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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
FULT icon
4626
PUT
Fulton Financial
FULT
$4.68B
$3K ﹤0.01%
+62
New +$849
G icon
4627
Genpact
G
$6.22B
$3K ﹤0.01%
+132
New +$3.63K
GDOT icon
4628
CALL
Green Dot
GDOT
$750M
$3K ﹤0.01%
32
-142
-82% -$3.16K
GDOT icon
4629
PUT
Green Dot
GDOT
$750M
$3K ﹤0.01%
70
-2
-3% -$45
GEO icon
4630
PUT
The GEO Group
GEO
$4B
$3K ﹤0.01%
+102
New +$2.25K
GGB icon
4631
Gerdau
GGB
$9.54B
$3K ﹤0.01%
+2,209
New +$3.26K
GIB icon
4632
PUT
CGI
GIB
$15.6B
$3K ﹤0.01%
+2
New +$92
GLDD
4633
PUT
DELISTED
Great Lakes Dredge & Dock
GLDD
$3K ﹤0.01%
+49
New +$221
GLOB icon
4634
PUT
Globant
GLOB
$1.65B
$3K ﹤0.01%
+20
New +$733
GLPI icon
4635
PUT
Gaming and Leisure Properties
GLPI
$13B
$3K ﹤0.01%
+51
New +$1.69K
GMED icon
4636
CALL
Globus Medical
GMED
$11.1B
$3K ﹤0.01%
14
-51
-78% -$1.22K
GNTX icon
4637
CALL
Gentex
GNTX
$5.1B
$3K ﹤0.01%
70
+11
+19% +$175
GOEX icon
4638
Global X Gold Explorers ETF NEW
GOEX
$104M
$3K ﹤0.01%
+85
New +$2.79K
HCI icon
4639
PUT
HCI Group
HCI
$2.34B
$3K ﹤0.01%
190
+41
+28% +$1.26K
HRTX icon
4640
CALL
Heron Therapeutics
HRTX
$93.4M
$3K ﹤0.01%
44
-283
-87% -$5.53K
HZO icon
4641
CALL
MarineMax
HZO
$748M
$3K ﹤0.01%
118
+8
+7% +$140
IBOC icon
4642
International Bancshares
IBOC
$4.77B
$3K ﹤0.01%
+147
New +$3.85K
IMMR icon
4643
CALL
Immersion
IMMR
$243M
$3K ﹤0.01%
123
-31
-20% -$218
INSG icon
4644
Inseego
INSG
$104M
$3K ﹤0.01%
207
+10
+5% +$153
IT icon
4645
PUT
Gartner
IT
$11.1B
$3K ﹤0.01%
+117
New +$11.1K
JBHT icon
4646
PUT
JB Hunt Transport Services
JBHT
$25.9B
$3K ﹤0.01%
19
-165
-90% -$13.6K
JLL icon
4647
CALL
Jones Lang LaSalle
JLL
$15.8B
$3K ﹤0.01%
28
+21
+300% +$2.41K
KLIC icon
4648
CALL
Kulicke & Soffa
KLIC
$4.34B
$3K ﹤0.01%
70
+16
+30% +$186
KOP icon
4649
CALL
Koppers
KOP
$946M
$3K ﹤0.01%
13
– –
LPL icon
4650
CALL
LG Display
LPL
$2.79B
$3K ﹤0.01%
21
+2
+11% +$22
184 185
186
187 188

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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.