We are live on ! Find out more
Simplex Trading

Simplex Trading Portfolio holdings

AUM $171B
1-Year Est. Return 85%
 

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
-10.88%
1 Year Est. Return
+85%
3 Year Est. Return
+183.25%
5 Year Est. Return
+145.21%
10 Year Est. Return
+1,056.84%
AUM
$1.36B
AUM Growth
+$171M
Cap. Flow
-$47.8M
Cap. Flow %
-3.51%
Top 10 Hldgs %
15.2%
Holding
7,014
New
1,810
Increased
2,203
Reduced
1,391
Closed
1,420

Top Buys

Rank Stock Value
1
IWM icon
iShares Russell 2000 ETF
IWM
+$29.8M
2
DIA icon
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
+$17.1M
3
DIS icon
Walt Disney
DIS
+$14.8M
4
GILD icon
Gilead Sciences
GILD
+$11.8M
5
EEM icon
iShares MSCI Emerging Markets ETF
EEM
+$11.2M

Top Sells

Rank Stock Value
1
GOOG icon
Alphabet (Google) Class C
GOOG
+$92.9M
2
AAPL icon
Apple
AAPL
+$22.5M
3
META icon
Meta Platforms (Facebook)
META
+$20.5M
4
IBM icon
IBM
IBM
+$12.7M
5
BIDU icon
Baidu
BIDU
+$10M

Sector Composition

Rank Sector Weight
1 Miscellaneous 65.37%
2 Healthcare 6.71%
3 Communication Services 4.77%
4 Technology 4.7%
5 Consumer Discretionary 4.67%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
SSP icon
6151
PUT
E.W. Scripps
SSP
$306M
– –
-17
Closed -$1K
SSTK icon
6152
CALL
Shutterstock
SSTK
$212M
– –
-9
Closed -$1K
STAA icon
6153
STAAR Surgical
STAA
$1.18B
– –
-418
Closed -$4K
STAA icon
6154
PUT
STAAR Surgical
STAA
$1.18B
– –
-5
Closed -$1K
STM icon
6155
STMicroelectronics
STM
$46.6B
– –
-799
Closed -$5.91K
STM icon
6156
PUT
STMicroelectronics
STM
$46.6B
– –
-14
Closed -$1K
STRL icon
6157
Sterling Infrastructure
STRL
$14.9B
$0 ﹤0.01%
+41
New +$187
STT icon
6158
State Street
STT
$53.4B
– –
-1,651
Closed -$123K
SUI icon
6159
PUT
Sun Communities
SUI
$14.5B
– –
-5
Closed -$2K
SUN icon
6160
CALL
Sunoco
SUN
$14.2B
– –
-43
Closed -$1K
SVC
6161
Service Properties Trust
SVC
$986M
– –
-215
Closed -$29.1K
SVC
6162
PUT
Service Properties Trust
SVC
$986M
– –
-4
Closed -$5K
SXC icon
6163
SunCoke Energy
SXC
$877M
– –
-5,239
Closed -$68K
SXC icon
6164
PUT
SunCoke Energy
SXC
$877M
– –
-63
Closed -$12K
SXI icon
6165
PUT
Standex International
SXI
$3.39B
– –
-79
Closed -$6K
TACT icon
6166
Transact Technologies
TACT
$53.1M
$0 ﹤0.01%
+60
New +$466
TAOP icon
6167
Taoping
TAOP
$7.65M
– –
0
– –
TAP icon
6168
Molson Coors Class B
TAP
$7.55B
– –
-22,745
Closed -$1.65M
TBI
6169
Trueblue
TBI
$300M
$0 ﹤0.01%
+15
New +$385
TCBI icon
6170
Texas Capital Bancshares
TCBI
$4.29B
– –
-2,250
Closed -$126K
TDC icon
6171
CALL
Teradata
TDC
$2.61B
– –
-64
Closed -$2K
TDG icon
6172
CALL
TransDigm Group
TDG
$64.2B
– –
-15
Closed -$1K
TDG icon
6173
TransDigm Group
TDG
$64.2B
– –
-695
Closed -$156K
TDG icon
6174
PUT
TransDigm Group
TDG
$64.2B
– –
-19
Closed -$13K
TDS icon
6175
Telephone and Data Systems
TDS
$4.35B
– –
-361
Closed -$10.1K
245 246
247
248 249

Similar funds

Creative Planning
Creative Planning Overland Park, Kansas $171B AUM 24.68% 1-Year Est. Return
First Trust Advisors
First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Jennison Associates
Jennison Associates New York $167B AUM 44.17% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $175B AUM 40.63% 1-Year Est. Return
VanEck Associates
VanEck Associates New York $164B AUM 112.45% 1-Year Est. Return
California Public Employees Retirement System
California Public Employees Retirement System Sacramento, California $177B AUM 39.86% 1-Year Est. Return
Victory Capital Management
Victory Capital Management San Antonio, Texas $178B AUM 37.23% 1-Year Est. Return

Simplex Trading's Q3 2015 Portfolio in Review

As of Q3 2015, Simplex Trading held 7,014 positions worth $1.36B, up 14% from $1.19B the previous quarter. Its ten largest holdings account for 15% of the portfolio.

Simplex Trading withdrew a net $47.8M in Q3 2015, closing 1,420 positions and reducing 1,391 holdings. Its most notable exit was IBM, an estimated $12.7M position sold in full.

By sector, the portfolio is most concentrated in Miscellaneous at 65% of assets, up from 42% a quarter earlier, followed by Healthcare and Communication Services.

Against the trend, Simplex Trading opened a new position in iShares Russell 2000 ETF worth $27.5M.

  • Simplex Trading's largest Q3 2015 buy was iShares Russell 2000 ETF: 251,486 shares worth $27.5M.
  • Simplex Trading added most to iShares MSCI Emerging Markets ETF in Q3 2015, an estimated $11.2M increase.
  • Simplex Trading's biggest Q3 2015 reduction was Alphabet (Google) Class C, cutting an estimated $92.9M.
  • Simplex Trading fully exited IBM in Q3 2015, selling an estimated $12.7M.
  • Simplex Trading's ten largest holdings make up 15% of its $1.36B portfolio in Q3 2015.
  • Simplex Trading opened 1,810 new positions and closed 1,420 in Q3 2015.
  • Simplex Trading's portfolio value rose 14% quarter-over-quarter to $1.36B.

Based on Simplex Trading's 13F filing for Q3 2015, filed 8 Oct 2015.