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 | |
|---|---|---|---|---|---|---|
101
Rio Tinto
RIO
$101B
| $4.22M | 0.01% |
+56,152
| New | +$4.22M |
|
|
HZNP
102
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
| $4.2M | 0.01% |
57,376
+41,925
| +271% | +$3.07M |
|
103
Eventbrite
EB
$262M
| $4.2M | 0.01% |
231,857
+174,499
| +304% | +$3.16M |
|
104
BP
BP
$89.1B
| $4.16M | 0.01% |
202,644
+64,185
| +46% | +$1.32M |
|
105
DexCom
DXCM
$30B
| $4.15M | 0.01% |
11,222
+2,719
| +32% | +$1.01M |
|
106
US Global Jets ETF
JETS
$847M
| $4.15M | 0.01% |
185,213
-10,113
| -5% | -$226K |
|
107
iShares MSCI Australia ETF
EWA
$1.51B
| $4.05M | 0.01% |
169,174
-36,656
| -18% | -$878K |
|
108
Invesco CurrencyShares Euro Currency Trust
FXE
$528M
| $4.01M | 0.01% |
34,968
+32,368
| +1,245% | +$3.71M |
|
109
JD.com
JD
$44.3B
| $3.94M | 0.01% |
44,783
-126,283
| -74% | -$11.1M |
|
110
3M
MMM
$80.6B
| $3.92M | 0.01% |
22,441
-3,300
| -13% | -$577K |
|
111
PG&E
PCG
$33.5B
| $3.89M | 0.01% |
312,188
+96,695
| +45% | +$1.2M |
|
112
Schlumberger
SLB
$52.5B
| $3.89M | 0.01% |
178,170
+128,932
| +262% | +$2.81M |
|
113
GSK
GSK
$79.5B
| $3.87M | 0.01% |
105,157
+65,960
| +168% | +$2.43M |
|
114
Domino's
DPZ
$15.9B
| $3.79M | ﹤0.01% |
9,891
+6,849
| +225% | +$2.63M |
|
115
American Tower
AMT
$93B
| $3.79M | ﹤0.01% |
16,892
+14,250
| +539% | +$3.2M |
|
116
Direxion Daily Gold Miners Index Bull 2X Shares
NUGT
$825M
| $3.77M | ﹤0.01% |
54,298
+26,892
| +98% | +$1.87M |
|
117
Lincoln National
LNC
$8.15B
| $3.62M | ﹤0.01% |
71,993
+44,101
| +158% | +$2.22M |
|
118
Stanley Black & Decker
SWK
$11.3B
| $3.62M | ﹤0.01% |
20,277
+2,932
| +17% | +$523K |
|
119
Western Digital
WDC
$29.6B
| $3.58M | ﹤0.01% |
64,650
-63,917
| -50% | -$3.54M |
|
120
Baidu
BIDU
$33.5B
| $3.57M | ﹤0.01% |
16,508
+82
| +0.5% | +$17.7K |
|
121
Agnico Eagle Mines
AEM
$74.5B
| $3.48M | ﹤0.01% |
49,424
+35,730
| +261% | +$2.52M |
|
122
Kellanova
K
$27.4B
| $3.46M | ﹤0.01% |
55,565
+37,392
| +206% | +$2.33M |
|
123
Skyworks Solutions
SWKS
$10.9B
| $3.45M | ﹤0.01% |
+22,590
| New | +$3.45M |
|
124
NVIDIA
NVDA
$4.16T
| $3.44M | ﹤0.01% |
6,593
+4,658
| +241% | +$2.43M |
|
125
STMicroelectronics
STM
$22.8B
| $3.39M | ﹤0.01% |
+91,442
| New | +$3.39M |
|