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
|
$80M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$45.3M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$38.8M |
| 4 |
Amazon
AMZN
|
$38.6M |
| 5 |
Tesla
TSLA
|
$36M |
Top Sells
| 1 |
Alibaba
BABA
|
$46.4M |
| 2 |
Boeing
BA
|
$29.8M |
| 3 |
SPDR Gold Trust
GLD
|
$18.2M |
| 4 |
Biogen
BIIB
|
$15.8M |
| 5 |
NVIDIA
NVDA
|
$14.3M |
Sector Composition
| 1 | Technology | 22.73% |
| 2 | Consumer Discretionary | 17.54% |
| 3 | Communication Services | 10.03% |
| 4 | Healthcare | 9.29% |
| 5 | Industrials | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
226
ON Semiconductor
ON
$20.1B
| $1.26M | ﹤0.01% |
51,794
+10,707
| +26% | +$261K |
|
227
F5
FFIV
$18.1B
| $1.25M | ﹤0.01% |
+8,926
| New | +$1.25M |
|
228
Williams-Sonoma
WSM
$24.7B
| $1.24M | ﹤0.01% |
33,854
+25,222
| +292% | +$926K |
|
229
McDonald's
MCD
$224B
| $1.23M | ﹤0.01% |
+6,236
| New | +$1.23M |
|
230
NCR Voyix
VYX
$1.84B
| $1.23M | ﹤0.01% |
56,820
+8,960
| +19% | +$193K |
|
231
DuPont de Nemours
DD
$32.6B
| $1.22M | ﹤0.01% |
19,041
+17,442
| +1,091% | +$1.12M |
|
232
Jacobs Solutions
J
$17.4B
| $1.22M | ﹤0.01% |
+16,455
| New | +$1.22M |
|
233
Lands' End
LE
$439M
| $1.21M | ﹤0.01% |
72,008
+35,270
| +96% | +$592K |
|
|
FG
234
DELISTED
FGL Holdings Ordinary Shares
FG
| $1.21M | ﹤0.01% |
+113,221
| New | +$1.21M |
|
|
WMGI
235
DELISTED
Wright Medical Group Inc
WMGI
| $1.2M | ﹤0.01% |
39,377
+33,650
| +588% | +$1.03M |
|
236
GrafTech
EAF
$256M
| $1.2M | ﹤0.01% |
+10,290
| New | +$1.2M |
|
237
PVH
PVH
$4.22B
| $1.19M | ﹤0.01% |
11,287
-4,303
| -28% | -$452K |
|
238
SAP
SAP
$313B
| $1.18M | ﹤0.01% |
8,837
-11,370
| -56% | -$1.52M |
|
239
Zebra Technologies
ZBRA
$16B
| $1.18M | ﹤0.01% |
4,639
+208
| +5% | +$53.1K |
|
240
Edgewell Personal Care
EPC
$1.09B
| $1.18M | ﹤0.01% |
38,234
-8,785
| -19% | -$272K |
|
241
Vulcan Materials
VMC
$39B
| $1.18M | ﹤0.01% |
8,165
+7,495
| +1,119% | +$1.08M |
|
242
WisdomTree India Earnings Fund ETF
EPI
$2.89B
| $1.17M | ﹤0.01% |
47,192
-110
| -0.2% | -$2.74K |
|
243
Synaptics
SYNA
$2.7B
| $1.17M | ﹤0.01% |
+17,720
| New | +$1.17M |
|
244
Under Armour Class C
UA
$2.13B
| $1.16M | ﹤0.01% |
60,371
+48,883
| +426% | +$937K |
|
|
WCG
245
DELISTED
Wellcare Health Plans, Inc.
WCG
| $1.16M | ﹤0.01% |
+3,500
| New | +$1.16M |
|
246
Acadia Pharmaceuticals
ACAD
$4.26B
| $1.15M | ﹤0.01% |
26,854
-40,966
| -60% | -$1.75M |
|
247
Intel
INTC
$107B
| $1.15M | ﹤0.01% |
+19,191
| New | +$1.15M |
|
|
CCMP
248
DELISTED
CMC Materials, Inc. Common Stock
CCMP
| $1.15M | ﹤0.01% |
+7,956
| New | +$1.15M |
|
249
Linde
LIN
$220B
| $1.14M | ﹤0.01% |
+5,361
| New | +$1.14M |
|
250
Coeur Mining
CDE
$9.43B
| $1.13M | ﹤0.01% |
139,338
+58,567
| +73% | +$473K |
|