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
+3.04%
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
$2.27B
AUM Growth
-$49.2M
Cap. Flow
-$210M
Cap. Flow %
-9.24%
Top 10 Hldgs %
17.82%
Holding
7,591
New
1,643
Increased
2,060
Reduced
2,267
Closed
1,502

Top Buys

Rank Stock Value
1
TSLA icon
Tesla
TSLA
+$33.5M
2
NFLX icon
Netflix
NFLX
+$22.8M
3
DIA icon
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
+$20.9M
4
TWX
Time Warner Inc
TWX
+$18.3M
5
BABA icon
Alibaba
BABA
+$15.2M

Top Sells

Rank Stock Value
1
AMZN icon
Amazon
AMZN
+$71.1M
2
MU icon
Micron Technology
MU
+$43.8M
3
GOOG icon
Alphabet (Google) Class C
GOOG
+$26.3M
4
BKNG icon
Booking.com
BKNG
+$22.2M
5
BA icon
Boeing
BA
+$21.6M

Sector Composition

Rank Sector Weight
1 Consumer Discretionary 7.87%
2 Communication Services 7.14%
3 Technology 6.23%
4 Financials 5.5%
5 Healthcare 5.2%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
BEN icon
6126
Franklin Resources
BEN
$16.9B
– –
-4,577
Closed -$186K
BF.B icon
6127
PUT
Brown-Forman Class B
BF.B
$12B
– –
-134
Closed -$3K
BGFV
6128
DELISTED
Big 5 Sporting Goods
BGFV
– –
-7,637
Closed -$48.3K
BHE icon
6129
Benchmark Electronics
BHE
$2.91B
– –
-4,239
Closed -$127K
BHE icon
6130
PUT
Benchmark Electronics
BHE
$2.91B
– –
-66
Closed -$6K
BHR
6131
CALL
Braemar Hotels & Resorts
BHR
$153M
– –
-220
Closed -$2K
BHR
6132
PUT
Braemar Hotels & Resorts
BHR
$153M
– –
-135
Closed -$6K
BIIB icon
6133
Biogen
BIIB
$29.9B
– –
-13,807
Closed -$4.29M
BJRI icon
6134
PUT
BJ's Restaurants
BJRI
$1.41B
– –
-326
Closed -$2K
BNY
6135
Bank of New York Mellon
BNY
$108B
– –
-48,834
Closed -$2.72M
BKD icon
6136
Brookdale Senior Living
BKD
$3.62B
– –
-41,121
Closed -$347K
BKF icon
6137
iShares MSCI BIC ETF
BKF
$75.2M
– –
-25,155
Closed -$1.12M
BKLN icon
6138
Invesco Senior Loan ETF
BKLN
$7.1B
– –
-2,326
Closed -$53K
BKNG icon
6139
Booking.com
BKNG
$138B
– –
-282,000
Closed -$22.2M
BKR icon
6140
Baker Hughes
BKR
$56.8B
– –
-31,747
Closed -$971K
BKU icon
6141
CALL
Bankunited
BKU
$3.38B
– –
-98
Closed -$17K
BLDP
6142
CALL
Ballard Power Systems
BLDP
$874M
– –
-116
Closed -$2K
BLK icon
6143
Blackrock
BLK
$164B
– –
-7,007
Closed -$3.85M
BLKB icon
6144
Blackbaud
BLKB
$1.5B
– –
-428
Closed -$42.7K
BLMN icon
6145
Bloomin' Brands
BLMN
$680M
– –
-2,095
Closed -$47.4K
BMA icon
6146
CALL
Banco Macro
BMA
$5.7B
– –
-135
Closed -$16K
BMO icon
6147
Bank of Montreal
BMO
$125B
– –
-9,404
Closed -$740K
BND icon
6148
Vanguard Total Bond Market
BND
$157B
– –
-99
Closed -$7.92K
BOIL icon
6149
ProShares Ultra Bloomberg Natural Gas
BOIL
$417M
– –
-3
Closed -$178K
BOKF icon
6150
CALL
BOK Financial
BOKF
$8.64B
– –
-10
Closed -$1K
244 245
246
247 248

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 Q1 2018 Portfolio in Review

As of Q1 2018, Simplex Trading held 7,591 positions worth $2.27B, down 2.1% from $2.32B the previous quarter. Its ten largest holdings account for 18% of the portfolio.

Simplex Trading withdrew a net $210M in Q1 2018, closing 1,502 positions and reducing 2,267 holdings. Its most notable exit was Alphabet (Google) Class C, an estimated $26.3M position sold in full.

By sector, the portfolio is most concentrated in Consumer Discretionary at 7.9% of assets, down from 11% a quarter earlier, followed by Communication Services and Technology.

Against the trend, Simplex Trading opened a new position in Tesla worth $27.1M.

  • Simplex Trading's largest Q1 2018 buy was Tesla: 1,525,035 shares worth $27.1M.
  • Simplex Trading added most to Netflix in Q1 2018, an estimated $22.8M increase.
  • Simplex Trading's biggest Q1 2018 reduction was Amazon, cutting an estimated $71.1M.
  • Simplex Trading fully exited Alphabet (Google) Class C in Q1 2018, selling an estimated $26.3M.
  • Simplex Trading's ten largest holdings make up 18% of its $2.27B portfolio in Q1 2018.
  • Simplex Trading opened 1,643 new positions and closed 1,502 in Q1 2018.
  • Simplex Trading's portfolio value fell 2.1% quarter-over-quarter to $2.27B.

Based on Simplex Trading's 13F filing for Q1 2018, filed 26 Apr 2018.