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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
CUK
4601
PUT
DELISTED
Carnival PLC
CUK
$3K ﹤0.01%
9
– –
CWB icon
4602
State Street SPDR Bloomberg Convertible Securities ETF
CWB
$5.58B
$3K ﹤0.01%
86
-219
-72% -$9.5K
CYTK icon
4603
Cytokinetics
CYTK
$10.9B
$3K ﹤0.01%
328
-1,729
-84% -$14.2K
DBI icon
4604
CALL
Designer Brands
DBI
$314M
$3K ﹤0.01%
90
-20
-18% -$460
DHT icon
4605
CALL
DHT Holdings
DHT
$2.99B
$3K ﹤0.01%
+284
New +$1.57K
DORM icon
4606
CALL
Dorman Products
DORM
$3.98B
$3K ﹤0.01%
+11
New +$591
DVA icon
4607
PUT
DaVita
DVA
$15.3B
$3K ﹤0.01%
57
+28
+97% +$2.12K
ECPG icon
4608
CALL
Encore Capital Group
ECPG
$2.02B
$3K ﹤0.01%
55
+16
+41% +$411
EG icon
4609
CALL
Everest Group
EG
$14.9B
$3K ﹤0.01%
4
-2
-33% -$368
EG icon
4610
PUT
Everest Group
EG
$14.9B
$3K ﹤0.01%
19
-2
-10% -$368
EIX icon
4611
PUT
Edison International
EIX
$30.3B
$3K ﹤0.01%
96
-43
-31% -$3.09K
ENR icon
4612
PUT
Energizer
ENR
$1.44B
$3K ﹤0.01%
+15
New +$686
EQR icon
4613
CALL
Equity Residential
EQR
$25.2B
$3K ﹤0.01%
35
-21
-38% -$1.45K
EQR icon
4614
PUT
Equity Residential
EQR
$25.2B
$3K ﹤0.01%
88
+24
+38% +$1.65K
ERIC icon
4615
PUT
Ericsson
ERIC
$32.1B
$3K ﹤0.01%
+72
New +$590
ERII icon
4616
CALL
Energy Recovery
ERII
$435M
$3K ﹤0.01%
29
-54
-65% -$576
EMBJ
4617
PUT
Embraer S.A. ADS
EMBJ
$12.1B
$3K ﹤0.01%
+23
New +$517
EXC icon
4618
PUT
Exelon
EXC
$46.6B
$3K ﹤0.01%
80
-702
-90% -$17.4K
EXEL icon
4619
PUT
Exelixis
EXEL
$14.1B
$3K ﹤0.01%
141
+21
+18% +$121
FBP icon
4620
CALL
First Bancorp
FBP
$4.4B
$3K ﹤0.01%
+87
New +$327
FCN icon
4621
CALL
FTI Consulting
FCN
$4.95B
$3K ﹤0.01%
+34
New +$1.34K
FITB
4622
CALL
Fifth Third Bancorp
FITB
$51.3B
$3K ﹤0.01%
112
-554
-83% -$9.94K
FIVE icon
4623
PUT
Five Below
FIVE
$12.1B
$3K ﹤0.01%
15
-98
-87% -$4.1K
FLEX icon
4624
PUT
Flex
FLEX
$41B
$3K ﹤0.01%
+82
New +$764
FSS icon
4625
CALL
Federal Signal
FSS
$7.6B
$3K ﹤0.01%
46
-10
-18% -$131
183 184
185
186 187

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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.