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 | |
|---|---|---|---|---|---|---|
226
BILL Holdings
BILL
$5.24B
| $1.93M | ﹤0.01% |
17,578
-25,142
| -59% | -$2.76M |
|
227
Coterra Energy
CTRA
$18.3B
| $1.92M | ﹤0.01% |
74,540
+10,013
| +16% | +$258K |
|
228
Caesars Entertainment
CZR
$5.48B
| $1.92M | ﹤0.01% |
50,172
+34,255
| +215% | +$1.31M |
|
229
Nokia
NOK
$24.5B
| $1.92M | ﹤0.01% |
416,803
-45,365
| -10% | -$209K |
|
230
EQT Corp
EQT
$32.2B
| $1.92M | ﹤0.01% |
55,837
+47,032
| +534% | +$1.62M |
|
231
Crown Holdings
CCK
$11B
| $1.91M | ﹤0.01% |
20,763
+14,290
| +221% | +$1.32M |
|
232
KLA
KLAC
$119B
| $1.91M | ﹤0.01% |
+5,988
| New | +$1.91M |
|
233
United States Brent Oil Fund
BNO
$108M
| $1.91M | ﹤0.01% |
58,217
+17,411
| +43% | +$570K |
|
234
iShares MSCI EAFE ETF
EFA
$66.2B
| $1.89M | ﹤0.01% |
30,229
-19,247
| -39% | -$1.2M |
|
235
Asana
ASAN
$3.18B
| $1.86M | ﹤0.01% |
105,680
+43,348
| +70% | +$762K |
|
236
Real Estate Select Sector SPDR Fund
XLRE
$7.66B
| $1.84M | ﹤0.01% |
45,009
+10,759
| +31% | +$440K |
|
237
Sibanye-Stillwater
SBSW
$6.08B
| $1.84M | ﹤0.01% |
184,159
+61,591
| +50% | +$614K |
|
238
Bank of New York Mellon
BK
$73.1B
| $1.82M | ﹤0.01% |
43,639
-45,514
| -51% | -$1.9M |
|
239
BioNTech
BNTX
$27B
| $1.81M | ﹤0.01% |
12,113
-9,652
| -44% | -$1.44M |
|
|
Y
240
DELISTED
Alleghany Corporation
Y
| $1.8M | ﹤0.01% |
+2,156
| New | +$1.8M |
|
241
Sonoco
SON
$4.56B
| $1.79M | ﹤0.01% |
31,467
+21,276
| +209% | +$1.21M |
|
242
Exelixis
EXEL
$10.2B
| $1.78M | ﹤0.01% |
85,373
-15,084
| -15% | -$314K |
|
243
Barclays
BCS
$69.1B
| $1.77M | ﹤0.01% |
232,957
+211,740
| +998% | +$1.61M |
|
|
JKS
244
JinkoSolar
JKS
$1.32B
| $1.75M | ﹤0.01% |
25,320
+17,620
| +229% | +$1.22M |
|
245
Global Payments
GPN
$21.3B
| $1.75M | ﹤0.01% |
15,782
+7,774
| +97% | +$860K |
|
246
Tradeweb Markets
TW
$25.4B
| $1.73M | ﹤0.01% |
+25,376
| New | +$1.73M |
|
247
ProShares UltraPro Short Dow 30
SDOW
$176M
| $1.72M | ﹤0.01% |
11,605
+110
| +1% | +$16.3K |
|
248
Intuit
INTU
$188B
| $1.71M | ﹤0.01% |
4,436
-24,569
| -85% | -$9.47M |
|
249
UiPath
PATH
$6.15B
| $1.68M | ﹤0.01% |
92,159
-89,711
| -49% | -$1.63M |
|
250
Vail Resorts
MTN
$5.87B
| $1.67M | ﹤0.01% |
7,677
+6,175
| +411% | +$1.35M |
|