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
|
$92M |
| 2 |
Walt Disney
DIS
|
$25.4M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
$12.8M |
| 4 |
Baidu
BIDU
|
$12.2M |
| 5 |
RHT
Red Hat Inc
RHT
|
$11.6M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
$61.4M |
| 2 |
Amazon
AMZN
|
$59.6M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$35.5M |
| 4 |
Apple
AAPL
|
$19.6M |
| 5 |
Financial Select Sector SPDR Fund
XLF
|
$18.2M |
Sector Composition
| 1 | Communication Services | 16.98% |
| 2 | Technology | 12.42% |
| 3 | Healthcare | 10.02% |
| 4 | Consumer Discretionary | 8.53% |
| 5 | Industrials | 6.02% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
76
Microchip Technology
MCHP
$34.3B
| $2.92M | 0.01% |
35,172
+24,533
| +231% | +$2.03M |
|
77
Dollar Tree
DLTR
$23.2B
| $2.91M | 0.01% |
27,691
+13,672
| +98% | +$1.44M |
|
78
ASML
ASML
$285B
| $2.87M | 0.01% |
15,281
+8,415
| +123% | +$1.58M |
|
79
Abbott
ABT
$231B
| $2.84M | 0.01% |
+35,528
| New | +$2.84M |
|
80
General Mills
GIS
$26.4B
| $2.84M | 0.01% |
54,793
+30,050
| +121% | +$1.55M |
|
81
Spotify
SPOT
$142B
| $2.74M | 0.01% |
19,745
+4,672
| +31% | +$648K |
|
82
AB InBev
BUD
$120B
| $2.73M | 0.01% |
32,530
+16,648
| +105% | +$1.4M |
|
83
McKesson
MCK
$85.4B
| $2.69M | 0.01% |
23,000
+13,919
| +153% | +$1.63M |
|
|
ZAYO
84
DELISTED
Zayo Group Holdings, Inc.
ZAYO
| $2.69M | 0.01% |
94,490
+59,644
| +171% | +$1.69M |
|
85
Zoetis
ZTS
$69.3B
| $2.68M | 0.01% |
26,582
+18,336
| +222% | +$1.85M |
|
86
Valero Energy
VLO
$47.9B
| $2.67M | 0.01% |
+31,512
| New | +$2.67M |
|
87
Williams-Sonoma
WSM
$22.9B
| $2.64M | 0.01% |
+46,969
| New | +$2.64M |
|
88
Pfizer
PFE
$142B
| $2.6M | 0.01% |
61,207
+60,907
| +20,302% | +$2.59M |
|
89
iShares Biotechnology ETF
IBB
$5.69B
| $2.58M | 0.01% |
23,113
+14,892
| +181% | +$1.66M |
|
90
RTX Corp
RTX
$212B
| $2.58M | 0.01% |
+20,041
| New | +$2.58M |
|
91
Ralph Lauren
RL
$18.8B
| $2.56M | 0.01% |
19,728
-11,099
| -36% | -$1.44M |
|
92
iShares MSCI South Korea ETF
EWY
$5.1B
| $2.51M | 0.01% |
41,252
-2,001
| -5% | -$122K |
|
|
VIAB
93
DELISTED
Viacom Inc. Class B
VIAB
| $2.49M | 0.01% |
88,757
+65,537
| +282% | +$1.84M |
|
94
KB Home
KBH
$4.32B
| $2.49M | 0.01% |
102,958
-14,776
| -13% | -$357K |
|
95
Northrop Grumman
NOC
$84.5B
| $2.46M | 0.01% |
9,110
-14,495
| -61% | -$3.91M |
|
96
Gilead Sciences
GILD
$140B
| $2.45M | 0.01% |
37,717
+18,841
| +100% | +$1.22M |
|
97
Oracle
ORCL
$633B
| $2.42M | 0.01% |
45,096
-45,903
| -50% | -$2.47M |
|
98
NIO
NIO
$14.8B
| $2.41M | 0.01% |
+472,688
| New | +$2.41M |
|
99
Burlington
BURL
$18.2B
| $2.39M | 0.01% |
+15,238
| New | +$2.39M |
|
|
HOME
100
DELISTED
At Home Group Inc.
HOME
| $2.39M | 0.01% |
133,677
+118,065
| +756% | +$2.11M |
|