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 |
Goldman Sachs
GS
|
$38.4M |
| 2 |
Micron Technology
MU
|
$23.7M |
| 3 |
NVIDIA
NVDA
|
$23.6M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$21.7M |
| 5 |
Wells Fargo
WFC
|
$20.4M |
Top Sells
| 1 |
Citigroup
C
|
$21.6M |
| 2 |
Apple
AAPL
|
$17.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
$13.3M |
| 4 |
Eli Lilly
LLY
|
$9.69M |
| 5 |
Mastercard
MA
|
$8.27M |
Sector Composition
| 1 | Technology | 14.2% |
| 2 | Communication Services | 13.46% |
| 3 | Consumer Discretionary | 12.76% |
| 4 | Healthcare | 12.43% |
| 5 | Financials | 10.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
126
Kinder Morgan
KMI
$59.4B
| $2.55M | 0.11% |
117,076
+109,931
| +1,539% | +$2.39M |
|
127
Synchrony
SYF
$28.1B
| $2.52M | 0.11% |
+73,443
| New | +$2.52M |
|
128
Under Armour
UAA
$2.17B
| $2.49M | 0.11% |
+126,000
| New | +$2.49M |
|
129
Lam Research
LRCX
$124B
| $2.47M | 0.11% |
19,216
+1,490
| +8% | +$191K |
|
130
Corpay
CPAY
$22.6B
| $2.44M | 0.11% |
16,133
+15,164
| +1,565% | +$2.3M |
|
131
Rio Tinto
RIO
$102B
| $2.41M | 0.1% |
59,127
+37,705
| +176% | +$1.53M |
|
132
Marathon Petroleum
MPC
$54.4B
| $2.38M | 0.1% |
47,059
+39,963
| +563% | +$2.02M |
|
133
Ulta Beauty
ULTA
$23.8B
| $2.38M | 0.1% |
+8,331
| New | +$2.38M |
|
|
PRXL
134
DELISTED
Parexel International Corp
PRXL
| $2.35M | 0.1% |
+37,177
| New | +$2.35M |
|
135
Gartner
IT
$18.8B
| $2.32M | 0.1% |
+21,452
| New | +$2.32M |
|
136
CarMax
KMX
$9.04B
| $2.3M | 0.1% |
38,870
+12,445
| +47% | +$737K |
|
137
SAP
SAP
$316B
| $2.28M | 0.1% |
+23,274
| New | +$2.28M |
|
138
American Airlines Group
AAL
$8.87B
| $2.28M | 0.1% |
53,964
+48,098
| +820% | +$2.03M |
|
|
SUM
139
DELISTED
Summit Materials, Inc. Class A Common Stock
SUM
| $2.22M | 0.1% |
+89,671
| New | +$2.22M |
|
140
WisdomTree Europe Hedged Equity Fund
HEDJ
$1.78B
| $2.18M | 0.09% |
34,728
+839
| +2% | +$52.7K |
|
141
ProShares Ultra VIX Short-Term Futures ETF
UVXY
$694M
| $2.18M | 0.09% |
+134,597
| New | +$2.18M |
|
|
ALXN
142
DELISTED
Alexion Pharmaceuticals Inc
ALXN
| $2.17M | 0.09% |
17,928
+9,629
| +116% | +$1.17M |
|
143
Occidental Petroleum
OXY
$45.6B
| $2.17M | 0.09% |
+34,302
| New | +$2.17M |
|
|
MDP
144
DELISTED
Meredith Corporation
MDP
| $2.16M | 0.09% |
+33,378
| New | +$2.16M |
|
|
145
Mastercard
MA
$536B
| $2.16M | 0.09% |
19,177
-73,548
| -79% | -$8.27M |
|
|
RHT
146
DELISTED
Red Hat Inc
RHT
| $2.15M | 0.09% |
+24,848
| New | +$2.15M |
|
147
HSBC
HSBC
$224B
| $2.15M | 0.09% |
52,617
+49,204
| +1,442% | +$2.01M |
|
148
Pfizer
PFE
$141B
| $2.1M | 0.09% |
+61,475
| New | +$2.1M |
|
|
RDS.A
149
DELISTED
Royal Dutch Shell PLC ADS Class A
RDS.A
| $2.1M | 0.09% |
39,798
-39,062
| -50% | -$2.06M |
|
150
NRG Energy
NRG
$28.4B
| $2.08M | 0.09% |
+111,156
| New | +$2.08M |
|