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
+2.11%
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
$36.6B
AUM Growth
+$674M
Cap. Flow
-$192M
Cap. Flow %
-0.52%
Top 10 Hldgs %
34.99%
Holding
8,406
New
1,261
Increased
2,604
Reduced
3,015
Closed
1,301

Top Buys

Rank Stock Value
1
NVDA icon
NVIDIA
NVDA
+$29.6M
2
XLI icon
State Street Industrial Select Sector SPDR ETF
XLI
+$22.6M
3
IWM icon
iShares Russell 2000 ETF
IWM
+$17.9M
4
NFLX icon
Netflix
NFLX
+$17.1M
5
TLT icon
iShares 20+ Year Treasury Bond ETF
TLT
+$13.4M

Top Sells

Rank Stock Value
1
QQQ icon
Invesco QQQ Trust
QQQ
+$123M
2
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$40.6M
3
DIS icon
Walt Disney
DIS
+$25.6M
4
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$13.5M
5
JNJ icon
Johnson & Johnson
JNJ
+$11.2M

Sector Composition

Rank Sector Weight
1 Technology 0.5%
2 Communication Services 0.5%
3 Healthcare 0.35%
4 Industrials 0.3%
5 Consumer Discretionary 0.26%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
CSR
7201
PUT
Centerspace
CSR
$938M
– –
-1
Closed -$5K
CTMX icon
7202
CytomX Therapeutics
CTMX
$703M
– –
-144
Closed -$1K
CTRA
7203
DELISTED
Coterra Energy
CTRA
– –
-88,919
Closed -$2.26M
CTSO icon
7204
CALL
Cytosorbents Corp
CTSO
$23.1M
– –
-81
Closed -$61K
CUK
7205
DELISTED
Carnival PLC
CUK
– –
-51
Closed -$2.62K
CUK
7206
PUT
DELISTED
Carnival PLC
CUK
– –
-2
Closed -$9K
CVE icon
7207
Cenovus Energy
CVE
$54.6B
– –
-12,657
Closed -$114K
CVEO icon
7208
Civeo
CVEO
$384M
$0 ﹤0.01%
30
-10
-25% -$216
CVLG icon
7209
Covenant Logistics
CVLG
$1.18B
– –
-5,092
Closed -$44.6K
CVLG icon
7210
PUT
Covenant Logistics
CVLG
$1.18B
– –
-118
Closed -$111K
CVLT icon
7211
Commault Systems
CVLT
$5.89B
– –
-3,962
Closed -$211K
CW icon
7212
Curtiss-Wright
CW
$27.6B
– –
-118
Closed -$13.6K
CWT icon
7213
PUT
California Water Service
CWT
$3.05B
– –
-5
Closed -$27K
CX icon
7214
Cemex
CX
$17.5B
– –
-9,846
Closed -$44K
CYD icon
7215
PUT
China Yuchai International
CYD
$1.71B
– –
-69
Closed -$109K
CYTK icon
7216
Cytokinetics
CYTK
$10.9B
– –
-228
Closed -$2.2K
DCI icon
7217
Donaldson
DCI
$10.7B
– –
-34
Closed -$1K
DCI icon
7218
PUT
Donaldson
DCI
$10.7B
– –
-4
Closed -$20K
DCO icon
7219
Ducommun
DCO
$2.67B
– –
-4,270
Closed -$185K
DD icon
7220
DuPont de Nemours
DD
$18.6B
– –
-41,470
Closed -$4.95M
DEA
7221
Easterly Government Properties
DEA
$1.18B
$0 ﹤0.01%
6
-65
-92% -$2.96K
DEI icon
7222
CALL
Douglas Emmett
DEI
$2.07B
– –
-6
Closed -$24K
DGII icon
7223
Digi International
DGII
$2.51B
– –
-231
Closed -$2.81K
DGX icon
7224
Quest Diagnostics
DGX
$25.3B
– –
-19,497
Closed -$1.87M
DHI icon
7225
D.R. Horton
DHI
$40.8B
– –
-42,896
Closed -$1.9M
287 288
289
290 291

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 2019 Portfolio in Review

As of Q2 2019, Simplex Trading held 8,406 positions worth $36.6B, up 1.9% from $36B the previous quarter. Its ten largest holdings account for 35% of the portfolio.

Simplex Trading's Q2 2019 filing shows 1,261 new, 2,604 increased, 3,015 reduced and 1,301 closed positions. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 105,724 shares worth $14M. The largest sale was Invesco QQQ Trust, an estimated $123M.

By sector, the portfolio is most concentrated in Technology at 0.5% of assets, up from 0.42% a quarter earlier, followed by Communication Services and Healthcare.

  • Simplex Trading's largest Q2 2019 buy was iShares 20+ Year Treasury Bond ETF: 105,724 shares worth $14M.
  • Simplex Trading added most to NVIDIA in Q2 2019, an estimated $29.6M increase.
  • Simplex Trading's biggest Q2 2019 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $40.6M.
  • Simplex Trading fully exited Invesco QQQ Trust in Q2 2019, selling an estimated $123M.
  • Simplex Trading's ten largest holdings make up 35% of its $36.6B portfolio in Q2 2019.
  • Simplex Trading opened 1,261 new positions and closed 1,301 in Q2 2019.
  • Simplex Trading's portfolio value rose 1.9% quarter-over-quarter to $36.6B.

Based on Simplex Trading's 13F filing for Q2 2019, filed 26 Jul 2019.