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 |
Financial Select Sector SPDR Fund
XLF
|
$42.3M |
| 2 |
Shopify
SHOP
|
$37.4M |
| 3 |
Verizon
VZ
|
$34M |
| 4 |
iShares China Large-Cap ETF
FXI
|
$33M |
| 5 |
Merck
MRK
|
$28M |
Top Sells
| 1 |
AMC Entertainment Holdings
AMC
|
$38.3M |
| 2 |
Carnival Corp
CCL
|
$37.6M |
| 3 |
GE Aerospace
GE
|
$33M |
| 4 |
Advanced Micro Devices
AMD
|
$30.6M |
| 5 |
Micron Technology
MU
|
$28.3M |
Sector Composition
| 1 | Technology | 20.53% |
| 2 | Consumer Discretionary | 13.81% |
| 3 | Healthcare | 11.39% |
| 4 | Communication Services | 7.32% |
| 5 | Industrials | 6.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
126
Twilio
TWLO
$16.1B
| $5.51M | 0.01% |
20,931
+19,588
| +1,459% | +$5.16M |
|
127
Airbnb
ABNB
$76.5B
| $5.42M | 0.01% |
32,555
-48,025
| -60% | -$8M |
|
128
Direxion Daily Technology Bull 3x Shares
TECL
$3.42B
| $5.36M | 0.01% |
62,151
-23,792
| -28% | -$2.05M |
|
129
Agnico Eagle Mines
AEM
$74.7B
| $5.35M | 0.01% |
100,687
+64,588
| +179% | +$3.43M |
|
130
Futu Holdings
FUTU
$27B
| $5.33M | 0.01% |
123,118
+14,461
| +13% | +$626K |
|
131
Humana
HUM
$37.5B
| $5.19M | 0.01% |
+11,192
| New | +$5.19M |
|
132
Best Buy
BBY
$15.8B
| $5.12M | 0.01% |
+50,348
| New | +$5.12M |
|
133
ConocoPhillips
COP
$118B
| $5.11M | 0.01% |
70,827
-42,337
| -37% | -$3.06M |
|
134
Gilead Sciences
GILD
$140B
| $4.99M | 0.01% |
68,715
-41,827
| -38% | -$3.04M |
|
135
Fidelity National Information Services
FIS
$35.6B
| $4.94M | 0.01% |
+45,235
| New | +$4.94M |
|
136
Xtrackers Harvest CSI 300 China A-Shares ETF
ASHR
$2.31B
| $4.92M | 0.01% |
125,940
+53,199
| +73% | +$2.08M |
|
137
C3.ai
AI
$2.29B
| $4.86M | ﹤0.01% |
155,490
+89,647
| +136% | +$2.8M |
|
138
Invesco QQQ Trust
QQQ
$364B
| $4.78M | ﹤0.01% |
+12,012
| New | +$4.78M |
|
|
GAP
139
The Gap, Inc.
GAP
$8.38B
| $4.78M | ﹤0.01% |
270,751
+107,787
| +66% | +$1.9M |
|
140
Rocket Companies
RKT
$37.6B
| $4.76M | ﹤0.01% |
340,262
-291,384
| -46% | -$4.08M |
|
141
Workday
WDAY
$62.3B
| $4.75M | ﹤0.01% |
17,370
-15,375
| -47% | -$4.2M |
|
142
ArcelorMittal
MT
$24.9B
| $4.73M | ﹤0.01% |
148,529
+85,134
| +134% | +$2.71M |
|
143
CF Industries
CF
$13.7B
| $4.71M | ﹤0.01% |
+66,529
| New | +$4.71M |
|
|
144
GE Aerospace
GE
$293B
| $4.69M | ﹤0.01% |
79,723
-560,114
| -88% | -$33M |
|
145
Bausch Health
BHC
$2.72B
| $4.63M | ﹤0.01% |
167,678
+15,116
| +10% | +$417K |
|
146
Valero Energy
VLO
$48.3B
| $4.6M | ﹤0.01% |
61,271
+30,861
| +101% | +$2.32M |
|
147
Blackrock
BLK
$170B
| $4.5M | ﹤0.01% |
4,915
+1,106
| +29% | +$1.01M |
|
148
BILL Holdings
BILL
$4.69B
| $4.49M | ﹤0.01% |
18,024
+275
| +2% | +$68.5K |
|
149
Johnson Controls International
JCI
$68.9B
| $4.45M | ﹤0.01% |
+54,678
| New | +$4.45M |
|
150
VanEck Junior Gold Miners ETF
GDXJ
$6.91B
| $4.41M | ﹤0.01% |
105,254
+7,739
| +8% | +$324K |
|