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
+6.46%
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
$122B
AUM Growth
+$7.84B
Cap. Flow
-$3.39B
Cap. Flow %
-2.78%
Top 10 Hldgs %
42.57%
Holding
10,535
New
1,474
Increased
3,350
Reduced
3,913
Closed
1,517

Top Buys

Rank Stock Value
1
MSFT icon
Microsoft
MSFT
+$53.9M
2
TLT icon
iShares 20+ Year Treasury Bond ETF
TLT
+$52.9M
3
NVDA icon
NVIDIA
NVDA
+$47.1M
4
PYPL icon
PayPal
PYPL
+$41.7M
5
GOOG icon
Alphabet (Google) Class C
GOOG
+$28.4M

Top Sells

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$51.4M
2
WMT icon
Walmart Inc
WMT
+$46.4M
3
OIH icon
VanEck Oil Services ETF
OIH
+$34.2M
4
ADBE icon
Adobe
ADBE
+$33.5M
5
SBUX icon
Starbucks
SBUX
+$26.8M

Sector Composition

Rank Sector Weight
1 Technology 0.41%
2 Healthcare 0.21%
3 Consumer Discretionary 0.21%
4 Communication Services 0.2%
5 Financials 0.15%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
RPD icon
9776
Rapid7
RPD
$660M
– –
-15,331
Closed -$711K
RPM icon
9777
RPM International
RPM
$13.2B
– –
-6,025
Closed -$495K
RSPN icon
9778
Invesco S&P 500 Equal Weight Industrials ETF
RSPN
$1.09B
– –
-500
Closed -$18K
RTO icon
9779
PUT
Rentokil
RTO
$14.6B
– –
-500
Closed -$18K
RTX icon
9780
RTX Corp
RTX
$287B
– –
-12,858
Closed -$1.26M
RUM icon
9781
RUM Group Inc
RUM
$1.67B
$0 ﹤0.01%
1
-71,975
-100% -$678K
RUN icon
9782
Sunrun
RUN
$2.57B
$0 ﹤0.01%
+30
New +$558
RVP icon
9783
CALL
Retractable Technologies
RVP
$20.4M
– –
-800
Closed -$1K
RVSB icon
9784
Riverview Bancorp
RVSB
$107M
$0 ﹤0.01%
+14
New +$68
RXD icon
9785
ProShares UltraShort Health Care
RXD
$3.38M
– –
-16
Closed -$405
RWX icon
9786
State Street SPDR Dow Jones International Real Estate ETF
RWX
$263M
– –
-1,279
Closed -$33K
RXL icon
9787
ProShares Ultra Health Care
RXL
$81.8M
– –
-80
Closed -$3K
RYAAY icon
9788
Ryanair
RYAAY
$29.5B
– –
-703
Closed -$28.4K
RYZ
9789
CALL
Ryerson Holding Corp
RYZ
$1.58B
– –
-100
Closed -$3K
SACH
9790
Sachem Capital Corp
SACH
$40.1M
– –
-9,400
Closed -$31.7K
SACH
9791
PUT
Sachem Capital Corp
SACH
$40.1M
– –
-13,500
Closed -$50K
SAFT icon
9792
CALL
Safety Insurance
SAFT
$1.06B
– –
-200
Closed -$14K
SAH icon
9793
Sonic Automotive
SAH
$3.13B
– –
-128
Closed -$6K
SAH icon
9794
PUT
Sonic Automotive
SAH
$3.13B
– –
-3,100
Closed -$168K
SAND
9795
DELISTED
Sandstorm Gold
SAND
– –
-32,870
Closed -$183K
SAP icon
9796
SAP
SAP
$172B
– –
-20,402
Closed -$2.7M
SAR icon
9797
Saratoga Investment
SAR
$312M
– –
-548
Closed -$14.1K
SARK icon
9798
Tradr 2X Long Innovation ETFShort Innovation Daily ETF
SARK
$43.6M
– –
-559
Closed -$67K
SATL icon
9799
Satellogic
SATL
$574M
– –
-11
Closed –
SATL icon
9800
PUT
Satellogic
SATL
$574M
– –
-500
Closed -$1K
390 391
392
393 394

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 2023 Portfolio in Review

As of Q2 2023, Simplex Trading held 10,535 positions worth $122B, up 6.9% from $114B the previous quarter. Its ten largest holdings account for 43% of the portfolio.

Simplex Trading's Q2 2023 filing shows 1,474 new, 3,350 increased, 3,913 reduced and 1,517 closed positions. Its largest new stake was Microsoft: 171,935 shares worth $58.5M. The largest sale was Apple, an estimated $51.4M.

By sector, the portfolio is most concentrated in Technology at 0.41% of assets, down from 0.42% a quarter earlier, followed by Healthcare and Consumer Discretionary.

  • Simplex Trading's largest Q2 2023 buy was Microsoft: 171,935 shares worth $58.5M.
  • Simplex Trading added most to iShares 20+ Year Treasury Bond ETF in Q2 2023, an estimated $52.9M increase.
  • Simplex Trading's biggest Q2 2023 reduction was Adobe, cutting an estimated $33.5M.
  • Simplex Trading fully exited Apple in Q2 2023, selling an estimated $51.4M.
  • Simplex Trading's ten largest holdings make up 43% of its $122B portfolio in Q2 2023.
  • Simplex Trading opened 1,474 new positions and closed 1,517 in Q2 2023.
  • Simplex Trading's portfolio value rose 6.9% quarter-over-quarter to $122B.

Based on Simplex Trading's 13F filing for Q2 2023, filed 4 Aug 2023.