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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
-4.86%
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
$88.5B
AUM Growth
-$5.62B
Cap. Flow
-$2.04B
Cap. Flow %
-2.3%
Top 10 Hldgs %
38.07%
Holding
11,570
New
1,564
Increased
4,281
Reduced
3,851
Closed
1,575

Top Buys

Rank Stock Value
1
MSFT icon
Microsoft
MSFT
+$114M
2
NVDA icon
NVIDIA
NVDA
+$85.9M
3
C icon
Citigroup
C
+$61.5M
4
BRK.B icon
Berkshire Hathaway Class B
BRK.B
+$45.5M
5
PFE icon
Pfizer
PFE
+$41.6M

Top Sells

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$467M
2
VOO icon
Vanguard S&P 500 ETF
VOO
+$71.2M
3
META icon
Meta Platforms (Facebook)
META
+$47.6M
4
INTC icon
Intel
INTC
+$41.9M
5
TSM icon
TSMC
TSM
+$35.9M

Sector Composition

Rank Sector Weight
1 Technology 0.51%
2 Financials 0.35%
3 Consumer Discretionary 0.3%
4 Healthcare 0.25%
5 Industrials 0.18%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
DNOW icon
10076
DNOW Inc
DNOW
$2.63B
– –
-4,505
Closed -$48.7K
DOG
10077
ProShares Short Dow30
DOG
$96.8M
– –
-35,581
Closed -$1.29M
DOYU
10078
PUT
DouYu International Holdings
DOYU
$136M
– –
-160
Closed -$1K
DPRO
10079
Draganfly
DPRO
$156M
$0 ﹤0.01%
7
-101
-94% -$2.25K
DPRO
10080
PUT
Draganfly
DPRO
$156M
– –
-100
Closed -$2K
DRD
10081
DRDGold
DRD
$1.82B
– –
-19,294
Closed -$111K
DRH icon
10082
Diamondrock Hospitality Co
DRH
$2.63B
$0 ﹤0.01%
72
-252
-78% -$2.22K
DRH icon
10083
PUT
Diamondrock Hospitality Co
DRH
$2.63B
– –
-11,900
Closed -$97K
DRVN icon
10084
PUT
Driven Brands
DRVN
$2.25B
– –
-700
Closed -$19K
DTE icon
10085
DTE Energy
DTE
$31.1B
– –
-2,763
Closed -$357K
DTEC icon
10086
ALPS Disruptive Technologies ETF
DTEC
$68.8M
– –
-709
Closed -$23K
DTIL icon
10087
CALL
Precision BioSciences
DTIL
$188M
– –
-220
Closed -$10K
DUK icon
10088
Duke Energy
DUK
$102B
– –
-27,808
Closed -$2.99M
DUOL icon
10089
Duolingo
DUOL
$5.7B
– –
-216
Closed -$21K
DV icon
10090
DoubleVerify
DV
$1.62B
– –
-331
Closed -$8.53K
DX
10091
Dynex Capital
DX
$2.99B
– –
-11,771
Closed -$184K
DXJ icon
10092
WisdomTree Japan Hedged Equity Fund
DXJ
$7.23B
– –
-5,598
Closed -$349K
DYN icon
10093
Dyne Therapeutics
DYN
$4.04B
– –
-37
Closed -$424
EB
10094
DELISTED
Eventbrite
EB
– –
-7,070
Closed -$59.5K
ECPG icon
10095
Encore Capital Group
ECPG
$1.93B
– –
-119
Closed -$6.84K
EDC icon
10096
Direxion Daily MSCI Emerging Markets Bull 3X ETF
EDC
$147M
– –
-2,858
Closed -$106K
EEMV icon
10097
iShares MSCI Emerging Markets Min Vol Factor ETF
EEMV
$3.45B
– –
-3,284
Closed -$182K
EFA icon
10098
iShares MSCI EAFE ETF
EFA
$76.4B
– –
-30,229
Closed -$1.89M
EFSC icon
10099
CALL
Enterprise Financial Services Corp
EFSC
$2.41B
– –
-100
Closed -$4K
EFV icon
10100
iShares MSCI EAFE Value ETF
EFV
$27.6B
– –
-73
Closed -$3K
402 403
404
405 406

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Simplex Trading's Q3 2022 Portfolio in Review

As of Q3 2022, Simplex Trading held 11,570 positions worth $88.5B, down 6% from $94.1B the previous quarter. Its ten largest holdings account for 38% of the portfolio.

Simplex Trading's Q3 2022 filing shows 1,564 new, 4,281 increased, 3,851 reduced and 1,575 closed positions. Its largest new stake was Microsoft: 432,062 shares worth $101M. The largest sale was Apple, an estimated $467M.

By sector, the portfolio is most concentrated in Technology at 0.51% of assets, down from 0.84% a quarter earlier, followed by Financials and Consumer Discretionary.

  • Simplex Trading's largest Q3 2022 buy was Microsoft: 432,062 shares worth $101M.
  • Simplex Trading added most to NVIDIA in Q3 2022, an estimated $85.9M increase.
  • Simplex Trading's biggest Q3 2022 reduction was Apple, cutting an estimated $467M.
  • Simplex Trading fully exited iShares Core S&P 500 ETF in Q3 2022, selling an estimated $34.3M.
  • Simplex Trading's ten largest holdings make up 38% of its $88.5B portfolio in Q3 2022.
  • Simplex Trading opened 1,564 new positions and closed 1,575 in Q3 2022.
  • Simplex Trading's portfolio value fell 6% quarter-over-quarter to $88.5B.

Based on Simplex Trading's 13F filing for Q3 2022, filed 4 Nov 2022.