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
+26.79%
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
$77.2B
AUM Growth
+$3.66B
Cap. Flow
-$1.09B
Cap. Flow %
-1.41%
Top 10 Hldgs %
42.09%
Holding
9,568
New
1,711
Increased
3,402
Reduced
3,106
Closed
1,157

Top Buys

Rank Stock Value
1
BABA icon
Alibaba
BABA
+$39.9M
2
QQQ icon
Invesco QQQ Trust
QQQ
+$39M
3
MA icon
Mastercard
MA
+$31.3M
4
AAPL icon
Apple
AAPL
+$25.3M
5
GOOG icon
Alphabet (Google) Class C
GOOG
+$25.1M

Top Sells

Rank Stock Value
1
JPM icon
JPMorgan Chase
JPM
+$52.8M
2
TSM icon
TSMC
TSM
+$43M
3
AMZN icon
Amazon
AMZN
+$24.7M
4
SLV icon
iShares Silver Trust
SLV
+$24.2M
5
NFLX icon
Netflix
NFLX
+$21.1M

Sector Composition

Rank Sector Weight
1 Consumer Discretionary 0.65%
2 Technology 0.37%
3 Healthcare 0.33%
4 Industrials 0.21%
5 Communication Services 0.19%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
FLNA
8976
Filana Therapeutics
FLNA
$45M
$0 ﹤0.01%
33,398
+10,048
+43% +$89.7K
SBGI icon
8977
Sinclair Inc
SBGI
$965M
– –
-22,258
Closed -$531K
SBRA icon
8978
Sabra Healthcare REIT
SBRA
$5.56B
– –
-357
Closed -$5.7K
SBS icon
8979
CALL
Sabesp
SBS
$20.1B
– –
-258
Closed -$41K
SBUX icon
8980
Starbucks
SBUX
$118B
– –
-9,140
Closed -$873K
SCHD icon
8981
Schwab US Dividend Equity ETF
SCHD
$100B
– –
-1,611
Closed -$29K
SCHH icon
8982
Schwab US REIT ETF
SCHH
$11.5B
– –
-456
Closed -$8K
SCHW
8983
Charles Schwab
SCHW
$177B
– –
-14,828
Closed -$671K
SCL icon
8984
Stepan Co
SCL
$1.31B
– –
-300
Closed -$32K
SCSC icon
8985
CALL
Scansource
SCSC
$1.1B
– –
-2
Closed -$3K
SHOE
8986
Shoe Station Group
SHOE
$388M
$0 ﹤0.01%
+38
New +$679
SCZ icon
8987
iShares MSCI EAFE Small-Cap ETF
SCZ
$13.4B
– –
-132
Closed -$7K
SDGR icon
8988
Schrodinger
SDGR
$1.13B
– –
-10,676
Closed -$671K
SE icon
8989
Sea Limited
SE
$60.9B
$0 ﹤0.01%
42,204
+6,935
+20% +$1.23M
SFIX
8990
Stitch Fix
SFIX
$471M
$0 ﹤0.01%
4,519
-76,065
-94% -$3.25M
SGC icon
8991
Superior Group of Companies
SGC
$197M
– –
-2,727
Closed -$64.4K
SGRY icon
8992
CALL
Surgery Partners
SGRY
$1.99B
– –
-126
Closed -$275K
SHAK icon
8993
Shake Shack
SHAK
$2.26B
$0 ﹤0.01%
2,201
-2,168
-50% -$168K
SHEN icon
8994
Shenandoah Telecom
SHEN
$635M
– –
-3,627
Closed -$163K
SHEN icon
8995
PUT
Shenandoah Telecom
SHEN
$635M
– –
-92
Closed -$408K
SHO icon
8996
CALL
Sunstone Hotel Investors
SHO
$2.17B
– –
-80
Closed -$63K
SHOO icon
8997
Steven Madden
SHOO
$3.08B
– –
-6,803
Closed -$193K
SIEB icon
8998
Siebert Financial
SIEB
$70.4M
– –
-7,981
Closed -$25K
SIEB icon
8999
PUT
Siebert Financial
SIEB
$70.4M
– –
-99
Closed -$31K
SIGA icon
9000
SIGA Technologies
SIGA
$226M
– –
-2,370
Closed -$16.7K
358 359
360
361 362

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 Q4 2020 Portfolio in Review

As of Q4 2020, Simplex Trading held 9,568 positions worth $77.2B, up 5% from $73.5B the previous quarter. Its ten largest holdings account for 42% of the portfolio.

Simplex Trading's Q4 2020 filing shows 1,711 new, 3,402 increased, 3,106 reduced and 1,157 closed positions. Its largest new stake was Alibaba: 143,630 shares worth $33.4M. The largest sale was JPMorgan Chase, an estimated $52.8M.

By sector, the portfolio is most concentrated in Consumer Discretionary at 0.65% of assets, up from 0.53% a quarter earlier, followed by Technology and Healthcare.

  • Simplex Trading's largest Q4 2020 buy was Alibaba: 143,630 shares worth $33.4M.
  • Simplex Trading added most to Invesco QQQ Trust in Q4 2020, an estimated $39M increase.
  • Simplex Trading's biggest Q4 2020 reduction was JPMorgan Chase, cutting an estimated $52.8M.
  • Simplex Trading fully exited Target in Q4 2020, selling an estimated $14.3M.
  • Simplex Trading's ten largest holdings make up 42% of its $77.2B portfolio in Q4 2020.
  • Simplex Trading opened 1,711 new positions and closed 1,157 in Q4 2020.
  • Simplex Trading's portfolio value rose 5% quarter-over-quarter to $77.2B.

Based on Simplex Trading's 13F filing for Q4 2020, filed 2 Feb 2021.