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 |
Alibaba
BABA
|
$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
$97.6M |
| 3 |
Walt Disney
DIS
|
$73.4M |
| 4 |
Citigroup
C
|
$45.8M |
| 5 |
KraneShares CSI China Internet ETF
KWEB
|
$41.5M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$149M |
| 2 |
Amazon
AMZN
|
$107M |
| 3 |
SPDR Gold Trust
GLD
|
$58.6M |
| 4 |
Coinbase
COIN
|
$56.5M |
| 5 |
NVIDIA
NVDA
|
$48.2M |
Sector Composition
| 1 | Technology | 16.06% |
| 2 | Consumer Discretionary | 14.45% |
| 3 | Communication Services | 10.03% |
| 4 | Financials | 9.44% |
| 5 | Healthcare | 9.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
126
Elbit Systems
ESLT
$22.3B
| $5.04M | ﹤0.01% |
23,644
+6,175
| +35% | +$1.32M |
|
127
Cheniere Energy
LNG
$51.8B
| $5.03M | ﹤0.01% |
29,477
+14,054
| +91% | +$2.4M |
|
128
Teck Resources
TECK
$16.8B
| $5.01M | ﹤0.01% |
+118,432
| New | +$5.01M |
|
129
Zions Bancorporation
ZION
$8.34B
| $5.01M | ﹤0.01% |
114,089
+79,429
| +229% | +$3.48M |
|
|
SGI
130
Somnigroup International Inc.
SGI
$18.3B
| $4.99M | ﹤0.01% |
97,818
+1,294
| +1% | +$65.9K |
|
131
Nutanix
NTNX
$18.7B
| $4.91M | ﹤0.01% |
+102,895
| New | +$4.91M |
|
|
WBA
132
DELISTED
Walgreens Boots Alliance
WBA
| $4.89M | ﹤0.01% |
187,375
+39,716
| +27% | +$1.04M |
|
133
MasTec
MTZ
$14B
| $4.89M | ﹤0.01% |
64,523
+41,682
| +182% | +$3.16M |
|
134
Axos Financial
AX
$5.13B
| $4.86M | ﹤0.01% |
+88,943
| New | +$4.86M |
|
135
Match Group
MTCH
$9.18B
| $4.85M | ﹤0.01% |
+132,873
| New | +$4.85M |
|
136
ProShares UltraPro Short QQQ
SQQQ
$2.32B
| $4.83M | ﹤0.01% |
+71,832
| New | +$4.83M |
|
137
PennyMac Financial
PFSI
$6.08B
| $4.83M | ﹤0.01% |
54,647
-3,366
| -6% | -$297K |
|
138
Glaukos
GKOS
$5.39B
| $4.83M | ﹤0.01% |
60,734
+38,541
| +174% | +$3.06M |
|
|
139
iShares 20+ Year Treasury Bond ETF
TLT
$48.9B
| $4.8M | ﹤0.01% |
48,567
-1,506,849
| -97% | -$149M |
|
140
Invesco Solar ETF
TAN
$765M
| $4.75M | ﹤0.01% |
89,043
+61,177
| +220% | +$3.26M |
|
141
Caesars Entertainment
CZR
$5.48B
| $4.75M | ﹤0.01% |
+101,228
| New | +$4.75M |
|
142
Direxion Daily 20+ Year Treasury Bull 3X Shares
TMF
$5.29B
| $4.7M | ﹤0.01% |
72,750
+39,588
| +119% | +$2.56M |
|
143
Celanese
CE
$5.34B
| $4.67M | ﹤0.01% |
30,069
+16,336
| +119% | +$2.54M |
|
144
VanEck Junior Gold Miners ETF
GDXJ
$7B
| $4.62M | ﹤0.01% |
121,805
+29,926
| +33% | +$1.13M |
|
145
Suncor Energy
SU
$48.5B
| $4.61M | ﹤0.01% |
+143,978
| New | +$4.61M |
|
146
Vodafone
VOD
$28.5B
| $4.61M | ﹤0.01% |
530,242
+53,794
| +11% | +$468K |
|
147
Berkshire Hathaway Class B
BRK.B
$1.08T
| $4.61M | ﹤0.01% |
12,915
+7,076
| +121% | +$2.52M |
|
148
PBF Energy
PBF
$3.3B
| $4.6M | ﹤0.01% |
104,655
-40,630
| -28% | -$1.79M |
|
149
Bank of America
BAC
$369B
| $4.59M | ﹤0.01% |
136,234
-1,342,679
| -91% | -$45.2M |
|
150
Estee Lauder
EL
$32.1B
| $4.58M | ﹤0.01% |
+31,290
| New | +$4.58M |
|