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 |
Boeing
BA
|
$49.5M |
| 2 |
Pinduoduo
PDD
|
$45.3M |
| 3 |
Microsoft
MSFT
|
$42.5M |
| 4 |
Apple
AAPL
|
$33.3M |
| 5 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
$25.4M |
Top Sells
| 1 |
Broadcom
AVGO
|
$95.4M |
| 2 |
Citigroup
C
|
$57.9M |
| 3 |
Pfizer
PFE
|
$55.9M |
| 4 |
TSMC
TSM
|
$40.4M |
| 5 |
Starbucks
SBUX
|
$40.4M |
Sector Composition
| 1 | Technology | 23.11% |
| 2 | Consumer Discretionary | 16.53% |
| 3 | Healthcare | 8.58% |
| 4 | Industrials | 7.58% |
| 5 | Financials | 7.29% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
26
Visa
V
$683B
| $18.2M | 0.01% | +66,210 | New | +$18.2M |
|
27
Bristol-Myers Squibb
BMY
$96B
| $18.2M | 0.01% | 351,086 -206,925 | -37% | -$10.7M |
|
28
Walt Disney
DIS
$213B
| $18.1M | 0.01% | 188,224 +128,708 | +216% | +$12.4M |
|
|
29
Citigroup
C
$178B
| $18.1M | 0.01% | 288,926 -924,321 | -76% | -$57.9M |
|
30
Nike
NKE
$114B
| $17.6M | 0.01% | 199,564 +195,749 | +5,131% | +$17.3M |
|
31
iShares 7-10 Year Treasury Bond ETF
IEF
$35.7B
| $17.6M | 0.01% | +179,259 | New | +$17.6M |
|
|
X
32
DELISTED
US Steel
X
| $17.2M | 0.01% | +487,266 | New | +$17.2M |
|
33
Humana
HUM
$36.5B
| $16.7M | 0.01% | 52,818 +32,317 | +158% | +$10.2M |
|
34
Alphabet (Google) Class C
GOOG
$2.58T
| $16.6M | 0.01% | 99,464 +87,898 | +760% | +$14.7M |
|
35
Dell
DELL
$82.6B
| $16.2M | 0.01% | 136,887 +30,327 | +28% | +$3.59M |
|
36
Albemarle
ALB
$9.99B
| $16.1M | 0.01% | 170,216 +113,256 | +199% | +$10.7M |
|
37
Unity
U
$16.7B
| $16M | 0.01% | 706,351 +297,872 | +73% | +$6.74M |
|
38
iShares MSCI EAFE ETF
EFA
$66B
| $14.5M | 0.01% | +173,650 | New | +$14.5M |
|
39
ASML
ASML
$292B
| $14.2M | 0.01% | 17,098 -4,304 | -20% | -$3.59M |
|
|
WBA
40
DELISTED
Walgreens Boots Alliance
WBA
| $13.5M | 0.01% | 1,510,857 +1,112,874 | +280% | +$9.97M |
|
41
Estee Lauder
EL
$33B
| $13.3M | 0.01% | +133,458 | New | +$13.3M |
|
42
ProShares Short QQQ
PSQ
$513M
| $13.2M | 0.01% | 333,536 +147,835 | +80% | +$5.83M |
|
43
Twilio
TWLO
$16.2B
| $13M | 0.01% | 200,078 -41,493 | -17% | -$2.71M |
|
44
Bilibili
BILI
$9.6B
| $12.7M | 0.01% | 544,237 +235,147 | +76% | +$5.5M |
|
45
Snowflake
SNOW
$79.6B
| $12.7M | 0.01% | 110,529 -131,860 | -54% | -$15.1M |
|
46
Best Buy
BBY
$15.6B
| $12.5M | 0.01% | 120,549 +6,155 | +5% | +$636K |
|
47
Warner Bros
WBD
$28.8B
| $12.3M | 0.01% | 1,494,111 +506,584 | +51% | +$4.18M |
|
48
Southwest Airlines
LUV
$17.3B
| $12.1M | 0.01% | 408,416 +23,572 | +6% | +$698K |
|
49
3M
MMM
$82.8B
| $12M | 0.01% | 87,838 -15,187 | -15% | -$2.08M |
|
50
Pinterest
PINS
$24.9B
| $11.7M | 0.01% | +362,130 | New | +$11.7M |
|