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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
CDW icon
4876
PUT
CDW
CDW
$18.9B
$2K ﹤0.01%
+116
New +$4.81K
CHRS icon
4877
PUT
Coherus Oncology
CHRS
$217M
$2K ﹤0.01%
+11
New +$206
CIA icon
4878
CALL
Citizens
CIA
$248M
$2K ﹤0.01%
+31
New +$240
CINF icon
4879
PUT
Cincinnati Financial
CINF
$27.8B
$2K ﹤0.01%
22
+2
+10% +$136
CM icon
4880
CALL
Canadian Imperial Bank of Commerce
CM
$106B
$2K ﹤0.01%
44
-192
-81% -$7.49K
CMP icon
4881
CALL
Compass Minerals
CMP
$1.23B
$2K ﹤0.01%
20
-9
-31% -$682
CMP icon
4882
PUT
Compass Minerals
CMP
$1.23B
$2K ﹤0.01%
+22
New +$1.67K
CMRE icon
4883
CALL
Costamare
CMRE
$1.85B
$2K ﹤0.01%
110
-219
-67% -$2.07K
CMS icon
4884
CALL
CMS Energy
CMS
$23B
$2K ﹤0.01%
8
-36
-82% -$1.51K
CNK icon
4885
CALL
Cinemark Holdings
CNK
$4.07B
$2K ﹤0.01%
15
-29
-66% -$1.01K
CNO icon
4886
PUT
CNO Financial Group
CNO
$4.94B
$2K ﹤0.01%
+15
New +$282
COHU icon
4887
Cohu
COHU
$1.86B
$2K ﹤0.01%
+240
New +$2.76K
CPSS icon
4888
PUT
Consumer Portfolio Services
CPSS
$209M
$2K ﹤0.01%
+16
New +$63
CRH icon
4889
CALL
CRH
CRH
$66.6B
$2K ﹤0.01%
+19
New +$556
CRI icon
4890
CALL
Carter's
CRI
$1.43B
$2K ﹤0.01%
41
-149
-78% -$15.4K
CROX icon
4891
CALL
Crocs
CROX
$6.63B
$2K ﹤0.01%
17
-31
-65% -$301
CSTE icon
4892
CALL
Caesarstone
CSTE
$69.5M
$2K ﹤0.01%
62
-74
-54% -$2.74K
CSV icon
4893
Carriage Services
CSV
$647M
$2K ﹤0.01%
+88
New +$2.02K
CTSO icon
4894
CALL
Cytosorbents Corp
CTSO
$22.2M
$2K ﹤0.01%
41
-14
-25% -$61
CUBE icon
4895
CALL
CubeSmart
CUBE
$9.61B
$2K ﹤0.01%
17
-4
-19% -$125
CVE icon
4896
PUT
Cenovus Energy
CVE
$54.2B
$2K ﹤0.01%
7
-19
-73% -$275
DCOM icon
4897
CALL
Dime Commercial Bancshares
DCOM
$1.79B
$2K ﹤0.01%
+8
New +$238
DENN
4898
PUT
DELISTED
Denny's
DENN
$2K ﹤0.01%
+103
New +$1.09K
DK icon
4899
CALL
Delek US
DK
$3.98B
$2K ﹤0.01%
+40
New +$569
DQ
4900
CALL
Daqo New Energy
DQ
$810M
$2K ﹤0.01%
35
+10
+40% +$47
194 195
196
197 198

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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.