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
SSL icon
8276
CALL
Sasol
SSL
$7.58B
$3K ﹤0.01%
300
-1,700
-85% -$21.9K
SSL icon
8277
PUT
Sasol
SSL
$7.58B
$3K ﹤0.01%
300
-2,400
-89% -$30.9K
TALK icon
8278
CALL
Talkspace
TALK
$873M
$3K ﹤0.01%
+3,000
New +$2.91K
TBBK icon
8279
The Bancorp
TBBK
$2.79B
$3K ﹤0.01%
100
+15
+18% +$462
TIPT icon
8280
CALL
Tiptree Inc
TIPT
$668M
$3K ﹤0.01%
200
-27,800
-99% -$387K
TMCI icon
8281
Treace Medical Concepts
TMCI
$259M
$3K ﹤0.01%
+127
New +$3.28K
TRAK icon
8282
CALL
ReposiTrak
TRAK
$148M
$3K ﹤0.01%
+300
New +$2.25K
TROO icon
8283
CALL
TROOPS Inc
TROO
$239M
$3K ﹤0.01%
+1,000
New +$3.91K
TRST
8284
Trustco Bank Corp NY
TRST
$977M
$3K ﹤0.01%
+111
New +$3.26K
TRTX
8285
PUT
TPG RE Finance Trust
TRTX
$666M
$3K ﹤0.01%
500
-800
-62% -$5.42K
TSHA icon
8286
Taysha Gene Therapies
TSHA
$1.59B
$3K ﹤0.01%
5,881
-4,886
-45% -$3.54K
TURN
8287
CALL
DELISTED
180 Degree Capital
TURN
$3K ﹤0.01%
+700
New +$3.27K
TYD icon
8288
Direxion Daily 7-10 Year Treasury Bull 3X ETF
TYD
$31.7M
$3K ﹤0.01%
131
-1,139
-90% -$35.5K
UAVS icon
8289
AgEagle Aerial Systems
UAVS
$41.4M
$3K ﹤0.01%
16
-1
-6% -$358
UBOT icon
8290
Direxion Daily Robotics Artificial Intelligence & Automation Index Bull 2X ETF
UBOT
$21.9M
$3K ﹤0.01%
136
-2,345
-95% -$45.4K
UDMY
8291
CALL
DELISTED
Udemy
UDMY
$3K ﹤0.01%
300
-7,800
-96% -$74.3K
USAU icon
8292
CALL
US Gold Corp
USAU
$220M
$3K ﹤0.01%
+700
New +$3.08K
USL icon
8293
PUT
United States 12 Month Oil Fund,
USL
$46.6M
$3K ﹤0.01%
100
-8,100
-99% -$269K
VHC icon
8294
CALL
VirnetX Holding Corp
VHC
$52.3M
$3K ﹤0.01%
365
-1,360
-79% -$16.7K
VOC icon
8295
PUT
VOC Energy
VOC
$57.5M
$3K ﹤0.01%
400
+100
+33% +$819
VONV icon
8296
Vanguard Russell 1000 Value ETF
VONV
$20.4B
$3K ﹤0.01%
+48
New +$3.22K
GGRP
8297
PUT
Glimpse Group
GGRP
$19M
$3K ﹤0.01%
+1,000
New +$4.1K
WIMI
8298
PUT
WiMi Hologram Cloud
WIMI
$21.1M
$3K ﹤0.01%
350
+40
+13% +$406
WKEY
8299
CALL
WISeKey
WKEY
$71.7M
$3K ﹤0.01%
1,880
+720
+62% +$4.1K
WWD icon
8300
Woodward
WWD
$25B
$3K ﹤0.01%
+26
New +$2.75K
330 331
332
333 334

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.