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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
-0.41%
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
$1.25B
AUM Growth
-$22.5M
Cap. Flow
-$16M
Cap. Flow %
-1.28%
Top 10 Hldgs %
17.26%
Holding
7,084
New
1,678
Increased
2,214
Reduced
1,528
Closed
1,505

Top Buys

Rank Stock Value
1
AVGO icon
Broadcom
AVGO
+$33.7M
2
GLD icon
SPDR Gold Trust
GLD
+$17.8M
3
EEM icon
iShares MSCI Emerging Markets ETF
EEM
+$14.3M
4
MDY icon
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
+$11.9M
5
C icon
Citigroup
C
+$8.7M

Top Sells

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$34.2M
2
GMCR
KEURIG GREEN MTN INC
GMCR
+$17.9M
3
CMG icon
Chipotle Mexican Grill
CMG
+$14.7M
4
DIS icon
Walt Disney
DIS
+$13.3M
5
BKNG icon
Booking.com
BKNG
+$12.1M

Sector Composition

Rank Sector Weight
1 Technology 7.64%
2 Communication Services 6.85%
3 Consumer Discretionary 4.92%
4 Healthcare 4.57%
5 Financials 4.22%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
WCC
4826
PUT
WESCO International
WCC
$16.5B
$2K ﹤0.01%
124
+120
+3,000% +$5.33K
WEX icon
4827
CALL
WEX
WEX
$6.17B
$2K ﹤0.01%
+5
New +$361
WIT icon
4828
CALL
Wipro
WIT
$18.9B
$2K ﹤0.01%
+475
New +$1.04K
WKC icon
4829
PUT
World Kinect Corp
WKC
$2.04B
$2K ﹤0.01%
11
+7
+175% +$300
WNC icon
4830
PUT
Wabash National
WNC
$538M
$2K ﹤0.01%
+267
New +$3.12K
WPP icon
4831
PUT
WPP
WPP
$4.21B
$2K ﹤0.01%
+20
New +$2.16K
WSO icon
4832
PUT
Watsco Inc
WSO
$15B
$2K ﹤0.01%
+18
New +$2.18K
WTI icon
4833
CALL
W&T Offshore
WTI
$492M
$2K ﹤0.01%
+263
New +$534
WU icon
4834
PUT
Western Union
WU
$2.55B
$2K ﹤0.01%
+82
New +$1.48K
XOMA
4835
DELISTED
Xoma
XOMA
$2K ﹤0.01%
170
-160
-48% -$2.88K
XSD icon
4836
State Street SPDR S&P Semiconductor ETF
XSD
$2.75B
$2K ﹤0.01%
+53
New +$2.18K
TRAW icon
4837
PUT
Traws Pharma
TRAW
$7.92M
– –
0
– –
SGI
4838
PUT
Somnigroup International
SGI
$15.3B
$2K ﹤0.01%
72
+20
+38% +$296
QVCGA
4839
CALL
DELISTED
QVC Group Inc Series A
QVCGA
$2K ﹤0.01%
1
-3
-75% -$3.65K
TVRD
4840
PUT
Tvardi Therapeutics
TVRD
$23.8M
$2K ﹤0.01%
+3
New +$896
VIVS
4841
CALL
VivoSim Labs
VIVS
$1.36M
– –
-1
Closed -$508
TPC
4842
PUT
Tutor Perini Cor
TPC
$4.51B
$2K ﹤0.01%
38
+30
+375% +$416
B
4843
CALL
DELISTED
Barnes Group Inc.
B
$2K ﹤0.01%
+24
New +$795
VTNR
4844
DELISTED
Vertex Energy, Inc
VTNR
$2K ﹤0.01%
1,292
+1,235
+2,167% +$1.83K
TUP
4845
CALL
DELISTED
Tupperware Brands Corporation
TUP
$2K ﹤0.01%
8
-10
-56% -$516
BIG
4846
CALL
DELISTED
Big Lots, Inc.
BIG
$2K ﹤0.01%
+4
New +$160
IMGN
4847
CALL
DELISTED
Immunogen Inc
IMGN
$2K ﹤0.01%
+28
New +$237
AAIC
4848
PUT
DELISTED
Arlington Asset Investment Corp.
AAIC
$2K ﹤0.01%
32
+6
+23% +$72
HT
4849
DELISTED
Hersha Hospitality Trust Priority Class A Common Shares of Beneficial Interest
HT
$2K ﹤0.01%
+127
New +$2.49K
ACOR
4850
CALL
DELISTED
Acorda Therapeutics
ACOR
– –
0
– –
192 193
194
195 196

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Simplex Trading's Q1 2016 Portfolio in Review

As of Q1 2016, Simplex Trading held 7,084 positions worth $1.25B, down 1.8% from $1.28B the previous quarter. Its ten largest holdings account for 17% of the portfolio.

Simplex Trading's Q1 2016 filing shows 1,678 new, 2,214 increased, 1,528 reduced and 1,505 closed positions. Its largest new stake was Broadcom: 2,493,400 shares worth $38.5M. The largest sale was Apple, an estimated $34.2M.

By sector, the portfolio is most concentrated in Technology at 7.6% of assets, up from 7% a quarter earlier, followed by Communication Services and Consumer Discretionary.

  • Simplex Trading's largest Q1 2016 buy was Broadcom: 2,493,400 shares worth $38.5M.
  • Simplex Trading added most to Citigroup in Q1 2016, an estimated $8.7M increase.
  • Simplex Trading's biggest Q1 2016 reduction was Booking.com, cutting an estimated $12.1M.
  • Simplex Trading fully exited Apple in Q1 2016, selling an estimated $34.2M.
  • Simplex Trading's ten largest holdings make up 17% of its $1.25B portfolio in Q1 2016.
  • Simplex Trading opened 1,678 new positions and closed 1,505 in Q1 2016.
  • Simplex Trading's portfolio value fell 1.8% quarter-over-quarter to $1.25B.

Based on Simplex Trading's 13F filing for Q1 2016, filed 14 Apr 2016.