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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
LJPC
5701
CALL
DELISTED
La Jolla Pharmaceutical Company
LJPC
$1K ﹤0.01%
+8
New +$144
LJPC
5702
PUT
DELISTED
La Jolla Pharmaceutical Company
LJPC
$1K ﹤0.01%
+8
New +$144
CZR
5703
CALL
DELISTED
Caesars Entertainment Corporation
CZR
$1K ﹤0.01%
+20
New +$148
RESI
5704
CALL
DELISTED
Front Yard Residential Corporation Common Stock
RESI
$1K ﹤0.01%
49
+24
+96% +$254
RPRX
5705
CALL
DELISTED
Repros Therapeutics Inc.
RPRX
$1K ﹤0.01%
+160
New +$307
RPRX
5706
PUT
DELISTED
Repros Therapeutics Inc.
RPRX
$1K ﹤0.01%
34
+21
+162% +$40
AM
5707
PUT
DELISTED
ANTERO MIDSTREAM PARTNERS LP
AM
$1K ﹤0.01%
39
– –
AA icon
5708
Alcoa
AA
$11.6B
– –
-3,390
Closed -$79.3K
AAL icon
5709
American Airlines Group
AAL
$9.9B
– –
-52,163
Closed -$1.76M
AAON icon
5710
CALL
Aaon
AAON
$8.27B
– –
-30
Closed -$1K
ABBV icon
5711
AbbVie
ABBV
$454B
– –
-9,340
Closed -$569K
ABEO icon
5712
Abeona Therapeutics
ABEO
$349M
– –
-8
Closed -$547
ABEV icon
5713
Ambev
ABEV
$47.4B
– –
-2,364
Closed -$12.7K
ABG icon
5714
Asbury Automotive
ABG
$4.22B
– –
-537
Closed -$30.1K
ABG icon
5715
PUT
Asbury Automotive
ABG
$4.22B
– –
-23
Closed -$1K
ABR icon
5716
Arbor Realty Trust
ABR
$977M
– –
-538
Closed -$3.68K
ACGL icon
5717
CALL
Arch Capital
ACGL
$36.3B
– –
-114
Closed -$3K
ACHV icon
5718
Achieve Life Sciences
ACHV
$634M
– –
-4
Closed -$6K
ACHV icon
5719
PUT
Achieve Life Sciences
ACHV
$634M
– –
0
– -$25K
ACIW icon
5720
CALL
ACI Worldwide
ACIW
$5.88B
– –
-3
Closed -$5K
ACLS icon
5721
Axcelis
ACLS
$3.94B
– –
-284
Closed -$3K
ACTG icon
5722
Acacia Research
ACTG
$447M
– –
-205
Closed -$943
ADEA icon
5723
Adeia
ADEA
$2.88B
– –
-1,682
Closed -$13.7K
ADSK icon
5724
Autodesk
ADSK
$47.7B
– –
-17,905
Closed -$1.04M
ADTN icon
5725
CALL
Adtran
ADTN
$769M
– –
-44
Closed -$3K
227 228
229
230 231

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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.