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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
EDZ icon
5926
Direxion Daily MSCI Emerging Markets Bear 3X ETF
EDZ
$19.6M
– –
-128
Closed -$223K
EEM icon
5927
iShares MSCI Emerging Markets ETF
EEM
$28.3B
– –
-460,204
Closed -$15.8M
ELV icon
5928
Elevance Health
ELV
$82B
– –
-7,876
Closed -$1.08M
EMR icon
5929
Emerson Electric
EMR
$82.7B
– –
-20,655
Closed -$1.1M
ENB icon
5930
PUT
Enbridge
ENB
$121B
– –
-46
Closed -$1K
ENOV icon
5931
CALL
Enovis
ENOV
$1.6B
– –
-25
Closed -$17K
ENPH icon
5932
CALL
Enphase Energy
ENPH
$4.85B
– –
-74
Closed -$2K
ENTA icon
5933
Enanta Pharmaceuticals
ENTA
$377M
– –
-172
Closed -$4.5K
ENTA icon
5934
PUT
Enanta Pharmaceuticals
ENTA
$377M
– –
-40
Closed -$2K
ENSG icon
5935
The Ensign Group
ENSG
$10.5B
– –
-592
Closed -$12K
EOG icon
5936
EOG Resources
EOG
$75.6B
– –
-1,154
Closed -$92.4K
EPAC icon
5937
Enerpac Tool Group
EPAC
$1.78B
– –
-2,660
Closed -$68.3K
EPR icon
5938
PUT
EPR Properties
EPR
$4.89B
– –
-189
Closed -$3K
EPV icon
5939
ProShares UltraShort FTSE Europe
EPV
$11.5M
– –
-1,369
Closed -$403K
EQT icon
5940
EQT Corp
EQT
$33B
– –
-4,247
Closed -$165K
ERIC icon
5941
Ericsson
ERIC
$31.5B
– –
-1,214
Closed -$9.95K
ERII icon
5942
Energy Recovery
ERII
$432M
– –
-390
Closed -$4.16K
ERII icon
5943
PUT
Energy Recovery
ERII
$432M
– –
-57
Closed -$1K
EMBJ
5944
CALL
Embraer S.A. ADS
EMBJ
$12.1B
– –
-39
Closed -$1K
ERY icon
5945
Direxion Daily Energy Bear 2X ETF
ERY
$40.3M
– –
-25
Closed -$27K
ESPR
5946
CALL
DELISTED
Esperion Therapeutics
ESPR
– –
-38
Closed -$4K
ETD icon
5947
Ethan Allen Interiors
ETD
$588M
$0 ﹤0.01%
19
-200
-91% -$6.46K
ETSY icon
5948
Etsy
ETSY
$7.89B
$0 ﹤0.01%
+25
New +$223
ETSY icon
5949
PUT
Etsy
ETSY
$7.89B
– –
-18
Closed -$8K
EVR icon
5950
Evercore
EVR
$13B
– –
-668
Closed -$33.3K
236 237
238
239 240

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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.