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 | |
|---|---|---|---|---|---|---|
|
1
NVIDIA
NVDA
$4.24T
| $144M | 0.09% | 1,167,780 +1,142,975 | +4,608% | +$141M |
|
|
2
Broadcom
AVGO
$1.4T
| $95.4M | 0.06% | 59,399 +32,982 | +125% | +$53M |
|
|
3
Intel
INTC
$107B
| $86.7M | 0.05% | 2,799,750 +1,437,682 | +106% | +$44.5M |
|
|
4
Citigroup
C
$178B
| $77M | 0.05% | +1,213,247 | New | +$77M |
|
|
5
Pfizer
PFE
$141B
| $61.4M | 0.04% | 2,195,260 -2,410,725 | -52% | -$67.5M |
|
6
TSMC
TSM
$1.2T
| $60.5M | 0.04% | 348,151 -76,136 | -18% | -$13.2M |
|
7
Alibaba
BABA
$322B
| $57.5M | 0.04% | 799,246 +168,820 | +27% | +$12.2M |
|
|
8
Pinduoduo
PDD
$171B
| $49.7M | 0.03% | +374,085 | New | +$49.7M |
|
|
B
9
Barrick Mining Corporation
B
$45.4B
| $43.8M | 0.03% | 2,628,449 +954,993 | +57% | +$15.9M |
|
10
Amazon
AMZN
$2.44T
| $36.5M | 0.02% | +188,667 | New | +$36.5M |
|
11
Super Micro Computer
SMCI
$24.7B
| $34.9M | 0.02% | +42,632 | New | +$34.9M |
|
12
Starbucks
SBUX
$100B
| $34.7M | 0.02% | 446,246 +58,222 | +15% | +$4.53M |
|
13
Qualcomm
QCOM
$173B
| $34.7M | 0.02% | +173,989 | New | +$34.7M |
|
14
Newmont
NEM
$81.7B
| $34.5M | 0.02% | 824,151 -29,657 | -3% | -$1.24M |
|
15
Snowflake
SNOW
$79.6B
| $32.7M | 0.02% | 242,389 +136,459 | +129% | +$18.4M |
|
16
SPDR Gold Trust
GLD
$107B
| $32.7M | 0.02% | +152,011 | New | +$32.7M |
|
17
Baidu
BIDU
$32.8B
| $32.5M | 0.02% | 375,303 -14,733 | -4% | -$1.27M |
|
18
iShares MSCI Brazil ETF
EWZ
$5.45B
| $29.7M | 0.02% | 1,084,950 +927,703 | +590% | +$25.4M |
|
19
Marathon Digital Holdings
MARA
$5.92B
| $27.1M | 0.02% | 1,364,416 -96,286 | -7% | -$1.91M |
|
20
KraneShares CSI China Internet ETF
KWEB
$8.49B
| $26.5M | 0.02% | 981,118 -1,092,007 | -53% | -$29.5M |
|
21
Cisco
CSCO
$274B
| $24.2M | 0.01% | 508,584 -125,654 | -20% | -$5.97M |
|
22
Arm
ARM
$147B
| $23.8M | 0.01% | +145,197 | New | +$23.8M |
|
23
Robinhood
HOOD
$92.4B
| $23.4M | 0.01% | 1,029,854 +394,396 | +62% | +$8.96M |
|
24
Bristol-Myers Squibb
BMY
$96B
| $23.2M | 0.01% | 558,011 +54,263 | +11% | +$2.25M |
|
25
UnitedHealth
UNH
$281B
| $22M | 0.01% | 43,158 +9,433 | +28% | +$4.8M |
|