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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
GNRC icon
6026
PUT
Generac Holdings
GNRC
$11.8B
– –
-7
Closed -$1K
GOGL
6027
DELISTED
Golden Ocean Group
GOGL
– –
-13
Closed -$49
GOOG icon
6028
Alphabet (Google) Class C
GOOG
$4.03T
– –
-539,920
Closed -$20.1M
GORO icon
6029
Goldgroup Mining Inc.
GORO
$154M
– –
-348
Closed -$1.1K
GPC icon
6030
Genuine Parts
GPC
$17.7B
– –
-1,543
Closed -$150K
GPC icon
6031
PUT
Genuine Parts
GPC
$17.7B
– –
-48
Closed -$1K
GPK icon
6032
CALL
Graphic Packaging
GPK
$3.29B
– –
-65
Closed -$5K
GPRO icon
6033
GoPro
GPRO
$119M
– –
-138,107
Closed -$1.53M
GSK icon
6034
GSK
GSK
$105B
– –
-13,580
Closed -$715K
GSL icon
6035
Global Ship Lease
GSL
$1.56B
– –
-2,110
Closed -$19K
GSL icon
6036
PUT
Global Ship Lease
GSL
$1.56B
– –
-23
Closed -$24K
GSM icon
6037
PUT
FerroAtlántica
GSM
$619M
– –
-91
Closed -$33K
GTE icon
6038
PUT
Gran Tierra Energy
GTE
$243M
– –
-5
Closed -$1K
GURE
6039
CALL
Gulf Resources
GURE
$5.28M
– –
-5
Closed -$2K
GURE
6040
Gulf Resources
GURE
$5.28M
$0 ﹤0.01%
2
– –
GVA icon
6041
CALL
Granite Construction
GVA
$5.48B
– –
-35
Closed -$10K
HDB icon
6042
PUT
HDFC Bank
HDB
$119B
– –
-200
Closed -$2K
HDGE icon
6043
AdvisorShares Ranger Equity Bear ETF
HDGE
$61.7M
– –
-635
Closed -$67K
HE icon
6044
Hawaiian Electric Industries
HE
$2.32B
– –
-1,075
Closed -$35.4K
HEES
6045
DELISTED
H&E Equipment Services
HEES
– –
-5,749
Closed -$108K
HI
6046
CALL
DELISTED
Hillenbrand
HI
– –
-26
Closed -$1K
HII icon
6047
Huntington Ingalls Industries
HII
$11.2B
– –
-452
Closed -$68.7K
HIW icon
6048
PUT
Highwoods Properties
HIW
$3.73B
– –
-53
Closed -$2K
HL icon
6049
Hecla Mining
HL
$10.1B
– –
-54,126
Closed -$219K
HLIT icon
6050
Harmonic Inc
HLIT
$1.2B
– –
-40
Closed –
240 241
242
243 244

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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.