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 |
Apple
AAPL
|
$35.2M |
| 2 |
Micron Technology
MU
|
$32.9M |
| 3 |
Berkshire Hathaway Class B
BRK.B
|
$29.5M |
| 4 |
NVIDIA
NVDA
|
$22.9M |
| 5 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$22M |
Top Sells
| 1 |
TWX
Time Warner Inc
TWX
|
$34.8M |
| 2 |
Amazon
AMZN
|
$33.4M |
| 3 |
Tesla
TSLA
|
$19.8M |
| 4 |
Netflix
NFLX
|
$17.7M |
| 5 |
TWTR
Twitter, Inc.
TWTR
|
$13.5M |
Sector Composition
| 1 | Technology | 20.43% |
| 2 | Consumer Discretionary | 15.24% |
| 3 | Communication Services | 12% |
| 4 | Financials | 10.18% |
| 5 | Industrials | 9.87% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
51
Bristol-Myers Squibb
BMY
$96.7B
| $5.67M | 0.02% |
102,411
-14,867
| -13% | -$823K |
|
52
Phillips 66
PSX
$52.8B
| $5.45M | 0.02% |
+48,518
| New | +$5.45M |
|
53
Keurig Dr Pepper
KDP
$39.5B
| $5.45M | 0.02% |
+44,633
| New | +$5.45M |
|
54
Industrial Select Sector SPDR Fund
XLI
$23B
| $5.41M | 0.02% |
75,505
+66,318
| +722% | +$4.75M |
|
55
Intuitive Surgical
ISRG
$158B
| $5.4M | 0.02% |
+11,289
| New | +$5.4M |
|
56
MGM Resorts International
MGM
$10.4B
| $5.14M | 0.02% |
+176,944
| New | +$5.14M |
|
57
Financial Select Sector SPDR Fund
XLF
$53.6B
| $4.9M | 0.02% |
+184,278
| New | +$4.9M |
|
58
Diamondback Energy
FANG
$41.2B
| $4.69M | 0.02% |
+35,659
| New | +$4.69M |
|
59
Palo Alto Networks
PANW
$128B
| $4.64M | 0.02% |
22,568
+6,182
| +38% | +$1.27M |
|
60
Devon Energy
DVN
$22.3B
| $4.49M | 0.02% |
102,184
+10,563
| +12% | +$464K |
|
61
Honeywell
HON
$136B
| $4.44M | 0.02% |
30,805
+9,427
| +44% | +$1.36M |
|
62
American Airlines Group
AAL
$8.87B
| $4.4M | 0.02% |
+115,993
| New | +$4.4M |
|
63
Western Digital
WDC
$29.8B
| $4.32M | 0.02% |
+55,817
| New | +$4.32M |
|
64
Edwards Lifesciences
EW
$47.7B
| $4.31M | 0.02% |
+29,604
| New | +$4.31M |
|
65
Workday
WDAY
$62.3B
| $4.23M | 0.02% |
34,909
+34,296
| +5,595% | +$4.15M |
|
66
American International
AIG
$45.1B
| $4.22M | 0.02% |
79,658
-108,351
| -58% | -$5.74M |
|
67
New Oriental
EDU
$7.98B
| $4.17M | 0.02% |
44,005
+4,021
| +10% | +$381K |
|
|
ANDV
68
DELISTED
Andeavor
ANDV
| $4.16M | 0.02% |
31,694
+16,016
| +102% | +$2.1M |
|
69
General Motors
GM
$55B
| $4.01M | 0.02% |
101,726
-17,384
| -15% | -$685K |
|
70
Northrop Grumman
NOC
$83.2B
| $4.01M | 0.02% |
13,022
+12,864
| +8,142% | +$3.96M |
|
|
CIT
71
DELISTED
CIT Group Inc.
CIT
| $3.98M | 0.02% |
+79,001
| New | +$3.98M |
|
72
Direxion Daily Small Cap Bull 3x Shares
TNA
$2.13B
| $3.98M | 0.02% |
48,396
+14,453
| +43% | +$1.19M |
|
73
Align Technology
ALGN
$9.59B
| $3.84M | 0.02% |
+11,238
| New | +$3.84M |
|
74
Electronic Arts
EA
$42B
| $3.83M | 0.02% |
+27,144
| New | +$3.83M |
|
75
Dell
DELL
$83.9B
| $3.81M | 0.01% |
45,093
+12,883
| +40% | +$1.09M |
|