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 |
Advanced Micro Devices
AMD
|
$17.7M |
| 2 |
iShares MSCI EAFE ETF
EFA
|
$10.1M |
| 3 |
NIO
NIO
|
$7.66M |
| 4 |
Alibaba
BABA
|
$7.54M |
| 5 |
Micron Technology
MU
|
$6.73M |
Top Sells
| 1 |
NVIDIA
NVDA
|
$101M |
| 2 |
SPDR Gold Trust
GLD
|
$15.2M |
| 3 |
Amazon
AMZN
|
$9.5M |
| 4 |
SPDR S&P 500 ETF Trust
SPY
|
$8.76M |
| 5 |
Technology Select Sector SPDR Fund
XLK
|
$7.41M |
Sector Composition
| 1 | Technology | 18.66% |
| 2 | Consumer Discretionary | 14.99% |
| 3 | Communication Services | 10.06% |
| 4 | Healthcare | 9.68% |
| 5 | Financials | 9.59% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
201
Dell
DELL
$84.7B
| $3M | ﹤0.01% |
59,944
-2,235
| -4% | -$112K |
|
202
Merck
MRK
$211B
| $2.98M | ﹤0.01% |
38,216
+4,436
| +13% | +$346K |
|
203
Uber
UBER
$188B
| $2.96M | ﹤0.01% |
58,474
+12,523
| +27% | +$633K |
|
204
Bloom Energy
BE
$13.2B
| $2.96M | ﹤0.01% |
111,040
+129
| +0.1% | +$3.43K |
|
205
Novo Nordisk
NVO
$245B
| $2.94M | ﹤0.01% |
69,634
-200
| -0.3% | -$8.44K |
|
206
Starbucks
SBUX
$96.9B
| $2.93M | ﹤0.01% |
25,868
+17,893
| +224% | +$2.03M |
|
207
Xtrackers Harvest CSI 300 China A-Shares ETF
ASHR
$2.31B
| $2.92M | ﹤0.01% |
72,741
-2,300
| -3% | -$92.3K |
|
208
New Oriental
EDU
$7.98B
| $2.91M | ﹤0.01% |
37,294
+259
| +0.7% | +$20.2K |
|
|
MRO
209
DELISTED
Marathon Oil Corporation
MRO
| $2.9M | ﹤0.01% |
204,863
+36,247
| +21% | +$513K |
|
210
HubSpot
HUBS
$25.4B
| $2.9M | ﹤0.01% |
4,946
+80
| +2% | +$46.9K |
|
|
MNDT
211
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $2.89M | ﹤0.01% |
143,305
-2,541
| -2% | -$51.3K |
|
212
Tractor Supply
TSCO
$32B
| $2.89M | ﹤0.01% |
76,920
+1,040
| +1% | +$39.1K |
|
213
Nutrien
NTR
$27.5B
| $2.88M | ﹤0.01% |
46,853
+2,296
| +5% | +$141K |
|
|
RDS.A
214
DELISTED
Royal Dutch Shell PLC ADS Class A
RDS.A
| $2.84M | ﹤0.01% |
68,440
-800
| -1% | -$33.2K |
|
|
JMIA
215
Jumia Technologies
JMIA
$1.05B
| $2.81M | ﹤0.01% |
98,246
+6,033
| +7% | +$173K |
|
216
Phillips 66
PSX
$52.8B
| $2.81M | ﹤0.01% |
32,321
+507
| +2% | +$44.1K |
|
217
Invesco S&P 500 Equal Weight ETF
RSP
$73.9B
| $2.81M | ﹤0.01% |
18,488
| – | – |
|
|
NNDM
218
Nano Dimension
NNDM
$291M
| $2.78M | ﹤0.01% |
347,123
-2,317
| -0.7% | -$18.5K |
|
219
Consumers Staples Select Sector SPDR Fund
XLP
$15.8B
| $2.76M | ﹤0.01% |
39,541
+200
| +0.5% | +$14K |
|
220
Pfizer
PFE
$140B
| $2.75M | ﹤0.01% |
69,460
+15,114
| +28% | +$598K |
|
221
Arrowhead Research
ARWR
$3.98B
| $2.75M | ﹤0.01% |
32,311
+4,415
| +16% | +$375K |
|
222
KraneShares CSI China Internet ETF
KWEB
$8.54B
| $2.73M | ﹤0.01% |
39,981
-2,331
| -6% | -$159K |
|
223
Alnylam Pharmaceuticals
ALNY
$59.6B
| $2.71M | ﹤0.01% |
15,991
+707
| +5% | +$120K |
|
224
B. Riley Financial
RILY
$154M
| $2.71M | ﹤0.01% |
35,025
+600
| +2% | +$46.5K |
|
225
Direxion Daily Emerging Markets Bull 3X Shares
EDC
$86M
| $2.71M | ﹤0.01% |
25,706
| – | – |
|