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 |
AMC Entertainment Holdings
AMC
|
$84.2M |
| 2 |
NVIDIA
NVDA
|
$35.3M |
| 3 |
AT&T
T
|
$28.5M |
| 4 |
Micron Technology
MU
|
$23.1M |
| 5 |
Baidu
BIDU
|
$22.7M |
Top Sells
| 1 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
$38.7M |
| 2 |
Palantir
PLTR
|
$29.3M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$26.2M |
| 4 |
PARA
Paramount Global Class B
PARA
|
$21.7M |
| 5 |
Exxon Mobil
XOM
|
$18M |
Sector Composition
| 1 | Technology | 17.69% |
| 2 | Consumer Discretionary | 14.79% |
| 3 | Communication Services | 10.15% |
| 4 | Healthcare | 9.69% |
| 5 | Financials | 9.42% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
51
TAL Education Group
TAL
$6.46B
| $9.07M | 0.01% | 359,494 +313,358 | +679% | +$7.91M |
|
52
Pinduoduo
PDD
$171B
| $8.98M | 0.01% | 70,713 -65,960 | -48% | -$8.38M |
|
53
American Tower
AMT
$95.5B
| $8.89M | 0.01% | 32,915 +8,136 | +33% | +$2.2M |
|
54
Marriott International Class A Common Stock
MAR
$72.7B
| $8.79M | 0.01% | 64,382 +38,784 | +152% | +$5.29M |
|
55
SPDR S&P 500 ETF Trust
SPY
$658B
| $8.76M | 0.01% | 20,467 +5,749 | +39% | +$2.46M |
|
56
Cleveland-Cliffs
CLF
$5.32B
| $8.71M | 0.01% | +403,897 | New | +$8.71M |
|
57
BP
BP
$90.8B
| $8.63M | 0.01% | 326,715 +139,420 | +74% | +$3.68M |
|
58
iShares US Real Estate ETF
IYR
$3.76B
| $8.29M | 0.01% | 81,307 +69,636 | +597% | +$7.1M |
|
|
ATVI
59
DELISTED
Activision Blizzard Inc.
ATVI
| $8.24M | 0.01% | 86,371 +63,003 | +270% | +$6.01M |
|
60
Datadog
DDOG
$47.7B
| $8.12M | 0.01% | 78,011 +16,177 | +26% | +$1.68M |
|
61
BlackBerry
BB
$2.28B
| $7.93M | 0.01% | 649,282 +338,382 | +109% | +$4.13M |
|
62
Mercado Libre
MELI
$125B
| $7.91M | 0.01% | 5,078 +2,785 | +121% | +$4.34M |
|
63
Simon Property Group
SPG
$59B
| $7.87M | 0.01% | 60,354 -6,905 | -10% | -$901K |
|
64
SPDR S&P Oil & Gas Exploration & Production ETF
XOP
$1.9B
| $7.86M | 0.01% | 81,297 +80,860 | +18,503% | +$7.82M |
|
65
IBM
IBM
$227B
| $7.74M | 0.01% | 52,809 +42,946 | +435% | +$6.3M |
|
66
Airbnb
ABNB
$79.9B
| $7.72M | 0.01% | 50,379 +44,180 | +713% | +$6.77M |
|
67
Aon
AON
$79.1B
| $7.62M | 0.01% | 31,923 +23,812 | +294% | +$5.68M |
|
68
Altria Group
MO
$113B
| $7.59M | 0.01% | 159,197 -45,341 | -22% | -$2.16M |
|
|
69
SPDR Dow Jones Industrial Average ETF Trust
DIA
$39.9B
| $7.55M | 0.01% | 21,896 -75,857 | -78% | -$26.2M |
|
70
VanEck Gold Miners ETF
GDX
$19B
| $7.55M | 0.01% | 222,118 -362,314 | -62% | -$12.3M |
|
71
Morgan Stanley
MS
$240B
| $7.54M | 0.01% | +82,188 | New | +$7.54M |
|
72
Abits Group
ABTS
$8.91M
| $7.52M | 0.01% | +337,513 | New | +$7.52M |
|
73
Norwegian Cruise Line
NCLH
$11.2B
| $7.41M | 0.01% | 251,840 -256,483 | -50% | -$7.54M |
|
74
Moderna
MRNA
$9.37B
| $7.23M | 0.01% | +30,775 | New | +$7.23M |
|
|
B
75
Barrick Mining Corporation
B
$45.4B
| $7.18M | 0.01% | 347,183 -185,853 | -35% | -$3.84M |
|