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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
+5.12%
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
$1.5B
AUM Growth
+$242M
Cap. Flow
+$178M
Cap. Flow %
11.93%
Top 10 Hldgs %
18.61%
Holding
7,153
New
1,586
Increased
2,321
Reduced
1,709
Closed
1,363

Top Buys

Rank Stock Value
1
LNKD
LinkedIn Corporation
LNKD
+$21.4M
2
GLD icon
SPDR Gold Trust
GLD
+$17.3M
3
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
+$15M
4
BIIB icon
Biogen
BIIB
+$14.9M
5
V icon
Visa
V
+$14.1M

Top Sells

Rank Stock Value
1
AVGO icon
Broadcom
AVGO
+$36.7M
2
GOOG icon
Alphabet (Google) Class C
GOOG
+$20.1M
3
EEM icon
iShares MSCI Emerging Markets ETF
EEM
+$15.8M
4
C icon
Citigroup
C
+$14.7M
5
MDY icon
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
+$13.1M

Sector Composition

Rank Sector Weight
1 Communication Services 6.61%
2 Healthcare 6.55%
3 Technology 6.45%
4 Consumer Discretionary 4.54%
5 Financials 4.51%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
FIZZ icon
5976
PUT
National Beverage
FIZZ
$2.93B
– –
-184
Closed -$8K
FLEX icon
5977
CALL
Flex
FLEX
$40.6B
– –
-64
Closed -$4K
FLNT
5978
CALL
Fluent
FLNT
$100M
– –
-8
Closed -$3K
FLO icon
5979
PUT
Flowers Foods
FLO
$1.64B
– –
-63
Closed -$3K
FLWS icon
5980
CALL
1-800-Flowers.com
FLWS
$244M
– –
-23
Closed -$1K
FLWS icon
5981
1-800-Flowers.com
FLWS
$244M
– –
-1,921
Closed -$15.2K
FLWS icon
5982
PUT
1-800-Flowers.com
FLWS
$244M
– –
-59
Closed -$3K
FMX icon
5983
CALL
Fomento Económico Mexicano
FMX
$44.8B
– –
-72
Closed -$13K
FMX icon
5984
PUT
Fomento Económico Mexicano
FMX
$44.8B
– –
-16
Closed -$1K
FN icon
5985
CALL
Fabrinet
FN
$16.4B
– –
-8
Closed -$2K
FNF icon
5986
Fidelity National Financial
FNF
$14B
– –
-523
Closed -$12K
FNV icon
5987
Franco-Nevada
FNV
$41.4B
– –
-308
Closed -$20.8K
FOSL icon
5988
Fossil Group
FOSL
$246M
– –
-11,223
Closed -$378K
FR icon
5989
First Industrial Realty Trust
FR
$8.83B
– –
-8,153
Closed -$200K
FRO icon
5990
Frontline
FRO
$8.67B
– –
-1,391
Closed -$11.4K
FSLR icon
5991
First Solar
FSLR
$21.7B
– –
-5,101
Closed -$272K
FTCS icon
5992
CALL
First Trust Capital Strength ETF
FTCS
$7.89B
– –
-34
Closed -$5K
FTCS icon
5993
PUT
First Trust Capital Strength ETF
FTCS
$7.89B
– –
-293
Closed -$113K
FTEK icon
5994
Fuel Tech
FTEK
$46.7M
– –
-1,536
Closed -$2K
FTK icon
5995
PUT
Flotek Industries
FTK
$899M
– –
-27
Closed -$47K
FTNT icon
5996
Fortinet
FTNT
$113B
– –
-13,210
Closed -$85.5K
FUL icon
5997
CALL
H.B. Fuller
FUL
$3.02B
– –
-25
Closed -$1K
FULT icon
5998
CALL
Fulton Financial
FULT
$4.7B
– –
-41
Closed -$4K
FUN icon
5999
Cedar Fair
FUN
$1.79B
– –
-1,050
Closed -$61.4K
FUN icon
6000
PUT
Cedar Fair
FUN
$1.79B
– –
-77
Closed -$5K
238 239
240
241 242

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Simplex Trading's Q2 2016 Portfolio in Review

As of Q2 2016, Simplex Trading held 7,153 positions worth $1.5B, up 19% from $1.25B the previous quarter. Its ten largest holdings account for 19% of the portfolio.

Simplex Trading deployed $178M of net new capital in Q2 2016, opening 1,586 new positions and adding to 2,321 existing holdings. Its largest new stake was Biogen: 56,467 shares worth $13.7M.

By sector, the portfolio is most concentrated in Communication Services at 6.6% of assets, down from 6.9% a quarter earlier, followed by Healthcare and Technology.

On the sell side, the largest reduction was Broadcom, an estimated $36.7M trimmed.

  • Simplex Trading's largest Q2 2016 buy was Biogen: 56,467 shares worth $13.7M.
  • Simplex Trading added most to LinkedIn Corporation in Q2 2016, an estimated $21.4M increase.
  • Simplex Trading's biggest Q2 2016 reduction was Broadcom, cutting an estimated $36.7M.
  • Simplex Trading fully exited Alphabet (Google) Class C in Q2 2016, selling an estimated $20.1M.
  • Simplex Trading's ten largest holdings make up 19% of its $1.5B portfolio in Q2 2016.
  • Simplex Trading opened 1,586 new positions and closed 1,363 in Q2 2016.
  • Simplex Trading's portfolio value rose 19% quarter-over-quarter to $1.5B.

Based on Simplex Trading's 13F filing for Q2 2016, filed 18 Jul 2016.