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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 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
DBVT
5051
CALL
DBV Technologies
DBVT
$807M
$1K ﹤0.01%
+1
New +$281
DGX icon
5052
PUT
Quest Diagnostics
DGX
$25.1B
$1K ﹤0.01%
21
+3
+17% +$201
DHT icon
5053
PUT
DHT Holdings
DHT
$2.97B
$1K ﹤0.01%
+15
New +$89
DIOD icon
5054
CALL
Diodes
DIOD
$4B
$1K ﹤0.01%
+27
New +$518
DLNG icon
5055
PUT
Dynagas LNG Partners
DLNG
$131M
$1K ﹤0.01%
30
+27
+900% +$244
DQ
5056
CALL
Daqo New Energy
DQ
$790M
$1K ﹤0.01%
25
+10
+67% +$33
DQ
5057
PUT
Daqo New Energy
DQ
$790M
$1K ﹤0.01%
+50
New +$164
DRV icon
5058
Direxion Daily Real Estate Bear 3X ETF
DRV
$25M
$1K ﹤0.01%
+2
New +$2.04K
DY icon
5059
CALL
Dycom Industries
DY
$12.9B
$1K ﹤0.01%
17
-50
-75% -$3.05K
DY icon
5060
PUT
Dycom Industries
DY
$12.9B
$1K ﹤0.01%
25
-204
-89% -$12.4K
EEFT icon
5061
PUT
Euronet Worldwide
EEFT
$3.02B
$1K ﹤0.01%
20
-25
-56% -$1.76K
EFOI icon
5062
Energy Focus
EFOI
$18.3M
$1K ﹤0.01%
+6
New +$2.12K
EFOI icon
5063
PUT
Energy Focus
EFOI
$18.3M
0
EFX icon
5064
PUT
Equifax
EFX
$20.3B
$1K ﹤0.01%
44
-85
-66% -$8.94K
EG icon
5065
PUT
Everest Group
EG
$15.2B
$1K ﹤0.01%
+21
New +$3.88K
EGO icon
5066
PUT
Eldorado Gold
EGO
$8.31B
$1K ﹤0.01%
7
+1
+17% +$14
ENB icon
5067
PUT
Enbridge
ENB
$124B
$1K ﹤0.01%
46
+44
+2,200% +$1.5K
ENVA icon
5068
CALL
Enova International
ENVA
$5.91B
$1K ﹤0.01%
+17
New +$102
EQR icon
5069
PUT
Equity Residential
EQR
$25.4B
$1K ﹤0.01%
64
+58
+967% +$4.34K
ERII icon
5070
PUT
Energy Recovery
ERII
$434M
$1K ﹤0.01%
+57
New +$415
EMBJ
5071
CALL
Embraer S.A. ADS
EMBJ
$11.6B
$1K ﹤0.01%
39
+7
+22% +$192
ESE icon
5072
ESCO Technologies
ESE
$8.49B
$1K ﹤0.01%
+31
New +$1.1K
ETSY icon
5073
CALL
Etsy
ETSY
$7.65B
$1K ﹤0.01%
38
+18
+90% +$144
EXC icon
5074
PUT
Exelon
EXC
$48.6B
$1K ﹤0.01%
782
+740
+1,762% +$16.6K
FAF icon
5075
CALL
First American
FAF
$7.67B
$1K ﹤0.01%
+9
New +$320

Similar funds

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.