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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
+0.54%
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
$1.19B
AUM Growth
+$333M
Cap. Flow
+$279M
Cap. Flow %
23.35%
Top 10 Hldgs %
20.47%
Holding
6,639
New
1,607
Increased
1,829
Reduced
1,589
Closed
1,438

Top Buys

Rank Stock Value
1
GOOG icon
Alphabet (Google) Class C
GOOG
+$54.6M
2
AAPL icon
Apple
AAPL
+$29.1M
3
META icon
Meta Platforms (Facebook)
META
+$15.7M
4
IBM icon
IBM
IBM
+$13.8M
5
BIDU icon
Baidu
BIDU
+$10.6M

Top Sells

Rank Stock Value
1
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$10.1M
2
MCD icon
McDonald's
MCD
+$8.46M
3
RL icon
Ralph Lauren
RL
+$5.36M
4
INTC icon
Intel
INTC
+$5.04M
5
WBA
Walgreens Boots Alliance
WBA
+$4.76M

Sector Composition

Rank Sector Weight
1 Communication Services 14.27%
2 Technology 10.3%
3 Healthcare 7.76%
4 Consumer Discretionary 6.32%
5 Financials 5.18%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
CSGS
4251
CALL
DELISTED
CSG Systems International
CSGS
$2K ﹤0.01%
+10
New +$308
CSV icon
4252
CALL
Carriage Services
CSV
$640M
$2K ﹤0.01%
32
– –
CVGW
4253
PUT
DELISTED
Calavo Growers
CVGW
$2K ﹤0.01%
+51
New +$2.65K
CVEO icon
4254
PUT
Civeo
CVEO
$375M
$2K ﹤0.01%
1
-5
-83% -$225
CVI icon
4255
PUT
CVR Energy
CVI
$3.43B
$2K ﹤0.01%
+24
New +$946
CW icon
4256
CALL
Curtiss-Wright
CW
$26.9B
$2K ﹤0.01%
6
-5
-45% -$369
D icon
4257
CALL
Dominion Energy
D
$62.4B
$2K ﹤0.01%
144
+81
+129% +$5.7K
DBI icon
4258
CALL
Designer Brands
DBI
$325M
$2K ﹤0.01%
131
+118
+908% +$4.21K
DBO icon
4259
Invesco DB Oil Fund
DBO
$374M
$2K ﹤0.01%
+174
New +$2.56K
DCO icon
4260
PUT
Ducommun
DCO
$2.72B
$2K ﹤0.01%
10
+4
+67% +$107
DHC
4261
CALL
Diversified Healthcare Trust
DHC
$2.25B
$2K ﹤0.01%
5
-25
-83% -$495
DKL icon
4262
CALL
Delek Logistics
DKL
$3.07B
$2K ﹤0.01%
10
-54
-84% -$2.36K
DNOW icon
4263
CALL
DNOW Inc
DNOW
$2.55B
$2K ﹤0.01%
128
-3
-2% -$69
DOV icon
4264
CALL
Dover
DOV
$27.3B
$2K ﹤0.01%
12
-61
-84% -$3.63K
ECPG icon
4265
Encore Capital Group
ECPG
$2.03B
$2K ﹤0.01%
+50
New +$2.05K
ECPG icon
4266
PUT
Encore Capital Group
ECPG
$2.03B
$2K ﹤0.01%
+20
New +$820
EGY icon
4267
PUT
Vaalco Energy
EGY
$548M
$2K ﹤0.01%
8
-20
-71% -$47
ENOV icon
4268
PUT
Enovis
ENOV
$1.69B
$2K ﹤0.01%
+7
New +$593
ENTA icon
4269
PUT
Enanta Pharmaceuticals
ENTA
$366M
$2K ﹤0.01%
13
– –
EPM icon
4270
Evolution Petroleum
EPM
$130M
$2K ﹤0.01%
+400
New +$2.73K
EPR icon
4271
PUT
EPR Properties
EPR
$4.93B
$2K ﹤0.01%
7
-6
-46% -$349
EPV icon
4272
ProShares UltraShort FTSE Europe
EPV
$11.4M
$2K ﹤0.01%
7
-57
-89% -$14.7K
EQNR icon
4273
PUT
Equinor
EQNR
$91B
$2K ﹤0.01%
13
+8
+160% +$155
ETR icon
4274
CALL
Entergy
ETR
$53B
$2K ﹤0.01%
190
+6
+3% +$225
EVRI
4275
CALL
DELISTED
Everi Holdings
EVRI
$2K ﹤0.01%
+33
New +$258
169 170
171
172 173

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Simplex Trading's Q2 2015 Portfolio in Review

As of Q2 2015, Simplex Trading held 6,639 positions worth $1.19B, up 39% from $860M the previous quarter. Its ten largest holdings account for 20% of the portfolio.

Simplex Trading deployed $279M of net new capital in Q2 2015, opening 1,607 new positions and adding to 1,829 existing holdings. Its largest new stake was IBM: 85,948 shares worth $13.4M.

By sector, the portfolio is most concentrated in Communication Services at 14% of assets, up from 7.8% a quarter earlier, followed by Technology and Healthcare.

On the sell side, the largest reduction was Intel, an estimated $5.04M trimmed.

  • Simplex Trading's largest Q2 2015 buy was IBM: 85,948 shares worth $13.4M.
  • Simplex Trading added most to Alphabet (Google) Class C in Q2 2015, an estimated $54.6M increase.
  • Simplex Trading's biggest Q2 2015 reduction was Intel, cutting an estimated $5.04M.
  • Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2015, selling an estimated $10.1M.
  • Simplex Trading's ten largest holdings make up 20% of its $1.19B portfolio in Q2 2015.
  • Simplex Trading opened 1,607 new positions and closed 1,438 in Q2 2015.
  • Simplex Trading's portfolio value rose 39% quarter-over-quarter to $1.19B.

Based on Simplex Trading's 13F filing for Q2 2015, filed 8 Jul 2015.