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
+7.55%
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
$31.1B
AUM Growth
+$5.63B
Cap. Flow
+$12.2M
Cap. Flow %
0.04%
Top 10 Hldgs %
33.61%
Holding
8,699
New
1,336
Increased
3,066
Reduced
2,755
Closed
1,315

Top Buys

Rank Stock Value
1
AMZN icon
Amazon
AMZN
+$148M
2
QQQ icon
Invesco QQQ Trust
QQQ
+$67.3M
3
META icon
Meta Platforms (Facebook)
META
+$63.2M
4
GS icon
Goldman Sachs
GS
+$23.9M
5
C icon
Citigroup
C
+$23.1M

Top Sells

Rank Stock Value
1
BRK.B icon
Berkshire Hathaway Class B
BRK.B
+$47.5M
2
AAPL icon
Apple
AAPL
+$46M
3
DIA icon
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
+$44.5M
4
MU icon
Micron Technology
MU
+$29.1M
5
ADBE icon
Adobe
ADBE
+$22.2M

Sector Composition

Rank Sector Weight
1 Consumer Discretionary 1.13%
2 Communication Services 0.89%
3 Technology 0.68%
4 Industrials 0.51%
5 Healthcare 0.44%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
VUZI icon
8151
PUT
Vuzix
VUZI
$201M
– –
-155
Closed -$115K
VVV icon
8152
Valvoline
VVV
$4.98B
– –
-5,336
Closed -$116K
VVX icon
8153
V2X
VVX
$2.54B
– –
-1,746
Closed -$56.3K
WBA
8154
DELISTED
Walgreens Boots Alliance
WBA
– –
-6,184
Closed -$420K
WBD icon
8155
Warner Bros
WBD
$64.8B
– –
-3,845
Closed -$105K
WCN
8156
Waste Connections
WCN
$42.7B
– –
-1,598
Closed -$125K
WH icon
8157
CALL
Wyndham Hotels & Resorts
WH
$5.67B
– –
-248
Closed -$1.46M
WMB icon
8158
CALL
Williams Companies
WMB
$91.1B
– –
-416
Closed -$1.13M
WMB icon
8159
Williams Companies
WMB
$91.1B
$0 ﹤0.01%
43,530
+35,162
+420% +$1.02M
WMB icon
8160
PUT
Williams Companies
WMB
$91.1B
– –
-275
Closed -$745K
WMS icon
8161
CALL
Advanced Drainage Systems
WMS
$10.9B
– –
-1
Closed -$2K
WOR icon
8162
Worthington Enterprises
WOR
$2.71B
– –
-487
Closed -$13.7K
WPC icon
8163
W.P. Carey
WPC
$16.8B
– –
-22
Closed -$1.42K
WPP icon
8164
WPP
WPP
$3.95B
– –
-348
Closed -$27.2K
WRB icon
8165
W.R. Berkley
WRB
$26.9B
– –
-226
Closed -$5.13K
WRB icon
8166
PUT
W.R. Berkley
WRB
$26.9B
– –
-44
Closed -$94K
WSM icon
8167
Williams-Sonoma
WSM
$26.2B
– –
-45,148
Closed -$1.43M
WST icon
8168
CALL
West Pharmaceutical
WST
$25.3B
– –
-40
Closed -$397K
WT icon
8169
WisdomTree
WT
$3.05B
– –
-1,794
Closed -$15.2K
WWD icon
8170
Woodward
WWD
$24.1B
– –
-1,540
Closed -$124K
XBI icon
8171
State Street SPDR S&P Biotech ETF
XBI
$10.2B
– –
-35,406
Closed -$3.37M
XHR
8172
CALL
Xenia Hotels & Resorts
XHR
$1.97B
– –
-3
Closed -$7K
XLI icon
8173
State Street Industrial Select Sector SPDR ETF
XLI
$33.2B
– –
-75,505
Closed -$5.41M
XLK icon
8174
State Street Technology Select Sector SPDR ETF
XLK
$117B
– –
-42,492
Closed -$1.48M
XOM icon
8175
ExxonMobil
XOM
$640B
– –
-161,921
Closed -$13.2M
325 326
327
328 329

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 2018 Portfolio in Review

As of Q3 2018, Simplex Trading held 8,699 positions worth $31.1B, up 22% from $25.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.

Simplex Trading's Q3 2018 filing shows 1,336 new, 3,066 increased, 2,755 reduced and 1,315 closed positions. Its largest new stake was Invesco QQQ Trust: 371,806 shares worth $69.1M. The largest sale was Berkshire Hathaway Class B, an estimated $47.5M.

By sector, the portfolio is most concentrated in Consumer Discretionary at 1.1% of assets, up from 0.92% a quarter earlier, followed by Communication Services and Technology.

  • Simplex Trading's largest Q3 2018 buy was Invesco QQQ Trust: 371,806 shares worth $69.1M.
  • Simplex Trading added most to Amazon in Q3 2018, an estimated $148M increase.
  • Simplex Trading's biggest Q3 2018 reduction was Apple, cutting an estimated $46M.
  • Simplex Trading fully exited Berkshire Hathaway Class B in Q3 2018, selling an estimated $47.5M.
  • Simplex Trading's ten largest holdings make up 34% of its $31.1B portfolio in Q3 2018.
  • Simplex Trading opened 1,336 new positions and closed 1,315 in Q3 2018.
  • Simplex Trading's portfolio value rose 22% quarter-over-quarter to $31.1B.

Based on Simplex Trading's 13F filing for Q3 2018, filed 23 Oct 2018.