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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
CACC icon
5826
CALL
Credit Acceptance
CACC
$5.78B
– –
-6
Closed -$39K
CAF
5827
Morgan Stanley China A Share Fund
CAF
$337M
– –
-250
Closed -$4K
CAF
5828
PUT
Morgan Stanley China A Share Fund
CAF
$337M
– –
-20
Closed -$1K
CAKE icon
5829
CALL
Cheesecake Factory
CAKE
$4.32B
– –
-15
Closed -$3K
CAKE icon
5830
Cheesecake Factory
CAKE
$4.32B
– –
-2,497
Closed -$126K
CALM icon
5831
Cal-Maine
CALM
$4.2B
– –
-3,588
Closed -$169K
CASY icon
5832
Casey's General Stores
CASY
$31.6B
– –
-1,373
Closed -$159K
CBRE icon
5833
PUT
CBRE Group
CBRE
$42.1B
– –
-34
Closed -$1K
CCK icon
5834
CALL
Crown Holdings
CCK
$12.9B
– –
-53
Closed -$3K
CDE icon
5835
Coeur Mining
CDE
$15.8B
– –
-25,088
Closed -$197K
CE icon
5836
Celanese
CE
$4.87B
– –
-2,286
Closed -$159K
CEVA icon
5837
CEVA Inc
CEVA
$980M
– –
-5,319
Closed -$119K
CFG icon
5838
CALL
Citizens Financial Group
CFG
$30.1B
– –
-416
Closed -$40K
CG icon
5839
CALL
Carlyle Group
CG
$16.7B
– –
-150
Closed -$9K
CGEN icon
5840
CALL
Compugen
CGEN
$225M
– –
-9
Closed -$1K
CGEN icon
5841
Compugen
CGEN
$225M
$0 ﹤0.01%
41
-148
-78% -$988
CGNX icon
5842
Cognex
CGNX
$10.2B
– –
-300
Closed -$6.05K
CHDN icon
5843
CALL
Churchill Downs
CHDN
$6.15B
– –
-12
Closed -$1K
CHEF icon
5844
CALL
Chefs' Warehouse
CHEF
$3.9B
– –
-7
Closed -$2K
CHEF icon
5845
Chefs' Warehouse
CHEF
$3.9B
$0 ﹤0.01%
+21
New +$358
CHEF icon
5846
PUT
Chefs' Warehouse
CHEF
$3.9B
– –
-7
Closed -$1K
CHH icon
5847
Choice Hotels
CHH
$5.15B
– –
-272
Closed -$13.2K
CI icon
5848
Cigna
CI
$77B
– –
-1,507
Closed -$199K
CIA icon
5849
Citizens
CIA
$248M
– –
-6,883
Closed -$53.3K
CIA icon
5850
PUT
Citizens
CIA
$248M
– –
-131
Closed -$9K
232 233
234
235 236

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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.