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 |
NVIDIA
NVDA
|
$141M |
| 2 |
Citigroup
C
|
$77M |
| 3 |
Broadcom
AVGO
|
$53M |
| 4 |
Pinduoduo
PDD
|
$49.7M |
| 5 |
Intel
INTC
|
$44.5M |
Top Sells
| 1 |
Energy Select Sector SPDR Fund
XLE
|
$92.5M |
| 2 |
Pfizer
PFE
|
$67.5M |
| 3 |
Boeing
BA
|
$66.7M |
| 4 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
$44.9M |
| 5 |
PayPal
PYPL
|
$44.4M |
Sector Composition
| 1 | Technology | 27.91% |
| 2 | Consumer Discretionary | 14.92% |
| 3 | Healthcare | 10.74% |
| 4 | Financials | 10.11% |
| 5 | Materials | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
51
SoFi Technologies
SOFI
$30.6B
| $12M | 0.01% | 1,817,798 -288,581 | -14% | -$1.91M |
|
52
International Paper
IP
$26.2B
| $11.8M | 0.01% | 273,721 +211,508 | +340% | +$9.13M |
|
53
Invesco QQQ Trust
QQQ
$364B
| $11.5M | 0.01% | 24,028 -2,293 | -9% | -$1.1M |
|
54
Iris Energy
IREN
$6.4B
| $11.4M | 0.01% | 1,008,131 +562,979 | +126% | +$6.36M |
|
55
Southwest Airlines
LUV
$17.3B
| $11M | 0.01% | 384,844 +341,323 | +784% | +$9.76M |
|
56
3M
MMM
$82.8B
| $10.5M | 0.01% | 103,025 -87,499 | -46% | -$8.94M |
|
57
Gilead Sciences
GILD
$140B
| $10.5M | 0.01% | 152,442 +51,199 | +51% | +$3.51M |
|
58
C3.ai
AI
$2.33B
| $10.4M | 0.01% | 360,674 -136,456 | -27% | -$3.95M |
|
59
Roku
ROKU
$14.2B
| $10.2M | 0.01% | 170,087 +109,092 | +179% | +$6.54M |
|
60
Sarepta Therapeutics
SRPT
$1.78B
| $10.1M | 0.01% | 63,784 -2,996 | -4% | -$473K |
|
61
PENN Entertainment
PENN
$2.95B
| $10M | 0.01% | +517,446 | New | +$10M |
|
|
PARA
62
DELISTED
Paramount Global Class B
PARA
| $9.73M | 0.01% | 936,310 +180,294 | +24% | +$1.87M |
|
63
Best Buy
BBY
$15.6B
| $9.64M | 0.01% | 114,394 +59,891 | +110% | +$5.05M |
|
64
Bank of New York Mellon
BK
$74.5B
| $9.31M | 0.01% | 155,531 +38,481 | +33% | +$2.3M |
|
65
Analog Devices
ADI
$124B
| $8.92M | 0.01% | +39,069 | New | +$8.92M |
|
66
Air Products & Chemicals
APD
$65.5B
| $8.89M | 0.01% | 34,448 +26,610 | +339% | +$6.87M |
|
67
Wynn Resorts
WYNN
$13.2B
| $8.86M | 0.01% | 99,037 +72,622 | +275% | +$6.5M |
|
68
Hewlett Packard
HPE
$29.6B
| $8.78M | 0.01% | 414,679 +293,768 | +243% | +$6.22M |
|
69
Seagate
STX
$35.6B
| $8.77M | 0.01% | +84,896 | New | +$8.77M |
|
70
Lamb Weston
LW
$8.02B
| $8.71M | 0.01% | 103,628 +68,597 | +196% | +$5.77M |
|
71
CleanSpark
CLSK
$2.66B
| $8.56M | 0.01% | 536,880 +207,596 | +63% | +$3.31M |
|
72
American Airlines Group
AAL
$8.82B
| $8.55M | 0.01% | +754,745 | New | +$8.55M |
|
|
73
Energy Select Sector SPDR Fund
XLE
$27.6B
| $8.35M | 0.01% | 91,589 -1,014,377 | -92% | -$92.5M |
|
74
Energy Transfer Partners
ET
$60.8B
| $8.17M | 0.01% | 503,554 -42,865 | -8% | -$695K |
|
75
Vale
VALE
$43.9B
| $8.14M | 0.01% | 728,549 -269,066 | -27% | -$3.01M |
|