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
|
$45.7M |
| 2 |
Walmart
WMT
|
$45.2M |
| 3 |
VanEck Oil Services ETF
OIH
|
$34.2M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$33.2M |
| 5 |
Citigroup
C
|
$32.7M |
Top Sells
| 1 |
Amazon
AMZN
|
$164M |
| 2 |
Invesco QQQ Trust
QQQ
|
$111M |
| 3 |
NVIDIA
NVDA
|
$77.7M |
| 4 |
Meta Platforms (Facebook)
META
|
$60.9M |
| 5 |
Procter & Gamble
PG
|
$38.8M |
Sector Composition
| 1 | Technology | 21.73% |
| 2 | Consumer Discretionary | 10.23% |
| 3 | Healthcare | 8.76% |
| 4 | Industrials | 7.59% |
| 5 | Communication Services | 6.56% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
1
iShares 20+ Year Treasury Bond ETF
TLT
$47.8B
| $50.1M | 0.04% | 471,278 +312,157 | +196% | +$33.2M |
|
|
2
Apple
AAPL
$3.45T
| $48.7M | 0.04% | 295,137 +277,137 | +1,540% | +$45.7M |
|
|
3
Walmart
WMT
$774B
| $45.2M | 0.04% | +306,319 | New | +$45.2M |
|
4
Utilities Select Sector SPDR Fund
XLU
$20.9B
| $34.5M | 0.03% | 509,335 +256,758 | +102% | +$17.4M |
|
|
5
VanEck Oil Services ETF
OIH
$886M
| $34.2M | 0.03% | +123,252 | New | +$34.2M |
|
|
6
Citigroup
C
$178B
| $32.7M | 0.03% | 698,379 +697,379 | +69,738% | +$32.7M |
|
7
Adobe
ADBE
$151B
| $32.6M | 0.03% | 84,620 +68,423 | +422% | +$26.4M |
|
8
Starbucks
SBUX
$100B
| $31.7M | 0.03% | +303,977 | New | +$31.7M |
|
9
KraneShares CSI China Internet ETF
KWEB
$8.49B
| $30.6M | 0.03% | 982,110 +730,387 | +290% | +$22.8M |
|
10
SPDR Dow Jones Industrial Average ETF Trust
DIA
$39.9B
| $28.6M | 0.03% | 85,834 +85,734 | +85,734% | +$28.5M |
|
11
Alibaba
BABA
$322B
| $27.5M | 0.02% | 268,719 +6,128 | +2% | +$626K |
|
12
Energy Select Sector SPDR Fund
XLE
$27.6B
| $27.3M | 0.02% | +329,052 | New | +$27.3M |
|
13
Enphase Energy
ENPH
$4.93B
| $27.2M | 0.02% | +129,302 | New | +$27.2M |
|
14
Intuit
INTU
$186B
| $26.2M | 0.02% | 58,845 +49,010 | +498% | +$21.8M |
|
15
JD.com
JD
$44.1B
| $26.1M | 0.02% | +594,625 | New | +$26.1M |
|
16
UnitedHealth
UNH
$281B
| $24.7M | 0.02% | +52,281 | New | +$24.7M |
|
17
Pinduoduo
PDD
$171B
| $23.7M | 0.02% | 312,591 +312,391 | +156,196% | +$23.7M |
|
18
Verizon
VZ
$186B
| $23.4M | 0.02% | 602,014 +228,197 | +61% | +$8.87M |
|
19
iShares MSCI Emerging Markets ETF
EEM
$19B
| $22.3M | 0.02% | 566,385 -366,371 | -39% | -$14.5M |
|
20
Deere & Co
DE
$129B
| $20.4M | 0.02% | +49,409 | New | +$20.4M |
|
21
General Dynamics
GD
$87.3B
| $19.5M | 0.02% | 85,462 +28,789 | +51% | +$6.57M |
|
22
Oracle
ORCL
$635B
| $19.1M | 0.02% | 205,826 -50,105 | -20% | -$4.66M |
|
23
Zoom
ZM
$24.4B
| $19M | 0.02% | 257,562 +83,135 | +48% | +$6.14M |
|
24
Technology Select Sector SPDR Fund
XLK
$83.9B
| $18.6M | 0.02% | 123,307 +119,807 | +3,423% | +$18.1M |
|
25
Union Pacific
UNP
$133B
| $18M | 0.02% | +89,395 | New | +$18M |
|