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 |
Invesco QQQ Trust
QQQ
|
$41.7M |
| 2 |
Mastercard
MA
|
$33.6M |
| 3 |
Alibaba
BABA
|
$33.4M |
| 4 |
Apple
AAPL
|
$27.9M |
| 5 |
Alphabet (Google) Class C
GOOG
|
$26M |
Top Sells
| 1 |
JPMorgan Chase
JPM
|
$60M |
| 2 |
TSMC
TSM
|
$49.5M |
| 3 |
iShares Silver Trust
SLV
|
$26M |
| 4 |
Amazon
AMZN
|
$25.2M |
| 5 |
Boeing
BA
|
$22.1M |
Sector Composition
| 1 | Consumer Discretionary | 23.12% |
| 2 | Technology | 13.05% |
| 3 | Healthcare | 11.53% |
| 4 | Industrials | 7.38% |
| 5 | Communication Services | 6.71% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1
Tesla
TSLA
$1.08T
| $88.5M | 0.11% | 125,420 -5,549 | -4% | -$3.92M |
|
|
2
Amazon
AMZN
$2.44T
| $81.2M | 0.11% | 24,918 -7,741 | -24% | -$25.2M |
|
|
3
Invesco QQQ Trust
QQQ
$364B
| $70.6M | 0.09% | 224,897 +132,942 | +145% | +$41.7M |
|
|
4
Alphabet (Google) Class C
GOOG
$2.58T
| $38.1M | 0.05% | 21,732 +14,869 | +217% | +$26M |
|
|
5
Mastercard
MA
$538B
| $33.6M | 0.04% | +94,151 | New | +$33.6M |
|
|
6
Alibaba
BABA
$322B
| $33.4M | 0.04% | +143,630 | New | +$33.4M |
|
|
7
Apple
AAPL
$3.45T
| $29.9M | 0.04% | 225,647 +210,236 | +1,364% | +$27.9M |
|
8
SPDR S&P 500 ETF Trust
SPY
$658B
| $29.4M | 0.04% | 78,630 +63,307 | +413% | +$23.7M |
|
9
AutoZone
AZO
$70.2B
| $27.3M | 0.04% | 23,056 +3,682 | +19% | +$4.36M |
|
10
Walmart
WMT
$774B
| $21.4M | 0.03% | 148,207 +132,609 | +850% | +$19.1M |
|
11
Johnson & Johnson
JNJ
$427B
| $19M | 0.02% | 120,420 +40,062 | +50% | +$6.3M |
|
12
Utilities Select Sector SPDR Fund
XLU
$20.9B
| $17.6M | 0.02% | 280,022 +142,641 | +104% | +$8.94M |
|
13
XPeng
XPEV
$20B
| $17.4M | 0.02% | 406,271 +361,601 | +809% | +$15.5M |
|
14
Meta Platforms (Facebook)
META
$1.86T
| $17.2M | 0.02% | 63,140 -20,574 | -25% | -$5.62M |
|
|
15
Boeing
BA
$177B
| $16.8M | 0.02% | 78,256 -103,092 | -57% | -$22.1M |
|
16
Gilead Sciences
GILD
$140B
| $15.5M | 0.02% | +265,388 | New | +$15.5M |
|
17
CSX Corp
CSX
$60.6B
| $15.3M | 0.02% | +168,595 | New | +$15.3M |
|
18
General Motors
GM
$55.8B
| $14.8M | 0.02% | 355,642 +140,942 | +66% | +$5.87M |
|
19
Broadcom
AVGO
$1.4T
| $14.7M | 0.02% | 33,641 +7,328 | +28% | +$3.21M |
|
20
Newmont
NEM
$81.7B
| $13.1M | 0.02% | +218,976 | New | +$13.1M |
|
|
ALXN
21
DELISTED
Alexion Pharmaceuticals Inc
ALXN
| $12.8M | 0.02% | 82,137 +36,147 | +79% | +$5.65M |
|
|
22
Alphabet (Google) Class A
GOOGL
$2.57T
| $12.5M | 0.02% | 7,137 +6,807 | +2,063% | +$11.9M |
|
23
Lockheed Martin
LMT
$106B
| $11.9M | 0.02% | 33,653 +5,465 | +19% | +$1.94M |
|
24
Marvell Technology
MRVL
$54.2B
| $11.9M | 0.02% | 249,751 +150,593 | +152% | +$7.16M |
|
25
lululemon athletica
LULU
$24.2B
| $11.8M | 0.02% | 33,968 +19,756 | +139% | +$6.88M |
|