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
-4.86%
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
$88.5B
AUM Growth
-$5.62B
Cap. Flow
-$2.04B
Cap. Flow %
-2.3%
Top 10 Hldgs %
38.07%
Holding
11,570
New
1,564
Increased
4,281
Reduced
3,851
Closed
1,575

Top Buys

Rank Stock Value
1
MSFT icon
Microsoft
MSFT
+$114M
2
NVDA icon
NVIDIA
NVDA
+$85.9M
3
C icon
Citigroup
C
+$61.5M
4
BRK.B icon
Berkshire Hathaway Class B
BRK.B
+$45.5M
5
PFE icon
Pfizer
PFE
+$41.6M

Top Sells

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$467M
2
VOO icon
Vanguard S&P 500 ETF
VOO
+$71.2M
3
META icon
Meta Platforms (Facebook)
META
+$47.6M
4
INTC icon
Intel
INTC
+$41.9M
5
TSM icon
TSMC
TSM
+$35.9M

Sector Composition

Rank Sector Weight
1 Technology 0.51%
2 Financials 0.35%
3 Consumer Discretionary 0.3%
4 Healthcare 0.25%
5 Industrials 0.18%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
ALRS icon
9801
CALL
Alerus Financial
ALRS
$822M
– –
-5,000
Closed -$119K
ALTG icon
9802
CALL
Alta Equipment Group
ALTG
$210M
– –
-300
Closed -$2K
ALZN icon
9803
Alzamend Neuro
ALZN
$5.06M
– –
-2
Closed -$2.75K
AMG icon
9804
Affiliated Managers Group
AMG
$9.46B
– –
-36
Closed -$4K
AMG icon
9805
PUT
Affiliated Managers Group
AMG
$9.46B
– –
-100
Closed -$11K
AMKR icon
9806
Amkor Technology
AMKR
$16.1B
– –
-1,744
Closed -$33.6K
AMPL icon
9807
Amplitude
AMPL
$1.07B
– –
-9,790
Closed -$157K
AMRN
9808
Amarin Corp
AMRN
$284M
– –
-1,686
Closed -$45.2K
AMRX icon
9809
PUT
Amneal Pharmaceuticals
AMRX
$5.72B
– –
-9,700
Closed -$30K
AMSC icon
9810
American Superconductor
AMSC
$1.48B
– –
-10,057
Closed -$52K
AMSC icon
9811
PUT
American Superconductor
AMSC
$1.48B
– –
-11,800
Closed -$61K
AMX icon
9812
America Movil
AMX
$78.1B
– –
-11,776
Closed -$216K
ANET icon
9813
Arista Networks
ANET
$219B
– –
-3,360
Closed -$96.9K
ANGL icon
9814
VanEck Fallen Angel High Yield Bond ETF
ANGL
$3.07B
– –
-3,298
Closed -$89K
ANIK icon
9815
CALL
Anika Therapeutics
ANIK
$199M
– –
-1,100
Closed -$24K
ANIX icon
9816
PUT
Anixa Biosciences
ANIX
$126M
– –
-2,100
Closed -$6K
AOSL icon
9817
Alpha and Omega Semiconductor
AOSL
$923M
– –
-4,521
Closed -$167K
AP icon
9818
CALL
Ampco-Pittsburgh
AP
$167M
– –
-1,000
Closed -$3K
APH icon
9819
Amphenol
APH
$188B
– –
-46,908
Closed -$1.7M
APLT
9820
DELISTED
Applied Therapeutics
APLT
– –
-7,105
Closed -$8.52K
APP icon
9821
Applovin
APP
$132B
– –
-17,824
Closed -$533K
APPS icon
9822
Digital Turbine
APPS
$1.02B
– –
-36,409
Closed -$696K
APYX icon
9823
CALL
Apyx Medical
APYX
$165M
– –
-3,700
Closed -$21K
AQMS icon
9824
Aqua Metals
AQMS
$9.63M
– –
-8
Closed -$1.42K
AQST icon
9825
Aquestive Therapeutics
AQST
$462M
– –
-14,531
Closed -$16.4K
391 392
393
394 395

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 Q3 2022 Portfolio in Review

As of Q3 2022, Simplex Trading held 11,570 positions worth $88.5B, down 6% from $94.1B the previous quarter. Its ten largest holdings account for 38% of the portfolio.

Simplex Trading's Q3 2022 filing shows 1,564 new, 4,281 increased, 3,851 reduced and 1,575 closed positions. Its largest new stake was Microsoft: 432,062 shares worth $101M. The largest sale was Apple, an estimated $467M.

By sector, the portfolio is most concentrated in Technology at 0.51% of assets, down from 0.84% a quarter earlier, followed by Financials and Consumer Discretionary.

  • Simplex Trading's largest Q3 2022 buy was Microsoft: 432,062 shares worth $101M.
  • Simplex Trading added most to NVIDIA in Q3 2022, an estimated $85.9M increase.
  • Simplex Trading's biggest Q3 2022 reduction was Apple, cutting an estimated $467M.
  • Simplex Trading fully exited iShares Core S&P 500 ETF in Q3 2022, selling an estimated $34.3M.
  • Simplex Trading's ten largest holdings make up 38% of its $88.5B portfolio in Q3 2022.
  • Simplex Trading opened 1,564 new positions and closed 1,575 in Q3 2022.
  • Simplex Trading's portfolio value fell 6% quarter-over-quarter to $88.5B.

Based on Simplex Trading's 13F filing for Q3 2022, filed 4 Nov 2022.