We are live on ! Find out more
Simplex Trading

Simplex Trading Portfolio holdings

AUM $149B
1-Year Est. Return 62.07%
 

Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.

This Fund
S&P 500
This Quarter Est. Return
+6.46%
1 Year Est. Return
+62.07%
3 Year Est. Return
+116.86%
5 Year Est. Return
+116.02%
10 Year Est. Return
+774.44%
AUM
$122B
AUM Growth
+$7.84B
Cap. Flow
-$3.39B
Cap. Flow %
-2.78%
Top 10 Hldgs %
42.57%
Holding
10,535
New
1,474
Increased
3,350
Reduced
3,913
Closed
1,517

Top Buys

Rank Stock Value
1
MSFT icon
Microsoft
MSFT
+$53.9M
2
TLT icon
iShares 20+ Year Treasury Bond ETF
TLT
+$52.9M
3
NVDA icon
NVIDIA
NVDA
+$47.1M
4
PYPL icon
PayPal
PYPL
+$41.7M
5
GOOG icon
Alphabet (Google) Class C
GOOG
+$28.4M

Top Sells

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$51.4M
2
WMT icon
Walmart Inc
WMT
+$46.4M
3
OIH icon
VanEck Oil Services ETF
OIH
+$34.2M
4
ADBE icon
Adobe
ADBE
+$33.5M
5
SBUX icon
Starbucks
SBUX
+$26.8M

Sector Composition

Rank Sector Weight
1 Technology 0.41%
2 Healthcare 0.21%
3 Consumer Discretionary 0.21%
4 Communication Services 0.2%
5 Financials 0.15%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
DC icon
9126
Dakota Gold
DC
$624M
– –
-817
Closed -$2.69K
DC icon
9127
PUT
Dakota Gold
DC
$624M
– –
-300
Closed -$1K
DCOM icon
9128
Dime Commercial Bancshares
DCOM
$1.76B
– –
-63
Closed -$1.17K
DDL
9129
Dingdong
DDL
$534M
– –
-4,609
Closed -$15.4K
DDS icon
9130
CALL
Dillards
DDS
$8.87B
– –
-1,200
Closed -$369K
DDS icon
9131
PUT
Dillards
DDS
$8.87B
– –
-500
Closed -$153K
DECK icon
9132
Deckers Outdoor
DECK
$13.3B
– –
-9,828
Closed -$790K
DENN
9133
DELISTED
Denny's
DENN
– –
-5,298
Closed -$60.1K
DFEN icon
9134
Direxion Daily Aerospace & Defense Bull 3X ETF
DFEN
$389M
– –
-16,466
Closed -$343K
DFIN icon
9135
Donnelley Financial Solutions
DFIN
$1.2B
– –
-100
Closed -$4K
DFH icon
9136
Dream Finders Homes
DFH
$1.45B
$0 ﹤0.01%
+21
New +$378
DGX icon
9137
Quest Diagnostics
DGX
$25.4B
– –
-3,271
Closed -$451K
DHX icon
9138
DHI Group
DHX
$168M
– –
-158
Closed –
DIBS icon
9139
CALL
1stdibs.com
DIBS
$147M
– –
-2,600
Closed -$10K
DIBS icon
9140
1stdibs.com
DIBS
$147M
– –
-103
Closed -$392
DIN icon
9141
CALL
Dine Brands
DIN
$433M
– –
-7,500
Closed -$507K
DIVO icon
9142
Amplify CWP Enhanced Dividend Income ETF
DIVO
$7.41B
– –
-1,553
Closed -$55K
DJD icon
9143
Invesco Dow Jones Industrial Average Dividend ETF
DJD
$476M
– –
-300
Closed -$12K
DJIA icon
9144
Global X Dow 30 Covered Call ETF
DJIA
$182M
– –
-512
Closed -$11K
DJP icon
9145
iPath Bloomberg Commodity Index Total Return ETN due 12 June 2036
DJP
$816M
– –
-1,992
Closed -$62K
DKL icon
9146
Delek Logistics
DKL
$3.09B
– –
-2,299
Closed -$115K
DLPN icon
9147
Dolphin Entertainment
DLPN
$14.2M
$0 ﹤0.01%
71
-3,386
-98% -$13.4K
DLTH icon
9148
CALL
Duluth Holdings
DLTH
$163M
– –
-200
Closed -$1K
DLTH icon
9149
Duluth Holdings
DLTH
$163M
– –
-111
Closed -$662
DLTR icon
9150
Dollar Tree
DLTR
$23B
– –
-10,765
Closed -$1.58M
364 365
366
367 368

Similar funds

Mitsubishi UFJ Asset Management
Mitsubishi UFJ Asset Management Tokyo, Japan $149B AUM 24.71% 1-Year Est. Return
Creative Planning
Creative Planning Overland Park, Kansas $147B AUM 18.73% 1-Year Est. Return
Jennison Associates
Jennison Associates New York $145B AUM 34.61% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $154B AUM 29.96% 1-Year Est. Return
Canada Pension Plan Investment Board
Canada Pension Plan Investment Board Toronto Ontario, Ontario, Canada $155B AUM 29.93% 1-Year Est. Return
Victory Capital Management
Victory Capital Management San Antonio, Texas $156B AUM 27.51% 1-Year Est. Return
First Trust Advisors
First Trust Advisors Wheaton, Illinois $140B AUM 27.84% 1-Year Est. Return

Simplex Trading's Q2 2023 Portfolio in Review

As of Q2 2023, Simplex Trading held 10,535 positions worth $122B, up 6.9% from $114B the previous quarter. Its ten largest holdings account for 43% of the portfolio.

Simplex Trading's Q2 2023 filing shows 1,474 new, 3,350 increased, 3,913 reduced and 1,517 closed positions. Its largest new stake was Microsoft: 171,935 shares worth $58.5M. The largest sale was Apple, an estimated $51.4M.

By sector, the portfolio is most concentrated in Technology at 0.41% of assets, down from 0.42% a quarter earlier, followed by Healthcare and Consumer Discretionary.

  • Simplex Trading's largest Q2 2023 buy was Microsoft: 171,935 shares worth $58.5M.
  • Simplex Trading added most to iShares 20+ Year Treasury Bond ETF in Q2 2023, an estimated $52.9M increase.
  • Simplex Trading's biggest Q2 2023 reduction was Adobe, cutting an estimated $33.5M.
  • Simplex Trading fully exited Apple in Q2 2023, selling an estimated $51.4M.
  • Simplex Trading's ten largest holdings make up 43% of its $122B portfolio in Q2 2023.
  • Simplex Trading opened 1,474 new positions and closed 1,517 in Q2 2023.
  • Simplex Trading's portfolio value rose 6.9% quarter-over-quarter to $122B.

Based on Simplex Trading's 13F filing for Q2 2023, filed 4 Aug 2023.