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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
CUZ icon
9051
Cousins Properties
CUZ
$5.29B
$3K ﹤0.01%
129
– –
CVGW
9052
PUT
DELISTED
Calavo Growers
CVGW
$3K ﹤0.01%
100
-200
-67% -$8.03K
DAVE icon
9053
PUT
Dave Inc
DAVE
$5.12B
$3K ﹤0.01%
275
+228
+485% +$4.21K
DFAR icon
9054
Dimensional US Real Estate ETF
DFAR
$1.82B
$3K ﹤0.01%
+178
New +$4.22K
DFIN icon
9055
CALL
Donnelley Financial Solutions
DFIN
$1.21B
$3K ﹤0.01%
+100
New +$3.75K
DGICA icon
9056
Donegal Group Class A
DGICA
$695M
$3K ﹤0.01%
295
-144
-33% -$2.17K
DH icon
9057
CALL
Definitive Healthcare
DH
$72.1M
$3K ﹤0.01%
200
+100
+100% +$2.2K
DHC
9058
Diversified Healthcare Trust
DHC
$2.26B
$3K ﹤0.01%
3,366
-1,325
-28% -$2.12K
DNLI icon
9059
PUT
Denali Therapeutics
DNLI
$3.67B
$3K ﹤0.01%
100
-100
-50% -$3.25K
ENTX icon
9060
PUT
Entera Bio
ENTX
$101M
$3K ﹤0.01%
+3,300
New +$4.98K
ESAB icon
9061
PUT
ESAB
ESAB
$5.25B
$3K ﹤0.01%
100
– –
EVCM icon
9062
PUT
EverCommerce
EVCM
$2.05B
$3K ﹤0.01%
+300
New +$3.4K
EVTC icon
9063
CALL
Evertec
EVTC
$1.83B
$3K ﹤0.01%
+100
New +$3.51K
FAN icon
9064
CALL
First Trust Global Wind Energy ETF
FAN
$281M
$3K ﹤0.01%
200
-100
-33% -$1.77K
FHI icon
9065
PUT
Federated Hermes
FHI
$4.4B
$3K ﹤0.01%
100
– –
FTFT icon
9066
CALL
Future FinTech Group
FTFT
$2.2M
$3K ﹤0.01%
9
+1
+13% +$374
FTFT icon
9067
Future FinTech Group
FTFT
$2.2M
$3K ﹤0.01%
9
+7
+350% +$2.62K
FUL icon
9068
H.B. Fuller
FUL
$3B
$3K ﹤0.01%
+53
New +$3.38K
GCO icon
9069
CALL
Genesco
GCO
$396M
$3K ﹤0.01%
100
-400
-80% -$21.4K
GLBS icon
9070
PUT
Globus Maritime Ltd
GLBS
$65M
$3K ﹤0.01%
2,400
-17,600
-88% -$28.3K
GMAB icon
9071
CALL
Genmab
GMAB
$17.7B
$3K ﹤0.01%
100
– –
GORO icon
9072
PUT
Goldgroup Mining Inc.
GORO
$151M
$3K ﹤0.01%
1,900
+800
+73% +$1.36K
GRFS
9073
PUT
Grifois
GRFS
$5.16B
$3K ﹤0.01%
600
-13,600
-96% -$121K
GTIM icon
9074
PUT
Good Times Restaurants
GTIM
$14.7M
$3K ﹤0.01%
+1,500
New +$4.39K
GVA icon
9075
Granite Construction
GVA
$5.45B
$3K ﹤0.01%
+144
New +$4.25K
361 362
363
364 365

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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.