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
+2.14%
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
$860M
AUM Growth
+$34.4M
Cap. Flow
-$17.8M
Cap. Flow %
-2.07%
Top 10 Hldgs %
14.96%
Holding
6,670
New
1,973
Increased
1,386
Reduced
1,513
Closed
1,643

Top Buys

Rank Stock Value
1
GOOG icon
Alphabet (Google) Class C
GOOG
+$40.1M
2
BRK.B icon
Berkshire Hathaway Class B
BRK.B
+$12.5M
3
BABA icon
Alibaba
BABA
+$10.5M
4
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$9.89M
5
INTC icon
Intel
INTC
+$9.83M

Top Sells

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$35.7M
2
GILD icon
Gilead Sciences
GILD
+$32.3M
3
AMZN icon
Amazon
AMZN
+$29M
4
BKNG icon
Booking.com
BKNG
+$28.4M
5
BIDU icon
Baidu
BIDU
+$13.3M

Sector Composition

Rank Sector Weight
1 Communication Services 7.76%
2 Consumer Discretionary 7.62%
3 Healthcare 7.24%
4 Technology 6.95%
5 Financials 4.83%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
MX icon
4151
CALL
Magnachip Semiconductor
MX
$125M
$2K ﹤0.01%
21
+5
+31% +$47
NAVI icon
4152
CALL
Navient
NAVI
$807M
$2K ﹤0.01%
24
+3
+14% +$62
NAVI icon
4153
PUT
Navient
NAVI
$807M
$2K ﹤0.01%
+23
New +$473
NBR icon
4154
CALL
Nabors Industries
NBR
$1.16B
– –
-11
Closed -$6.71K
NGD
4155
PUT
DELISTED
New Gold Inc
NGD
$2K ﹤0.01%
14
-14
-50% -$55
NGL icon
4156
PUT
NGL Energy Partners
NGL
$1.89B
$2K ﹤0.01%
42
-33
-44% -$932
NMM icon
4157
Navios Maritime Partners
NMM
$2.2B
$2K ﹤0.01%
15
-129
-90% -$23.3K
NPO icon
4158
Enpro
NPO
$6.84B
$2K ﹤0.01%
43
-132
-75% -$8.45K
NRT
4159
PUT
North European Oil Royalty Trust
NRT
$79.7M
$2K ﹤0.01%
+10
New +$132
NVDA icon
4160
PUT
NVIDIA
NVDA
$4.79T
$2K ﹤0.01%
520
-480
-48% -$255
NVGS icon
4161
CALL
Navigator Holdings
NVGS
$1.33B
$2K ﹤0.01%
+9
New +$162
NVGS icon
4162
PUT
Navigator Holdings
NVGS
$1.33B
$2K ﹤0.01%
12
+1
+9% +$18
OIS icon
4163
Oil States International
OIS
$515M
$2K ﹤0.01%
72
-1,748
-96% -$74K
OMER icon
4164
PUT
Omeros
OMER
$812M
$2K ﹤0.01%
20
-3
-13% -$68
OMF icon
4165
PUT
OneMain Financial
OMF
$7.03B
$2K ﹤0.01%
+38
New +$1.53K
OSIS icon
4166
CALL
OSI Systems
OSIS
$3.53B
$2K ﹤0.01%
5
-1
-17% -$72
OSUR icon
4167
PUT
OraSure Technologies
OSUR
$274M
$2K ﹤0.01%
+7
New +$58
OVV icon
4168
CALL
Ovintiv
OVV
$16.8B
$2K ﹤0.01%
8
-12
-60% -$755
PBI icon
4169
CALL
Pitney Bowes
PBI
$2.46B
$2K ﹤0.01%
58
+45
+346% +$1.05K
PDS
4170
CALL
Precision Drilling
PDS
$1.04B
$2K ﹤0.01%
3
– –
PEGA icon
4171
CALL
Pegasystems
PEGA
$4.79B
$2K ﹤0.01%
+50
New +$517
PH icon
4172
CALL
Parker-Hannifin
PH
$124B
$2K ﹤0.01%
5
-31
-86% -$3.76K
PLCE icon
4173
PUT
Children's Place
PLCE
$52.9M
$2K ﹤0.01%
25
+5
+25% +$301
PPL
4174
PUT
PPL Corp
PPL
$27.1B
$2K ﹤0.01%
28
+1
+4% +$32
PRLB icon
4175
CALL
Protolabs
PRLB
$1.84B
$2K ﹤0.01%
5
-17
-77% -$1.15K
165 166
167
168 169

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 2015 Portfolio in Review

As of Q1 2015, Simplex Trading held 6,670 positions worth $860M, up 4.2% from $826M the previous quarter. Its ten largest holdings account for 15% of the portfolio.

Simplex Trading's Q1 2015 filing shows 1,973 new, 1,386 increased, 1,513 reduced and 1,643 closed positions. Its largest new stake was Alphabet (Google) Class C: 1,497,580 shares worth $41.4M. The largest sale was Apple, an estimated $35.7M.

By sector, the portfolio is most concentrated in Communication Services at 7.8% of assets, up from 4.8% a quarter earlier, followed by Consumer Discretionary and Healthcare.

  • Simplex Trading's largest Q1 2015 buy was Alphabet (Google) Class C: 1,497,580 shares worth $41.4M.
  • Simplex Trading added most to Alibaba in Q1 2015, an estimated $10.5M increase.
  • Simplex Trading's biggest Q1 2015 reduction was Apple, cutting an estimated $35.7M.
  • Simplex Trading fully exited Amazon in Q1 2015, selling an estimated $29M.
  • Simplex Trading's ten largest holdings make up 15% of its $860M portfolio in Q1 2015.
  • Simplex Trading opened 1,973 new positions and closed 1,643 in Q1 2015.
  • Simplex Trading's portfolio value rose 4.2% quarter-over-quarter to $860M.

Based on Simplex Trading's 13F filing for Q1 2015, filed 21 Apr 2015.