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
GT icon
8601
Goodyear
GT
$2.07B
– –
-56,683
Closed -$571K
GTE icon
8602
CALL
Gran Tierra Energy
GTE
$260M
– –
-5
Closed -$1K
GTE icon
8603
Gran Tierra Energy
GTE
$260M
$0 ﹤0.01%
10
– –
GTES icon
8604
PUT
Gates Industrial Corporation Ltd.
GTES
$6.81B
– –
-200
Closed -$222K
GTIM icon
8605
Good Times Restaurants
GTIM
$14.7M
$0 ﹤0.01%
+129
New +$220
GTX icon
8606
Garrett Motion
GTX
$5.9B
– –
-102,739
Closed –
GWRE icon
8607
Guidewire Software
GWRE
$11.5B
– –
-1,292
Closed -$147K
HAE icon
8608
Haemonetics
HAE
$3.58B
– –
-645
Closed -$69.4K
HBIO icon
8609
Harvard Bioscience
HBIO
$27.1M
– –
-71
Closed -$2.65K
HBM icon
8610
Hudbay
HBM
$9.92B
$0 ﹤0.01%
30
-4,837
-99% -$27.3K
HCKT icon
8611
Hackett Group
HCKT
$245M
– –
-76
Closed -$1.05K
HDB icon
8612
HDFC Bank
HDB
$119B
– –
-51,186
Closed -$1.63M
HE icon
8613
Hawaiian Electric Industries
HE
$2.33B
– –
-3
Closed -$106
HEES
8614
DELISTED
H&E Equipment Services
HEES
– –
-3,939
Closed -$101K
HEI.A icon
8615
CALL
HEICO Corp Class A
HEI.A
$35.4B
– –
-107
Closed -$1.12M
HEI.A icon
8616
HEICO Corp Class A
HEI.A
$35.4B
– –
-100
Closed -$10.9K
HEI.A icon
8617
PUT
HEICO Corp Class A
HEI.A
$35.4B
– –
-10
Closed -$102K
HELE icon
8618
Helen of Troy
HELE
$663M
– –
-281
Closed -$57.9K
HES
8619
DELISTED
Hess
HES
– –
-25,703
Closed -$1.17M
HESM icon
8620
Hess Midstream
HESM
$5.22B
$0 ﹤0.01%
+48
New +$869
HHH icon
8621
Howard Hughes
HHH
$3.93B
– –
-8,316
Closed -$557K
HI
8622
DELISTED
Hillenbrand
HI
– –
-6,503
Closed -$224K
HII icon
8623
Huntington Ingalls Industries
HII
$11.3B
– –
-686
Closed -$109K
MCHB
8624
Mechanics Bancorp
MCHB
$3.47B
– –
-173
Closed -$5.56K
HOLX
8625
DELISTED
Hologic
HOLX
– –
-1,482
Closed -$105K
343 344
345
346 347

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.