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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
AEG icon
5726
Aegon
AEG
$13.5B
– –
-1,119
Closed -$4.21K
AFG icon
5727
American Financial Group
AFG
$12B
– –
-210
Closed -$14.9K
AGCO icon
5728
AGCO
AGCO
$8.71B
– –
-4,618
Closed -$237K
AGEN
5729
CALL
Agenus
AGEN
$255M
– –
-8
Closed -$8K
AGM.A icon
5730
CALL
Federal Agricultural Mortgage Class A
AGM.A
$1.62B
– –
-6
Closed -$1K
AGO icon
5731
Assured Guaranty
AGO
$3.78B
– –
-1,456
Closed -$37.5K
AHT
5732
CALL
Ashford Hospitality Trust
AHT
$20.9M
– –
0
– -$2K
AIV
5733
CALL
Aimco
AIV
$377M
– –
-45
Closed -$1K
AKAM icon
5734
Akamai
AKAM
$16.4B
– –
-374
Closed -$19.7K
AL
5735
CALL
DELISTED
Air Lease Corp
AL
– –
-32
Closed -$7K
ALE
5736
DELISTED
Allete
ALE
– –
-66
Closed -$3.81K
ALGN icon
5737
PUT
Align Technology
ALGN
$12B
– –
-89
Closed -$5K
ALTO icon
5738
PUT
Alto Ingredients
ALTO
$349M
– –
-37
Closed -$1K
OSG
5739
Octave Specialty Group
OSG
$258M
– –
-650
Closed -$10K
AMCX icon
5740
CALL
AMC Global Media
AMCX
$445M
– –
-71
Closed -$2K
AMCX icon
5741
AMC Global Media
AMCX
$445M
– –
-100
Closed -$6.36K
AMD icon
5742
Advanced Micro Devices
AMD
$807B
– –
-34,437
Closed -$134K
AMKR icon
5743
Amkor Technology
AMKR
$15B
– –
-498
Closed -$2.91K
AMKR icon
5744
PUT
Amkor Technology
AMKR
$15B
– –
-12
Closed -$1K
AMLP icon
5745
Alerian MLP ETF
AMLP
$12.7B
– –
-3,256
Closed -$177K
AMRN
5746
Amarin Corp
AMRN
$290M
– –
-1,010
Closed -$38K
AMWD
5747
CALL
DELISTED
American Woodmark
AMWD
– –
-9
Closed -$2K
AN icon
5748
AutoNation
AN
$7.1B
– –
-1,773
Closed -$85.1K
ANGI icon
5749
Angi Inc
ANGI
$240M
– –
-315
Closed -$26K
ANIK icon
5750
Anika Therapeutics
ANIK
$200M
– –
-211
Closed -$9.94K
228 229
230
231 232

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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.