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 | |
|---|---|---|---|---|---|---|
201
Goodyear
GT
$2.43B
| $3.21M | ﹤0.01% |
224,157
+1,159
| +0.5% | +$16.6K |
|
202
Pacific Biosciences
PACB
$381M
| $3.21M | ﹤0.01% |
326,791
+84,556
| +35% | +$829K |
|
|
MRO
203
DELISTED
Marathon Oil Corporation
MRO
| $3.16M | ﹤0.01% |
+130,864
| New | +$3.16M |
|
204
Boston Properties
BXP
$12.2B
| $3.14M | ﹤0.01% |
+44,745
| New | +$3.14M |
|
205
Cigna
CI
$81.5B
| $3.12M | ﹤0.01% |
10,418
+3,522
| +51% | +$1.05M |
|
206
Invesco CurrencyShares Japanese Yen Trust
FXY
$562M
| $3.12M | ﹤0.01% |
47,360
-42,881
| -48% | -$2.82M |
|
207
Sherwin-Williams
SHW
$92.9B
| $3.11M | ﹤0.01% |
+9,987
| New | +$3.11M |
|
208
Agnico Eagle Mines
AEM
$76.3B
| $3.11M | ﹤0.01% |
56,734
-107,112
| -65% | -$5.87M |
|
209
Sarepta Therapeutics
SRPT
$1.96B
| $3.11M | ﹤0.01% |
32,219
+8,660
| +37% | +$835K |
|
210
WEC Energy
WEC
$34.7B
| $3.07M | ﹤0.01% |
36,517
+29,699
| +436% | +$2.5M |
|
211
Las Vegas Sands
LVS
$36.9B
| $3.07M | ﹤0.01% |
62,436
-30,815
| -33% | -$1.52M |
|
212
Wolfspeed
WOLF
$196M
| $3.07M | ﹤0.01% |
+70,451
| New | +$3.07M |
|
213
iShares Core S&P Total US Stock Market ETF
ITOT
$75.5B
| $3.05M | ﹤0.01% |
+28,979
| New | +$3.05M |
|
214
Iovance Biotherapeutics
IOVA
$901M
| $3.04M | ﹤0.01% |
374,067
+198,650
| +113% | +$1.61M |
|
215
Autodesk
ADSK
$69.5B
| $3.02M | ﹤0.01% |
+12,415
| New | +$3.02M |
|
216
Camping World
CWH
$1.12B
| $3M | ﹤0.01% |
114,273
+81,364
| +247% | +$2.14M |
|
217
Freeport-McMoran
FCX
$66.5B
| $3M | ﹤0.01% |
+70,404
| New | +$3M |
|
218
QuantumScape
QS
$4.44B
| $3M | ﹤0.01% |
431,056
-363,180
| -46% | -$2.52M |
|
219
United States Natural Gas Fund
UNG
$615M
| $2.97M | ﹤0.01% |
146,312
+82,447
| +129% | +$1.67M |
|
220
ProShares UltraPro S&P 500
UPRO
$4.49B
| $2.96M | ﹤0.01% |
53,990
-993
| -2% | -$54.3K |
|
221
PVH
PVH
$4.22B
| $2.95M | ﹤0.01% |
24,140
+6,188
| +34% | +$755K |
|
222
VF Corp
VFC
$5.86B
| $2.92M | ﹤0.01% |
155,317
-115,059
| -43% | -$2.16M |
|
223
Darden Restaurants
DRI
$24.5B
| $2.92M | ﹤0.01% |
+17,747
| New | +$2.92M |
|
|
MRTX
224
DELISTED
Mirati Therapeutics, Inc. Common Stock
MRTX
| $2.91M | ﹤0.01% |
49,585
-6,848
| -12% | -$402K |
|
225
BWX Technologies
BWXT
$15B
| $2.88M | ﹤0.01% |
37,536
-16,142
| -30% | -$1.24M |
|