B
– –
-5,200
Closed -$209K
XFOR icon
3827
X4 Pharmaceuticals
XFOR
$424M
– –
-19,177
Closed -$65.6K
XLV icon
3828
State Street Health Care Select Sector SPDR ETF
XLV
$43.9B
– –
-341,900
Closed -$47.6M
XOM icon
3829
ExxonMobil
XOM
$657B
– –
-1,865
Closed -$209K
XOP icon
3830
State Street SPDR S&P Oil & Gas Exploration & Production ETF
XOP
$3.67B
– –
-22,800
Closed -$3.01M
XPEV icon
3831
XPeng
XPEV
$11.4B
– –
-1,794,967
Closed -$42M
XSD icon
3832
State Street SPDR S&P Semiconductor ETF
XSD
$2.85B
– –
-2,100
Closed -$670K
XSMO icon
3833
Invesco S&P SmallCap Momentum ETF
XSMO
$3.11B
– –
-5,400
Closed -$397K
XYF
3834
X Financial
XYF
$206M
– –
-81,875
Closed -$1.13M
YHGJ icon
3835
Yunhong Green CTI Ltd
YHGJ
$8.77M
– –
-10,817
Closed -$48.8K
YINN icon
3836
Direxion Daily FTSE China Bull 3X ETF
YINN
$697M
– –
-51,000
Closed -$2.77M
YMAX icon
3837
YieldMax Universe Fund of Option Income ETFs
YMAX
$396M
– –
-92,400
Closed -$1.18M
YUM icon
3838
Yum! Brands
YUM
$39.5B
– –
-48,300
Closed -$7.34M
ZBH icon
3839
Zimmer Biomet
ZBH
$18.5B
– –
-121,800
Closed -$12M
ZEPP
3840
Zepp Health
ZEPP
$75.5M
– –
-23,824
Closed -$1.09M
ZH
3841
Zhihu
ZH
$284M
– –
-86,288
Closed -$437K
ZIMV
3842
DELISTED
ZimVie
ZIMV
– –
-102,500
Closed -$1.94M
ZYXI
3843
DELISTED
Zynex
ZYXI
– –
-199,562
Closed -$289K
NEUE
3844
DELISTED
NeueHealth
NEUE
– –
-56,263
Closed -$375K
QQQI icon
3845
NEOS Nasdaq 100 High Income ETF
QQQI
$13.9B
– –
-27,500
Closed -$1.49M
XTKG
3846
DELISTED
X3 Holdings Co., Ltd. Class A Ordinary Shares
XTKG
– –
-146
Closed -$43.6K
PRKS icon
3847
United Parks & Resorts
PRKS
$2B
– –
-111,600
Closed -$5.77M
RYDE icon
3848
Ryde Group
RYDE
$141M
– –
-20,936
Closed -$7.93K
LOT
3849
Lotus Technology
LOT
$577M
– –
-18,900
Closed -$38.7K
ULTY icon
3850
YieldMax Ultra Option Income Strategy ETF
ULTY
$760M
– –
-63,420
Closed -$3.47M
152 153
154
155 156

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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.