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 |
Apple
AAPL
|
$258M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
$75.7M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
$67.2M |
| 4 |
Alphabet (Google) Class C
GOOG
|
$59.4M |
| 5 |
Intel
INTC
|
$45.8M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
$56.8M |
| 2 |
iShares Silver Trust
SLV
|
$45.9M |
| 3 |
Ford
F
|
$32.5M |
| 4 |
Exxon Mobil
XOM
|
$20.4M |
| 5 |
Caterpillar
CAT
|
$19.2M |
Sector Composition
| 1 | Technology | 26.01% |
| 2 | Consumer Discretionary | 9.82% |
| 3 | Communication Services | 9.82% |
| 4 | Financials | 8.68% |
| 5 | Healthcare | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
151
Conagra Brands
CAG
$9.07B
| $3.14M | ﹤0.01% |
+91,630
| New | +$3.14M |
|
152
SPDR Bloomberg 1-3 Month T-Bill ETF
BIL
$41.9B
| $3.13M | ﹤0.01% |
34,220
+7,000
| +26% | +$640K |
|
153
ZIM Integrated Shipping Services
ZIM
$1.61B
| $3.12M | ﹤0.01% |
65,981
-45,800
| -41% | -$2.16M |
|
154
Gilead Sciences
GILD
$140B
| $3.11M | ﹤0.01% |
+50,325
| New | +$3.11M |
|
155
Berkshire Hathaway Class B
BRK.B
$1.09T
| $3.11M | ﹤0.01% |
+11,378
| New | +$3.11M |
|
156
Okta
OKTA
$15.8B
| $3.1M | ﹤0.01% |
34,340
+517
| +2% | +$46.7K |
|
157
Trade Desk
TTD
$25.4B
| $3.1M | ﹤0.01% |
74,005
-140,397
| -65% | -$5.88M |
|
158
Amylyx Pharmaceuticals
AMLX
$887M
| $3.04M | ﹤0.01% |
158,090
+152,892
| +2,941% | +$2.94M |
|
159
United Parks & Resorts
PRKS
$2.99B
| $3.03M | ﹤0.01% |
68,557
+42,771
| +166% | +$1.89M |
|
160
Cintas
CTAS
$83.4B
| $2.99M | ﹤0.01% |
32,040
+10,308
| +47% | +$962K |
|
161
Duke Energy
DUK
$94B
| $2.98M | ﹤0.01% |
+27,808
| New | +$2.98M |
|
162
Prudential Financial
PRU
$38.3B
| $2.98M | ﹤0.01% |
+31,136
| New | +$2.98M |
|
163
HSBC
HSBC
$225B
| $2.91M | ﹤0.01% |
89,122
+77,392
| +660% | +$2.53M |
|
164
Petrobras
PBR
$79.8B
| $2.9M | ﹤0.01% |
+247,894
| New | +$2.9M |
|
|
HZNP
165
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
| $2.89M | ﹤0.01% |
+36,280
| New | +$2.89M |
|
166
Align Technology
ALGN
$9.76B
| $2.86M | ﹤0.01% |
12,096
+9,558
| +377% | +$2.26M |
|
167
Apollo Global Management
APO
$77.1B
| $2.79M | ﹤0.01% |
57,631
+2,347
| +4% | +$114K |
|
168
Cleveland-Cliffs
CLF
$5.2B
| $2.79M | ﹤0.01% |
181,305
+176,991
| +4,103% | +$2.72M |
|
169
Fortinet
FTNT
$58.6B
| $2.75M | ﹤0.01% |
48,668
-7,012
| -13% | -$397K |
|
170
Seagate
STX
$39.1B
| $2.72M | ﹤0.01% |
+38,079
| New | +$2.72M |
|
171
W.W. Grainger
GWW
$49.2B
| $2.71M | ﹤0.01% |
+5,965
| New | +$2.71M |
|
172
Bilibili
BILI
$9.29B
| $2.71M | ﹤0.01% |
105,710
-129,484
| -55% | -$3.31M |
|
173
Trip.com Group
TCOM
$47.7B
| $2.7M | ﹤0.01% |
98,319
+54,827
| +126% | +$1.5M |
|
174
Sysco
SYY
$39.5B
| $2.68M | ﹤0.01% |
31,600
+22,287
| +239% | +$1.89M |
|
175
Agnico Eagle Mines
AEM
$74.5B
| $2.64M | ﹤0.01% |
57,597
-51,625
| -47% | -$2.36M |
|