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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
ARCB icon
4851
PUT
ArcBest
ARCB
$3.17B
$2K ﹤0.01%
+55
New +$996
AROC icon
4852
CALL
Archrock
AROC
$6.2B
$2K ﹤0.01%
+26
New +$205
ARWR icon
4853
PUT
Arrowhead Research
ARWR
$12.2B
$2K ﹤0.01%
25
-27
-52% -$154
ARW icon
4854
CALL
Arrow Electronics
ARW
$10.6B
$2K ﹤0.01%
12
-1
-8% -$63
ASPS icon
4855
PUT
Altisource Portfolio Solutions
ASPS
$57.7M
$2K ﹤0.01%
3
-4
-57% -$886
ASTE icon
4856
CALL
Astec Industries
ASTE
$1.19B
$2K ﹤0.01%
14
-30
-68% -$1.52K
ATEN icon
4857
CALL
A10 Networks
ATEN
$2.11B
$2K ﹤0.01%
+52
New +$329
AXDX
4858
PUT
DELISTED
Accelerate Diagnostics
AXDX
$2K ﹤0.01%
+1
New +$134
AXTI icon
4859
CALL
AXT Inc
AXTI
$2.55B
$2K ﹤0.01%
+19
New +$58
AZZ icon
4860
AZZ Inc
AZZ
$4.29B
$2K ﹤0.01%
+49
New +$2.8K
AZZ icon
4861
PUT
AZZ Inc
AZZ
$4.29B
$2K ﹤0.01%
+22
New +$1.26K
BEN icon
4862
CALL
Franklin Resources
BEN
$16.9B
$2K ﹤0.01%
+19
New +$690
BGFV
4863
PUT
DELISTED
Big 5 Sporting Goods
BGFV
$2K ﹤0.01%
35
-101
-74% -$988
BMA icon
4864
PUT
Banco Macro
BMA
$5.85B
$2K ﹤0.01%
41
+13
+46% +$855
BRFS
4865
PUT
DELISTED
BRF SA
BRFS
$2K ﹤0.01%
132
+92
+230% +$1.24K
BURL icon
4866
PUT
Burlington
BURL
$23.5B
$2K ﹤0.01%
10
-64
-86% -$3.76K
BBBY
4867
PUT
Bed Bath & Beyond
BBBY
$477M
$2K ﹤0.01%
20
+7
+54% +$83
BZH icon
4868
CALL
Beazer Homes USA
BZH
$893M
$2K ﹤0.01%
28
-27
-49% -$219
CACI icon
4869
CALL
CACI
CACI
$10.8B
$2K ﹤0.01%
9
-48
-84% -$4.77K
CALX icon
4870
PUT
Calix
CALX
$2.26B
$2K ﹤0.01%
34
+19
+127% +$130
CASY icon
4871
PUT
Casey's General Stores
CASY
$32.3B
$2K ﹤0.01%
70
+6
+9% +$697
CBOE icon
4872
PUT
Cboe Global Markets
CBOE
$32.2B
$2K ﹤0.01%
66
-43
-39% -$2.76K
CBRL icon
4873
PUT
Cracker Barrel
CBRL
$1.25B
$2K ﹤0.01%
39
+30
+333% +$4.68K
CDNS icon
4874
PUT
Cadence Design Systems
CDNS
$94.1B
$2K ﹤0.01%
+75
New +$1.8K
CDP icon
4875
COPT Defense Properties
CDP
$4.32B
$2K ﹤0.01%
81
-1,809
-96% -$48.6K
193 194
195
196 197

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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.