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
+17.83%
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
$36B
AUM Growth
+$1.89B
Cap. Flow
-$586M
Cap. Flow %
-1.63%
Top 10 Hldgs %
34.84%
Holding
8,479
New
1,472
Increased
3,049
Reduced
2,419
Closed
1,324

Top Buys

Rank Stock Value
1
QQQ icon
Invesco QQQ Trust
QQQ
+$86.9M
2
DIS icon
Walt Disney
DIS
+$25.5M
3
BIDU icon
Baidu
BIDU
+$12.3M
4
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$12.3M
5
RHT
Red Hat Inc
RHT
+$11.4M

Top Sells

Rank Stock Value
1
AMZN icon
Amazon
AMZN
+$66M
2
IWM icon
iShares Russell 2000 ETF
IWM
+$60.3M
3
GOOG icon
Alphabet (Google) Class C
GOOG
+$33.9M
4
AAPL icon
Apple
AAPL
+$21.1M
5
XLF icon
State Street Financial Select Sector SPDR ETF
XLF
+$18.2M

Sector Composition

Rank Sector Weight
1 Communication Services 0.58%
2 Technology 0.42%
3 Healthcare 0.34%
4 Consumer Discretionary 0.29%
5 Industrials 0.21%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
OSUR icon
6676
OraSure Technologies
OSUR
$273M
$3K ﹤0.01%
356
+21
+6% +$243
PBPB
6677
DELISTED
Potbelly
PBPB
$3K ﹤0.01%
432
+327
+311% +$2.76K
PKE icon
6678
Park Aerospace
PKE
$745M
$3K ﹤0.01%
+246
New +$4.63K
PLAB icon
6679
PUT
Photronics
PLAB
$1.79B
$3K ﹤0.01%
+4
New +$41
PRA
6680
PUT
DELISTED
ProAssurance
PRA
$3K ﹤0.01%
1
-17
-94% -$688
QDEL icon
6681
QuidelOrtho
QDEL
$1.09B
$3K ﹤0.01%
48
-3,183
-99% -$193K
QUIK icon
6682
CALL
QuickLogic
QUIK
$224M
$3K ﹤0.01%
+4
New +$47
QUIK icon
6683
QuickLogic
QUIK
$224M
$3K ﹤0.01%
391
-647
-62% -$7.57K
REVG
6684
DELISTED
REV Group
REVG
$3K ﹤0.01%
+344
New +$3.11K
REXR icon
6685
CALL
Rexford Industrial Realty
REXR
$8.7B
$3K ﹤0.01%
+1
New +$34
RM icon
6686
Regional Management Corp
RM
$384M
$3K ﹤0.01%
+157
New +$4.18K
RRX icon
6687
Regal Rexnord
RRX
$14.2B
$3K ﹤0.01%
37
-150
-80% -$11.8K
SCSC icon
6688
CALL
Scansource
SCSC
$1.12B
$3K ﹤0.01%
+1
New +$37
SHOO icon
6689
CALL
Steven Madden
SHOO
$3.12B
$3K ﹤0.01%
1
-3
-75% -$98
SNCR
6690
CALL
DELISTED
Synchronoss Technologies
SNCR
$3K ﹤0.01%
1
– –
SNDA icon
6691
CALL
Sonida Senior Living
SNDA
$1.97B
$3K ﹤0.01%
+1
New +$91
SOL
6692
CALL
DELISTED
Emeren Group
SOL
$3K ﹤0.01%
20
– –
SPYM
6693
State Street SPDR Portfolio S&P 500 ETF
SPYM
$158B
$3K ﹤0.01%
+100
New +$3.19K
SPNS
6694
DELISTED
Sapiens International
SPNS
$3K ﹤0.01%
+243
New +$3.2K
SSL icon
6695
PUT
Sasol
SSL
$7.58B
$3K ﹤0.01%
+1
New +$30
SUP
6696
CALL
DELISTED
Superior Industries International
SUP
$3K ﹤0.01%
8
+2
+33% +$11
TISI icon
6697
CALL
Team
TISI
$77.7M
– –
0
– –
TNL icon
6698
Travel + Leisure Co
TNL
$4.54B
$3K ﹤0.01%
80
-6,506
-99% -$274K
TRAK icon
6699
ReposiTrak
TRAK
$148M
$3K ﹤0.01%
486
-2,455
-83% -$19.2K
TRUE
6700
PUT
DELISTED
TrueCar
TRUE
$3K ﹤0.01%
5
-37
-88% -$309
266 267
268
269 270

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 2019 Portfolio in Review

As of Q1 2019, Simplex Trading held 8,479 positions worth $36B, up 5.5% from $34.1B the previous quarter. Its ten largest holdings account for 35% of the portfolio.

Simplex Trading's Q1 2019 filing shows 1,472 new, 3,049 increased, 2,419 reduced and 1,324 closed positions. Its largest new stake was Walt Disney: 228,471 shares worth $25.4M. The largest sale was Amazon, an estimated $66M.

By sector, the portfolio is most concentrated in Communication Services at 0.58% of assets, up from 0.49% a quarter earlier, followed by Technology and Healthcare.

  • Simplex Trading's largest Q1 2019 buy was Walt Disney: 228,471 shares worth $25.4M.
  • Simplex Trading added most to Invesco QQQ Trust in Q1 2019, an estimated $86.9M increase.
  • Simplex Trading's biggest Q1 2019 reduction was iShares Russell 2000 ETF, cutting an estimated $60.3M.
  • Simplex Trading fully exited Amazon in Q1 2019, selling an estimated $66M.
  • Simplex Trading's ten largest holdings make up 35% of its $36B portfolio in Q1 2019.
  • Simplex Trading opened 1,472 new positions and closed 1,324 in Q1 2019.
  • Simplex Trading's portfolio value rose 5.5% quarter-over-quarter to $36B.

Based on Simplex Trading's 13F filing for Q1 2019, filed 18 Apr 2019.