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 | |
|---|---|---|---|---|---|---|
26
Booking.com
BKNG
$181B
| $11.7M | 0.02% |
5,253
+4,275
| +437% | +$9.52M |
|
27
Biogen
BIIB
$20.8B
| $11.2M | 0.01% |
+45,903
| New | +$11.2M |
|
28
VanEck Gold Miners ETF
GDX
$19.6B
| $11.2M | 0.01% |
310,062
+51,829
| +20% | +$1.87M |
|
29
AbbVie
ABBV
$374B
| $11.2M | 0.01% |
104,098
+103,998
| +103,998% | +$11.1M |
|
30
Li Auto
LI
$24.4B
| $11.1M | 0.01% |
384,516
+274,237
| +249% | +$7.91M |
|
31
AstraZeneca
AZN
$255B
| $11.1M | 0.01% |
221,533
+136,909
| +162% | +$6.84M |
|
32
Delta Air Lines
DAL
$40B
| $10.9M | 0.01% |
270,816
+179,903
| +198% | +$7.23M |
|
33
FedEx
FDX
$53.2B
| $10.9M | 0.01% |
+41,802
| New | +$10.9M |
|
34
Walt Disney
DIS
$211B
| $10.8M | 0.01% |
59,441
+59,091
| +16,883% | +$10.7M |
|
35
SPDR S&P Oil & Gas Exploration & Production ETF
XOP
$1.86B
| $10.8M | 0.01% |
183,825
+147,645
| +408% | +$8.64M |
|
36
Strategy Inc Common Stock Class A
MSTR
$93.6B
| $10.7M | 0.01% |
27,610
+19,453
| +238% | +$7.56M |
|
37
NIO
NIO
$14.2B
| $10.5M | 0.01% |
215,619
+19,147
| +10% | +$933K |
|
38
Medtronic
MDT
$118B
| $10.1M | 0.01% |
85,851
+69,528
| +426% | +$8.14M |
|
|
B
39
Barrick Mining Corporation
B
$46.3B
| $10M | 0.01% |
440,033
+27,180
| +7% | +$619K |
|
40
Teladoc Health
TDOC
$1.37B
| $9.91M | 0.01% |
49,563
-6,733
| -12% | -$1.35M |
|
41
Berkshire Hathaway Class B
BRK.B
$1.08T
| $9.87M | 0.01% |
42,575
-1,158
| -3% | -$268K |
|
42
Direxion Daily S&P 500 Bull 3x Shares
SPXL
$5.41B
| $9.82M | 0.01% |
135,965
+121,560
| +844% | +$8.78M |
|
43
Royal Caribbean
RCL
$96.4B
| $9.79M | 0.01% |
131,060
+19,321
| +17% | +$1.44M |
|
44
Electronic Arts
EA
$42B
| $9.05M | 0.01% |
63,032
+23,317
| +59% | +$3.35M |
|
45
Shopify
SHOP
$182B
| $8.99M | 0.01% |
7,938
-4,798
| -38% | -$5.43M |
|
46
McDonald's
MCD
$226B
| $8.41M | 0.01% |
39,193
+26,841
| +217% | +$5.76M |
|
47
Consumers Staples Select Sector SPDR Fund
XLP
$15.8B
| $8.4M | 0.01% |
+124,565
| New | +$8.4M |
|
48
iShares China Large-Cap ETF
FXI
$6.65B
| $8.05M | 0.01% |
173,380
+144,612
| +503% | +$6.71M |
|
49
United States Oil Fund
USO
$967M
| $8.04M | 0.01% |
243,474
-101,252
| -29% | -$3.34M |
|
50
Citigroup
C
$175B
| $7.87M | 0.01% |
127,574
-196,789
| -61% | -$12.1M |
|