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Simplex Trading

Simplex Trading Portfolio holdings

AUM $171B
1-Year Est. Return 85%
 

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
-17.92%
1 Year Est. Return
+85%
3 Year Est. Return
+183.25%
5 Year Est. Return
+145.21%
10 Year Est. Return
+1,056.84%
AUM
$94.1B
AUM Growth
-$15.3B
Cap. Flow
+$638M
Cap. Flow %
0.68%
Top 10 Hldgs %
40.12%
Holding
11,810
New
1,404
Increased
4,026
Reduced
4,284
Closed
1,790

Top Buys

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$286M
2
VOO icon
Vanguard S&P 500 ETF
VOO
+$82.3M
3
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$72.6M
4
GOOG icon
Alphabet (Google) Class C
GOOG
+$64.2M
5
INTC icon
Intel
INTC
+$52.9M

Top Sells

Rank Stock Value
1
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$51.5M
2
SLV icon
iShares Silver Trust
SLV
+$41.8M
3
F icon
Ford
F
+$26.3M
4
UAL icon
United Airlines
UAL
+$22.7M
5
XOM icon
ExxonMobil
XOM
+$22.3M

Sector Composition

Rank Sector Weight
1 Miscellaneous 97.48%
2 Technology 0.84%
3 Consumer Discretionary 0.32%
4 Communication Services 0.32%
5 Financials 0.28%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
CMCSA icon
10051
Comcast
CMCSA
$93B
– –
-5,348
Closed -$229K
CMG icon
10052
Chipotle Mexican Grill
CMG
$47B
– –
-94,000
Closed -$2.62M
CMPR icon
10053
Cimpress
CMPR
$2.06B
– –
-100
Closed -$6K
CMS icon
10054
CMS Energy
CMS
$21.7B
– –
-506
Closed -$34.9K
CNET icon
10055
CALL
ZW Data Action Technologies
CNET
$4.62M
– –
-235
Closed -$3K
CNET icon
10056
PUT
ZW Data Action Technologies
CNET
$4.62M
– –
-225
Closed -$3K
CNK icon
10057
Cinemark Holdings
CNK
$4.05B
– –
-43,994
Closed -$697K
CNMD icon
10058
CONMED
CNMD
$1.38B
– –
-2,189
Closed -$263K
CNO icon
10059
CALL
CNO Financial Group
CNO
$5.13B
– –
-200
Closed -$5K
CNNE icon
10060
Cannae Holdings
CNNE
$665M
– –
-10,968
Closed -$230K
CNP icon
10061
CenterPoint Energy
CNP
$26.4B
– –
-4,365
Closed -$134K
CNS icon
10062
CALL
Cohen & Steers
CNS
$4.06B
– –
-100
Closed -$8K
CNTB
10063
Connect Biopharma Holdings
CNTB
$123M
– –
-1,255
Closed -$3K
CNTB
10064
PUT
Connect Biopharma Holdings
CNTB
$123M
– –
-800
Closed -$2K
CNTY icon
10065
Century Casinos
CNTY
$33.8M
– –
-2,461
Closed -$23K
CNXN icon
10066
CALL
PC Connection
CNXN
$2.09B
– –
-100
Closed -$5K
CNXN icon
10067
PC Connection
CNXN
$2.09B
– –
-248
Closed -$11.8K
COCO icon
10068
Vita Coco
COCO
$3.16B
– –
-2,091
Closed -$22.1K
CODX
10069
Co-Diagnostics
CODX
$7.89M
– –
-159
Closed -$24.2K
COF icon
10070
Capital One
COF
$132B
– –
-44,906
Closed -$5.49M
COHU icon
10071
Cohu
COHU
$2.51B
– –
-755
Closed -$20.8K
COLB icon
10072
CALL
Columbia Banking Systems
COLB
$8.65B
– –
-600
Closed -$19K
COO icon
10073
Cooper Companies
COO
$13.2B
– –
-36,016
Closed -$3.19M
COOP
10074
DELISTED
Mr. Cooper
COOP
– –
-23,150
Closed -$980K
COPX icon
10075
Global X Copper Miners ETF NEW
COPX
$8.6B
– –
-26,324
Closed -$1.2M
401 402
403
404 405

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Simplex Trading's Q2 2022 Portfolio in Review

As of Q2 2022, Simplex Trading held 11,810 positions worth $94.1B, down 14% from $109B the previous quarter. Its ten largest holdings account for 40% of the portfolio.

Simplex Trading's Q2 2022 filing shows 1,404 new, 4,026 increased, 4,284 reduced and 1,790 closed positions. Its largest new stake was Alphabet (Google) Class C: 543,540 shares worth $59.4M. The largest sale was State Street SPDR S&P 500 ETF Trust, an estimated $51.5M.

By sector, the portfolio is most concentrated in Miscellaneous at 97% of assets, down from 98% a quarter earlier, followed by Technology and Consumer Discretionary.

  • Simplex Trading's largest Q2 2022 buy was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
  • Simplex Trading added most to Apple in Q2 2022, an estimated $286M increase.
  • Simplex Trading's biggest Q2 2022 reduction was United Airlines, cutting an estimated $22.7M.
  • Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2022, selling an estimated $51.5M.
  • Simplex Trading's ten largest holdings make up 40% of its $94.1B portfolio in Q2 2022.
  • Simplex Trading opened 1,404 new positions and closed 1,790 in Q2 2022.
  • Simplex Trading's portfolio value fell 14% quarter-over-quarter to $94.1B.

Based on Simplex Trading's 13F filing for Q2 2022, filed 3 Aug 2022.