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 | |
|---|---|---|---|---|---|---|
76
Altria Group
MO
$111B
| $5.73M | 0.01% |
139,771
+8,221
| +6% | +$337K |
|
77
Trade Desk
TTD
$26.3B
| $5.56M | 0.01% |
6,947
+5,615
| +422% | +$4.5M |
|
|
ATVI
78
DELISTED
Activision Blizzard Inc.
ATVI
| $5.38M | 0.01% |
57,902
+8,103
| +16% | +$752K |
|
79
Salesforce
CRM
$243B
| $5.32M | 0.01% |
23,904
-21,247
| -47% | -$4.73M |
|
|
ABMD
80
DELISTED
Abiomed Inc
ABMD
| $5.2M | 0.01% |
16,052
+6,698
| +72% | +$2.17M |
|
81
UnitedHealth
UNH
$277B
| $5.16M | 0.01% |
14,701
-15,068
| -51% | -$5.28M |
|
82
Qualcomm
QCOM
$169B
| $5.04M | 0.01% |
+33,072
| New | +$5.04M |
|
83
Wheaton Precious Metals
WPM
$46.4B
| $4.87M | 0.01% |
116,748
+111,582
| +2,160% | +$4.66M |
|
84
Albemarle
ALB
$9.39B
| $4.87M | 0.01% |
33,031
+22,441
| +212% | +$3.31M |
|
|
JMIA
85
Jumia Technologies
JMIA
$971M
| $4.71M | 0.01% |
116,815
+19,472
| +20% | +$786K |
|
86
Caterpillar
CAT
$193B
| $4.71M | 0.01% |
25,889
-25,342
| -49% | -$4.61M |
|
87
Darden Restaurants
DRI
$24.3B
| $4.68M | 0.01% |
39,319
-20,429
| -34% | -$2.43M |
|
88
iShares MSCI Emerging Markets ETF
EEM
$19B
| $4.66M | 0.01% |
+90,216
| New | +$4.66M |
|
89
Global X Lithium & Battery Tech ETF
LIT
$1.07B
| $4.59M | 0.01% |
74,196
+72,208
| +3,632% | +$4.47M |
|
90
Atlassian
TEAM
$45.1B
| $4.48M | 0.01% |
+19,140
| New | +$4.48M |
|
91
Visa
V
$676B
| $4.41M | 0.01% |
20,168
-23,000
| -53% | -$5.03M |
|
92
Energy Select Sector SPDR Fund
XLE
$27.1B
| $4.38M | 0.01% |
115,602
+83,947
| +265% | +$3.18M |
|
93
ProShares UltraPro S&P 500
UPRO
$4.39B
| $4.35M | 0.01% |
56,552
-3,533
| -6% | -$272K |
|
94
Fluor
FLR
$7.01B
| $4.32M | 0.01% |
270,271
+265,758
| +5,889% | +$4.24M |
|
95
Colgate-Palmolive
CL
$67.4B
| $4.29M | 0.01% |
50,142
+12,313
| +33% | +$1.05M |
|
96
KE Holdings
BEKE
$22B
| $4.28M | 0.01% |
69,529
+67,499
| +3,325% | +$4.15M |
|
97
SPDR Gold Trust
GLD
$111B
| $4.27M | 0.01% |
23,955
-110,346
| -82% | -$19.7M |
|
98
Novavax
NVAX
$1.22B
| $4.27M | 0.01% |
38,302
+8,102
| +27% | +$903K |
|
99
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
$303M
| $4.23M | 0.01% |
257,827
+95,308
| +59% | +$1.56M |
|
100
Ferrari
RACE
$88B
| $4.23M | 0.01% |
18,429
-324
| -2% | -$74.4K |
|