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 | |
|---|---|---|---|---|---|---|
126
ARK Fintech Innovation ETF
ARKF
$1.33B
| $3.39M | ﹤0.01% |
68,105
+31,991
| +89% | +$1.59M |
|
|
NVTA
127
DELISTED
Invitae Corporation
NVTA
| $3.36M | ﹤0.01% |
80,406
+72,396
| +904% | +$3.03M |
|
128
Viatris
VTRS
$12B
| $3.35M | ﹤0.01% |
178,702
+23,588
| +15% | +$442K |
|
129
Airbnb
ABNB
$76.8B
| $3.33M | ﹤0.01% |
+22,690
| New | +$3.33M |
|
130
Dropbox
DBX
$7.94B
| $3.27M | ﹤0.01% |
147,413
+23,663
| +19% | +$525K |
|
131
Datadog
DDOG
$46B
| $3.26M | ﹤0.01% |
33,091
+2,673
| +9% | +$263K |
|
132
VF Corp
VFC
$5.85B
| $3.22M | ﹤0.01% |
37,683
+31,469
| +506% | +$2.69M |
|
133
Crown Castle
CCI
$41.6B
| $3.13M | ﹤0.01% |
+19,667
| New | +$3.13M |
|
134
iQIYI
IQ
$2.61B
| $3.08M | ﹤0.01% |
176,071
+124,281
| +240% | +$2.17M |
|
135
Chubb
CB
$112B
| $3.08M | ﹤0.01% |
+19,981
| New | +$3.08M |
|
136
Occidental Petroleum
OXY
$45.9B
| $3.06M | ﹤0.01% |
176,900
-109,222
| -38% | -$1.89M |
|
137
iShares Core S&P Small-Cap ETF
IJR
$85.7B
| $3.06M | ﹤0.01% |
33,266
-15,770
| -32% | -$1.45M |
|
|
PARA
138
DELISTED
Paramount Global Class B
PARA
| $3.03M | ﹤0.01% |
81,419
-28,810
| -26% | -$1.07M |
|
139
Adient
ADNT
$1.99B
| $3.01M | ﹤0.01% |
86,699
+63,485
| +273% | +$2.21M |
|
140
Comcast
CMCSA
$125B
| $2.95M | ﹤0.01% |
+56,247
| New | +$2.95M |
|
|
NNDM
141
Nano Dimension
NNDM
$296M
| $2.93M | ﹤0.01% |
+322,166
| New | +$2.93M |
|
142
Etsy
ETSY
$5.17B
| $2.92M | ﹤0.01% |
16,405
-66,050
| -80% | -$11.7M |
|
143
iShares Select Dividend ETF
DVY
$20.8B
| $2.91M | ﹤0.01% |
30,279
-11,192
| -27% | -$1.08M |
|
144
Calix
CALX
$3.99B
| $2.87M | ﹤0.01% |
96,312
+82,286
| +587% | +$2.45M |
|
145
McKesson
MCK
$86B
| $2.86M | ﹤0.01% |
16,473
+4,397
| +36% | +$764K |
|
146
Union Pacific
UNP
$132B
| $2.86M | ﹤0.01% |
13,723
+9,551
| +229% | +$1.99M |
|
147
Ventas
VTR
$30.8B
| $2.84M | ﹤0.01% |
57,923
+11,208
| +24% | +$550K |
|
|
AMRS
148
DELISTED
Amyris Inc.
AMRS
| $2.81M | ﹤0.01% |
+455,286
| New | +$2.81M |
|
149
Kinross Gold
KGC
$26.2B
| $2.8M | ﹤0.01% |
381,586
+208,216
| +120% | +$1.53M |
|
150
TAL Education Group
TAL
$6.24B
| $2.8M | ﹤0.01% |
+39,113
| New | +$2.8M |
|