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 |
Financial Select Sector SPDR Fund
XLF
|
$42.3M |
| 2 |
Shopify
SHOP
|
$37.4M |
| 3 |
Verizon
VZ
|
$34M |
| 4 |
iShares China Large-Cap ETF
FXI
|
$33M |
| 5 |
Merck
MRK
|
$28M |
Top Sells
| 1 |
AMC Entertainment Holdings
AMC
|
$38.3M |
| 2 |
Carnival Corp
CCL
|
$37.6M |
| 3 |
GE Aerospace
GE
|
$33M |
| 4 |
Advanced Micro Devices
AMD
|
$30.6M |
| 5 |
Micron Technology
MU
|
$28.3M |
Sector Composition
| 1 | Technology | 20.53% |
| 2 | Consumer Discretionary | 13.81% |
| 3 | Healthcare | 11.39% |
| 4 | Communication Services | 7.32% |
| 5 | Industrials | 6.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
226
iShares Russell 2000 ETF
IWM
$67.8B
| $2.94M | ﹤0.01% |
+13,233
| New | +$2.94M |
|
227
Direxion Daily Financial Bull 3x Shares
FAS
$2.59B
| $2.94M | ﹤0.01% |
22,493
-32,186
| -59% | -$4.21M |
|
228
Fiverr
FVRR
$875M
| $2.92M | ﹤0.01% |
25,707
+1,871
| +8% | +$213K |
|
229
Marqeta
MQ
$2.76B
| $2.91M | ﹤0.01% |
169,210
+150,252
| +793% | +$2.58M |
|
230
Suncor Energy
SU
$48.5B
| $2.89M | ﹤0.01% |
115,428
+31,419
| +37% | +$786K |
|
231
LiveRamp
RAMP
$1.86B
| $2.89M | ﹤0.01% |
60,224
+28,241
| +88% | +$1.35M |
|
232
Kraft Heinz
KHC
$32.3B
| $2.88M | ﹤0.01% |
+80,234
| New | +$2.88M |
|
233
International Flavors & Fragrances
IFF
$16.9B
| $2.88M | ﹤0.01% |
+19,086
| New | +$2.88M |
|
234
Unilever
UL
$158B
| $2.87M | ﹤0.01% |
53,303
+43,382
| +437% | +$2.33M |
|
235
United Natural Foods
UNFI
$1.75B
| $2.85M | ﹤0.01% |
58,110
+37,544
| +183% | +$1.84M |
|
236
FuelCell Energy
FCEL
$92.3M
| $2.84M | ﹤0.01% |
18,202
+15,207
| +508% | +$2.37M |
|
|
DISCA
237
DELISTED
Discovery, Inc. Series A Common Stock
DISCA
| $2.83M | ﹤0.01% |
120,076
+16,994
| +16% | +$400K |
|
238
iShares Silver Trust
SLV
$20.1B
| $2.81M | ﹤0.01% |
130,685
-275,589
| -68% | -$5.93M |
|
|
PBT
239
Permian Basin Royalty Trust
PBT
$838M
| $2.8M | ﹤0.01% |
+276,797
| New | +$2.8M |
|
240
CarMax
KMX
$9.11B
| $2.79M | ﹤0.01% |
21,400
-14,719
| -41% | -$1.92M |
|
241
ProShares Ultra S&P500
SSO
$7.2B
| $2.77M | ﹤0.01% |
37,898
+10,488
| +38% | +$767K |
|
242
DocuSign
DOCU
$16.1B
| $2.76M | ﹤0.01% |
+18,138
| New | +$2.76M |
|
243
Fiserv
FI
$73.4B
| $2.75M | ﹤0.01% |
+26,485
| New | +$2.75M |
|
244
Healthcare Realty
HR
$6.35B
| $2.73M | ﹤0.01% |
+81,685
| New | +$2.73M |
|
245
Novo Nordisk
NVO
$245B
| $2.7M | ﹤0.01% |
48,296
-21,338
| -31% | -$1.19M |
|
|
MNTV
246
DELISTED
Momentive Global Inc. Common Stock
MNTV
| $2.67M | ﹤0.01% |
+126,275
| New | +$2.67M |
|
247
Global X Uranium ETF
URA
$4.17B
| $2.66M | ﹤0.01% |
+116,539
| New | +$2.66M |
|
248
Stellantis
STLA
$26.2B
| $2.66M | ﹤0.01% |
141,694
-48,171
| -25% | -$904K |
|
249
Pan American Silver
PAAS
$14.6B
| $2.64M | ﹤0.01% |
105,700
+77,693
| +277% | +$1.94M |
|
250
Radware
RDWR
$1.07B
| $2.64M | ﹤0.01% |
63,369
-167,990
| -73% | -$6.99M |
|