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 | |
|---|---|---|---|---|---|---|
26
ASML
ASML
$292B
| $21.9M | 0.01% | 21,402 +14,368 | +204% | +$14.7M |
|
27
Coinbase
COIN
$78.2B
| $21.7M | 0.01% | +97,709 | New | +$21.7M |
|
28
Johnson & Johnson
JNJ
$427B
| $20.3M | 0.01% | +138,645 | New | +$20.3M |
|
29
lululemon athletica
LULU
$24.2B
| $19.7M | 0.01% | 65,959 +51,907 | +369% | +$15.5M |
|
30
CVS Health
CVS
$92.8B
| $19.6M | 0.01% | 332,122 +184,885 | +126% | +$10.9M |
|
31
Meta Platforms (Facebook)
META
$1.86T
| $18.7M | 0.01% | 37,167 -71,048 | -66% | -$35.8M |
|
32
Carnival Corp
CCL
$43.2B
| $17.8M | 0.01% | 948,317 -77,225 | -8% | -$1.45M |
|
33
Celsius Holdings
CELH
$16.2B
| $17.5M | 0.01% | +306,850 | New | +$17.5M |
|
34
Target
TGT
$43.6B
| $17.4M | 0.01% | 117,544 +111,854 | +1,966% | +$16.6M |
|
35
Fortinet
FTNT
$60.4B
| $17.2M | 0.01% | 285,618 +152,362 | +114% | +$9.18M |
|
36
Advanced Micro Devices
AMD
$264B
| $17.2M | 0.01% | 106,023 -137,241 | -56% | -$22.3M |
|
37
iShares Silver Trust
SLV
$19.6B
| $17.2M | 0.01% | 646,240 -822,887 | -56% | -$21.9M |
|
38
Novo Nordisk
NVO
$251B
| $16.8M | 0.01% | 117,367 -72,289 | -38% | -$10.3M |
|
39
Berkshire Hathaway Class B
BRK.B
$1.09T
| $16.5M | 0.01% | 40,510 -3,051 | -7% | -$1.24M |
|
40
McDonald's
MCD
$224B
| $16M | 0.01% | 62,671 +59,971 | +2,221% | +$15.3M |
|
41
Freeport-McMoran
FCX
$63.7B
| $15.9M | 0.01% | 326,831 +91,424 | +39% | +$4.44M |
|
42
United Airlines
UAL
$34B
| $15.8M | 0.01% | 323,713 +85,246 | +36% | +$4.15M |
|
43
Valero Energy
VLO
$47.2B
| $15.3M | 0.01% | 97,670 -61,754 | -39% | -$9.68M |
|
44
JD.com
JD
$44.1B
| $15.1M | 0.01% | 583,923 -1,072,091 | -65% | -$27.7M |
|
45
Dell
DELL
$82.6B
| $14.7M | 0.01% | 106,560 -22,577 | -17% | -$3.11M |
|
46
Booking.com
BKNG
$181B
| $14.4M | 0.01% | 3,638 -2,894 | -44% | -$11.5M |
|
47
Twilio
TWLO
$16.2B
| $13.7M | 0.01% | 241,571 +160,657 | +199% | +$9.13M |
|
48
Direxion Daily Financial Bull 3x Shares
FAS
$2.74B
| $13.3M | 0.01% | 131,390 +2,526 | +2% | +$255K |
|
49
Affirm
AFRM
$28.8B
| $12.7M | 0.01% | 419,737 +349,176 | +495% | +$10.5M |
|
50
Palo Alto Networks
PANW
$127B
| $12.6M | 0.01% | 37,166 +32,570 | +709% | +$11M |
|