Simplex Trading Portfolio holdings
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.
Top Buys
| 1 |
Tesla
TSLA
|
$27.1M |
| 2 |
Netflix
NFLX
|
$24.7M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$20.1M |
| 4 |
TWX
Time Warner Inc
TWX
|
$18.3M |
| 5 |
Alibaba
BABA
|
$14.8M |
Top Sells
| 1 |
Amazon
AMZN
|
$71.9M |
| 2 |
Micron Technology
MU
|
$47.7M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$26.3M |
| 4 |
Boeing
BA
|
$21M |
| 5 |
Citigroup
C
|
$19.6M |
Sector Composition
| 1 | Consumer Discretionary | 15.64% |
| 2 | Communication Services | 14.16% |
| 3 | Technology | 12.46% |
| 4 | Financials | 10.94% |
| 5 | Healthcare | 10.33% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
76
Devon Energy
DVN
$22.3B
| $2.91M | 0.13% |
+91,621
| New | +$2.91M |
|
77
AstraZeneca
AZN
$255B
| $2.88M | 0.13% |
+82,264
| New | +$2.88M |
|
78
Trip.com Group
TCOM
$46.6B
| $2.87M | 0.13% |
61,542
-97,667
| -61% | -$4.55M |
|
|
X
79
DELISTED
US Steel
X
| $2.84M | 0.13% |
80,785
-16,575
| -17% | -$583K |
|
80
Consumers Staples Select Sector SPDR Fund
XLP
$15.8B
| $2.75M | 0.12% |
+52,252
| New | +$2.75M |
|
81
Franklin Covey
FC
$239M
| $2.69M | 0.12% |
99,916
+84,766
| +560% | +$2.28M |
|
82
Universal Display
OLED
$6.61B
| $2.68M | 0.12% |
26,539
+22,690
| +590% | +$2.29M |
|
83
Morgan Stanley
MS
$237B
| $2.66M | 0.12% |
49,336
-26,366
| -35% | -$1.42M |
|
84
Whirlpool
WHR
$5B
| $2.6M | 0.11% |
16,983
+13,584
| +400% | +$2.08M |
|
85
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
$304M
| $2.57M | 0.11% |
+70,898
| New | +$2.57M |
|
86
Illumina
ILMN
$15.2B
| $2.57M | 0.11% |
10,864
-1,918
| -15% | -$453K |
|
87
Dollar Tree
DLTR
$21.3B
| $2.56M | 0.11% |
26,997
+3,991
| +17% | +$379K |
|
88
eBay
EBAY
$41.2B
| $2.46M | 0.11% |
61,120
+9,466
| +18% | +$381K |
|
89
SAP
SAP
$316B
| $2.44M | 0.11% |
23,157
+22,090
| +2,070% | +$2.32M |
|
90
SPDR Euro Stoxx 50 ETF
FEZ
$4.5B
| $2.43M | 0.11% |
60,435
+25,743
| +74% | +$1.04M |
|
91
Lennar Class A
LEN
$34.7B
| $2.43M | 0.11% |
41,220
+15,581
| +61% | +$918K |
|
92
Dell
DELL
$83.9B
| $2.36M | 0.1% |
32,210
+31,435
| +4,056% | +$2.3M |
|
93
Madison Square Garden
MSGS
$4.71B
| $2.35M | 0.1% |
9,565
+8,364
| +696% | +$2.06M |
|
94
Fomento Económico Mexicano
FMX
$29B
| $2.32M | 0.1% |
25,336
+24,913
| +5,890% | +$2.28M |
|
95
Direxion Daily Small Cap Bull 3x Shares
TNA
$2.13B
| $2.29M | 0.1% |
+33,943
| New | +$2.29M |
|
96
Salesforce
CRM
$245B
| $2.21M | 0.1% |
+19,012
| New | +$2.21M |
|
|
SC
97
DELISTED
SANTANDER CONSUMER USA HOLDINGS INC
SC
| $2.19M | 0.1% |
134,578
+100,835
| +299% | +$1.64M |
|
98
Cigna
CI
$80.2B
| $2.18M | 0.1% |
12,973
+7,178
| +124% | +$1.2M |
|
99
Occidental Petroleum
OXY
$45.6B
| $2.15M | 0.09% |
+33,036
| New | +$2.15M |
|
|
ORBK
100
DELISTED
Orbotech Ltd
ORBK
| $2.13M | 0.09% |
34,306
+33,786
| +6,497% | +$2.1M |
|