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
SBAC icon
7701
SBA Communications
SBAC
$19B
– –
-4,918
Closed -$1.04M
SBLK icon
7702
Star Bulk Carriers
SBLK
$3B
– –
-17,709
Closed -$142K
SBRA icon
7703
Sabra Healthcare REIT
SBRA
$5.63B
– –
-130
Closed -$2.53K
SBS icon
7704
Sabesp
SBS
$20B
– –
-2,001
Closed -$4.37K
SCHD icon
7705
Schwab US Dividend Equity ETF
SCHD
$101B
– –
-2,262
Closed -$39K
SCHL icon
7706
PUT
Scholastic
SCHL
$873M
– –
-24
Closed -$95K
SCI icon
7707
Service Corp International
SCI
$11B
– –
-4,904
Closed -$212K
SCOR icon
7708
Comscore
SCOR
$114M
– –
-13
Closed -$2.78K
SCYX icon
7709
SCYNEXIS
SCYX
$39.1M
– –
0
– –
SCZ icon
7710
iShares MSCI EAFE Small-Cap ETF
SCZ
$13.4B
– –
-78
Closed -$4K
SDY icon
7711
State Street SPDR S&P Dividend ETF
SDY
$21.6B
– –
-8,180
Closed -$813K
SEDG icon
7712
SolarEdge
SEDG
$2.82B
– –
-3,188
Closed -$161K
SEE
7713
DELISTED
Sealed Air
SEE
– –
-17,548
Closed -$773K
SEIC icon
7714
CALL
SEI Investments
SEIC
$11.7B
– –
-447
Closed -$2.33M
SEM
7715
PUT
DELISTED
Select Medical
SEM
– –
-26
Closed -$19K
SF
7716
PUT
Stifel
SF
$12.2B
– –
-25
Closed -$58K
SFBS
7717
ServisFirst Bancshares
SFBS
$4.64B
– –
-22
Closed -$735
SFL icon
7718
PUT
SFL Corp
SFL
$1.53B
– –
-101
Closed -$124K
SGU icon
7719
Star Group
SGU
$429M
– –
-257
Closed -$2K
SHOO icon
7720
CALL
Steven Madden
SHOO
$3.09B
– –
-1
Closed -$3K
SHYG icon
7721
iShares 0-5 Year High Yield Corporate Bond ETF
SHYG
$7.58B
– –
-100
Closed -$4K
SIEB icon
7722
CALL
Siebert Financial
SIEB
$67.6M
– –
-34
Closed -$40K
SIRI icon
7723
SiriusXM
SIRI
$9.85B
$0 ﹤0.01%
8,977
+4,931
+122% +$280K
SIVR icon
7724
abrdn Physical Silver Shares ETF
SIVR
$4.02B
– –
-6,589
Closed -$95.4K
SKX
7725
DELISTED
Skechers
SKX
– –
-19,620
Closed -$605K
307 308
309
310 311

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.