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
+5.31%
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
$25.5B
AUM Growth
+$23.2B
Cap. Flow
+$226M
Cap. Flow %
0.89%
Top 10 Hldgs %
29.06%
Holding
8,400
New
2,282
Increased
2,314
Reduced
2,591
Closed
1,035

Top Buys

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$34.5M
2
MU icon
Micron Technology
MU
+$33.9M
3
BRK.B icon
Berkshire Hathaway Class B
BRK.B
+$30.8M
4
NVDA icon
NVIDIA
NVDA
+$23.5M
5
DIA icon
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
+$22.2M

Top Sells

Rank Stock Value
1
TWX
Time Warner Inc
TWX
+$34.8M
2
AMZN icon
Amazon
AMZN
+$31.2M
3
TSLA icon
Tesla
TSLA
+$17.6M
4
NFLX icon
Netflix
NFLX
+$15.5M
5
AMD icon
Advanced Micro Devices
AMD
+$12.9M

Sector Composition

Rank Sector Weight
1 Technology 1.23%
2 Consumer Discretionary 0.92%
3 Communication Services 0.73%
4 Financials 0.62%
5 Industrials 0.6%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
JASO
8276
DELISTED
JA Solar Holdings, Co., Ltd
JASO
$0 ﹤0.01%
+100
New +$703
TNTR
8277
CALL
DELISTED
Tintri, Inc. Common Stock
TNTR
– –
-137
Closed -$1K
WGL
8278
CALL
DELISTED
Wgl Holdings
WGL
– –
-19
Closed -$2K
TEP
8279
DELISTED
Tallgrass Energy Partners, LP
TEP
– –
-76
Closed -$3.26K
YGE
8280
DELISTED
Yingli Green Energy Holding Comp
YGE
$0 ﹤0.01%
+267
New +$453
CAFD
8281
CALL
DELISTED
8point3 Energy Partners LP
CAFD
– –
-165
Closed -$1K
RPXC
8282
DELISTED
RPX Corporation
RPXC
– –
-3,241
Closed -$34.5K
RPXC
8283
PUT
DELISTED
RPX Corporation
RPXC
– –
-12
Closed -$3K
TWX
8284
CALL
DELISTED
Time Warner Inc
TWX
– –
-5,208
Closed -$988K
TWX
8285
DELISTED
Time Warner Inc
TWX
– –
-367,986
Closed -$34.8M
TWX
8286
PUT
DELISTED
Time Warner Inc
TWX
– –
-5,228
Closed -$1.22M
LAYN
8287
DELISTED
Layne Christensen Co
LAYN
– –
-19,294
Closed -$287K
GNRT
8288
DELISTED
Gener8 Maritime, Inc.
GNRT
– –
-385
Closed -$2K
ABLX
8289
CALL
DELISTED
Ablynx NV
ABLX
– –
-16
Closed -$35K
ABLX
8290
DELISTED
Ablynx NV
ABLX
– –
-260
Closed -$14K
MON
8291
CALL
DELISTED
Monsanto Co
MON
– –
-698
Closed -$36K
MON
8292
DELISTED
Monsanto Co
MON
– –
-527
Closed -$61K
MON
8293
PUT
DELISTED
Monsanto Co
MON
– –
-1,277
Closed -$171K
CXRX
8294
PUT
DELISTED
Concordia International Corp. Common Stock
CXRX
– –
-5
Closed -$2K
OA
8295
CALL
DELISTED
Orbital ATK, Inc.
OA
– –
-502
Closed -$26K
OA
8296
DELISTED
Orbital ATK, Inc.
OA
– –
-7,692
Closed -$1.02M
OA
8297
PUT
DELISTED
Orbital ATK, Inc.
OA
– –
-141
Closed -$13K
BGC
8298
CALL
DELISTED
General Cable Corporation
BGC
– –
-202
Closed -$3K
EEB
8299
CALL
DELISTED
Invesco BRIC ETF
EEB
– –
-2
Closed -$2K
AHGP
8300
CALL
DELISTED
Alliance Holdings GP
AHGP
– –
-22
Closed -$1K
330 331
332
333 334

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 Q2 2018 Portfolio in Review

As of Q2 2018, Simplex Trading held 8,400 positions worth $25.5B, up 1,022% from $2.27B the previous quarter. Its ten largest holdings account for 29% of the portfolio.

Simplex Trading's Q2 2018 filing shows 2,282 new, 2,314 increased, 2,591 reduced and 1,035 closed positions. Its largest new stake was Alphabet (Google) Class C: 291,860 shares worth $16.3M. The largest sale was Time Warner Inc, an estimated $34.8M.

By sector, the portfolio is most concentrated in Technology at 1.2% of assets, down from 6.2% a quarter earlier, followed by Consumer Discretionary and Communication Services.

  • Simplex Trading's largest Q2 2018 buy was Alphabet (Google) Class C: 291,860 shares worth $16.3M.
  • Simplex Trading added most to Apple in Q2 2018, an estimated $34.5M increase.
  • Simplex Trading's biggest Q2 2018 reduction was Amazon, cutting an estimated $31.2M.
  • Simplex Trading fully exited Time Warner Inc in Q2 2018, selling an estimated $34.8M.
  • Simplex Trading's ten largest holdings make up 29% of its $25.5B portfolio in Q2 2018.
  • Simplex Trading opened 2,282 new positions and closed 1,035 in Q2 2018.
  • Simplex Trading's portfolio value rose 1,022% quarter-over-quarter to $25.5B.

Based on Simplex Trading's 13F filing for Q2 2018, filed 30 Jul 2018.