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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
JBL icon
3926
PUT
Jabil
JBL
$30.1B
$6K ﹤0.01%
51
-77
-60% -$1.55K
JDST icon
3927
Direxion Daily Junior Gold Miners Index Bear 2X ETF
JDST
$32.2M
– –
0
– –
JJSF icon
3928
PUT
J&J Snack Foods
JJSF
$1.49B
$6K ﹤0.01%
+19
New +$2.05K
JLL icon
3929
CALL
Jones Lang LaSalle
JLL
$15.8B
$6K ﹤0.01%
+7
New +$848
LII icon
3930
CALL
Lennox International
LII
$15B
$6K ﹤0.01%
27
+16
+145% +$1.98K
LRMR icon
3931
PUT
Larimar Therapeutics
LRMR
$377M
$6K ﹤0.01%
6
-2
-25% -$158
MANH icon
3932
PUT
Manhattan Associates
MANH
$12.1B
$6K ﹤0.01%
10
+6
+150% +$334
MASI
3933
CALL
DELISTED
Masimo
MASI
$6K ﹤0.01%
+20
New +$752
MAT icon
3934
PUT
Mattel
MAT
$4.47B
$6K ﹤0.01%
86
-615
-88% -$18.7K
MDU icon
3935
PUT
MDU Resources
MDU
$4.18B
$6K ﹤0.01%
+171
New +$1.15K
MORN icon
3936
Morningstar
MORN
$7.55B
$6K ﹤0.01%
71
-29
-29% -$2.31K
MSB
3937
PUT
Mesabi Trust
MSB
$296M
$6K ﹤0.01%
127
-52
-29% -$254
OMER icon
3938
PUT
Omeros
OMER
$845M
$6K ﹤0.01%
43
-100
-70% -$1.22K
PBI icon
3939
CALL
Pitney Bowes
PBI
$2.39B
$6K ﹤0.01%
31
-39
-56% -$741
PDS
3940
Precision Drilling
PDS
$946M
$6K ﹤0.01%
81
+65
+406% +$4.64K
PERI icon
3941
Perion Network
PERI
$380M
$6K ﹤0.01%
1,064
-1,813
-63% -$12.7K
PETS icon
3942
CALL
PetMed Express
PETS
$42.3M
$6K ﹤0.01%
104
+24
+30% +$411
PGF icon
3943
Invesco Financial Preferred ETF
PGF
$674M
$6K ﹤0.01%
+336
New +$6.22K
PHM icon
3944
PUT
Pultegroup
PHM
$25.2B
$6K ﹤0.01%
214
-179
-46% -$3.05K
PLUG icon
3945
PUT
Plug Power
PLUG
$2.65B
$6K ﹤0.01%
42
-312
-88% -$586
PSHG icon
3946
PUT
Performance Shipping
PSHG
$23.5M
– –
0
– –
PTEN icon
3947
PUT
Patterson-UTI
PTEN
$3.54B
$6K ﹤0.01%
71
+57
+407% +$850
QURE icon
3948
PUT
uniQure
QURE
$2.75B
$6K ﹤0.01%
23
-28
-55% -$413
RYN icon
3949
CALL
Rayonier
RYN
$6.67B
$6K ﹤0.01%
65
+41
+171% +$799
SA
3950
Seabridge Gold
SA
$2.72B
$6K ﹤0.01%
+577
New +$5.04K
156 157
158
159 160

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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.