We are live on ! Find out more
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
+6.87%
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
$2.45B
AUM Growth
+$147M
Cap. Flow
+$26.3M
Cap. Flow %
1.07%
Top 10 Hldgs %
23.61%
Holding
7,357
New
1,313
Increased
2,078
Reduced
2,339
Closed
1,500

Top Buys

Rank Stock Value
1
AMZN icon
Amazon
AMZN
+$45.9M
2
IWM icon
iShares Russell 2000 ETF
IWM
+$30.1M
3
TWX
Time Warner Inc
TWX
+$25.8M
4
BKNG icon
Booking.com
BKNG
+$22.5M
5
GOOG icon
Alphabet (Google) Class C
GOOG
+$17.7M

Top Sells

Rank Stock Value
1
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$43.6M
2
AMGN icon
Amgen
AMGN
+$33.2M
3
BIDU icon
Baidu
BIDU
+$19.3M
4
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$17.3M
5
MU icon
Micron Technology
MU
+$17.1M

Sector Composition

Rank Sector Weight
1 Consumer Discretionary 14.31%
2 Technology 13.17%
3 Communication Services 11.81%
4 Healthcare 4.06%
5 Financials 3.84%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
EA icon
6026
Electronic Arts
EA
$52.4B
– –
-8,186
Closed -$948K
EBAY icon
6027
eBay
EBAY
$48.6B
– –
-27,404
Closed -$996K
EBF icon
6028
CALL
Ennis
EBF
$546M
– –
-12
Closed -$1K
ECPG icon
6029
Encore Capital Group
ECPG
$1.94B
– –
-3,628
Closed -$147K
ECPG icon
6030
PUT
Encore Capital Group
ECPG
$1.94B
– –
-69
Closed -$4K
EET icon
6031
ProShares Ultra MSCI Emerging Markets
EET
$34.9M
$0 ﹤0.01%
+7
New +$565
EFOI icon
6032
Energy Focus
EFOI
$18.6M
$0 ﹤0.01%
10
-53
-84% -$4.06K
EFOI icon
6033
PUT
Energy Focus
EFOI
$18.6M
– –
-1
Closed -$5K
EFX icon
6034
Equifax
EFX
$20.2B
– –
-686
Closed -$90.7K
EG icon
6035
CALL
Everest Group
EG
$15.3B
– –
-8
Closed -$14K
EGO icon
6036
CALL
Eldorado Gold
EGO
$8.31B
– –
-68
Closed -$3K
EHTH icon
6037
PUT
eHealth
EHTH
$42.9M
– –
-190
Closed -$1K
EIG icon
6038
Employers Holdings
EIG
$909M
– –
-12
Closed –
EIX icon
6039
CALL
Edison International
EIX
$30.7B
– –
-13
Closed -$1K
ELME
6040
Elme Communities
ELME
$133M
– –
-2,021
Closed -$64K
ELV icon
6041
Elevance Health
ELV
$81.7B
– –
-162
Closed -$30.8K
ENB icon
6042
PUT
Enbridge
ENB
$124B
– –
-183
Closed -$12K
ENR icon
6043
Energizer
ENR
$1.43B
– –
-15,327
Closed -$690K
ENS icon
6044
EnerSys
ENS
$6.93B
– –
-794
Closed -$54.3K
ENS icon
6045
PUT
EnerSys
ENS
$6.93B
– –
-73
Closed -$17K
ENTA icon
6046
Enanta Pharmaceuticals
ENTA
$370M
– –
-4,953
Closed -$199K
ENTA icon
6047
PUT
Enanta Pharmaceuticals
ENTA
$370M
– –
-98
Closed -$4K
ENTG icon
6048
Entegris
ENTG
$19.6B
– –
-218
Closed -$5.54K
ENTG icon
6049
PUT
Entegris
ENTG
$19.6B
– –
-22
Closed -$3K
EPAC icon
6050
PUT
Enerpac Tool Group
EPAC
$1.77B
– –
-266
Closed -$21K
240 241
242
243 244

Similar funds

Mitsubishi UFJ Asset Management
Mitsubishi UFJ Asset Management Tokyo, Japan $149B AUM 24.71% 1-Year Est. Return
Creative Planning
Creative Planning Overland Park, Kansas $147B AUM 18.73% 1-Year Est. Return
Jennison Associates
Jennison Associates New York $145B AUM 34.61% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $154B AUM 29.96% 1-Year Est. Return
Canada Pension Plan Investment Board
Canada Pension Plan Investment Board Toronto Ontario, Ontario, Canada $155B AUM 29.93% 1-Year Est. Return
Victory Capital Management
Victory Capital Management San Antonio, Texas $156B AUM 27.51% 1-Year Est. Return
First Trust Advisors
First Trust Advisors Wheaton, Illinois $140B AUM 27.84% 1-Year Est. Return

Simplex Trading's Q3 2017 Portfolio in Review

As of Q3 2017, Simplex Trading held 7,357 positions worth $2.45B, up 6.4% from $2.3B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

Simplex Trading's Q3 2017 filing shows 1,313 new, 2,078 increased, 2,339 reduced and 1,500 closed positions. Its largest new stake was iShares Russell 2000 ETF: 214,170 shares worth $31.7M. The largest sale was State Street SPDR S&P 500 ETF Trust, an estimated $43.6M.

By sector, the portfolio is most concentrated in Consumer Discretionary at 14% of assets, up from 9.7% a quarter earlier, followed by Technology and Communication Services.

  • Simplex Trading's largest Q3 2017 buy was iShares Russell 2000 ETF: 214,170 shares worth $31.7M.
  • Simplex Trading added most to Amazon in Q3 2017, an estimated $45.9M increase.
  • Simplex Trading's biggest Q3 2017 reduction was Baidu, cutting an estimated $19.3M.
  • Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q3 2017, selling an estimated $43.6M.
  • Simplex Trading's ten largest holdings make up 24% of its $2.45B portfolio in Q3 2017.
  • Simplex Trading opened 1,313 new positions and closed 1,500 in Q3 2017.
  • Simplex Trading's portfolio value rose 6.4% quarter-over-quarter to $2.45B.

Based on Simplex Trading's 13F filing for Q3 2017, filed 25 Oct 2017.