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 | |
|---|---|---|---|---|---|---|
176
Pan American Silver
PAAS
$14.6B
| $3.75M | ﹤0.01% |
229,565
-10,498
| -4% | -$171K |
|
177
TG Therapeutics
TGTX
$5.11B
| $3.72M | ﹤0.01% |
217,721
+173,656
| +394% | +$2.97M |
|
178
CleanSpark
CLSK
$2.6B
| $3.7M | ﹤0.01% |
335,214
+128,262
| +62% | +$1.41M |
|
179
Scorpio Tankers
STNG
$2.71B
| $3.68M | ﹤0.01% |
60,594
-126,918
| -68% | -$7.72M |
|
180
Amicus Therapeutics
FOLD
$2.46B
| $3.58M | ﹤0.01% |
251,989
+220,670
| +705% | +$3.13M |
|
181
Chewy
CHWY
$17.5B
| $3.57M | ﹤0.01% |
151,125
+115,126
| +320% | +$2.72M |
|
182
Elastic
ESTC
$9.21B
| $3.56M | ﹤0.01% |
+31,583
| New | +$3.56M |
|
183
Weibo
WB
$2.87B
| $3.47M | ﹤0.01% |
317,310
+194,382
| +158% | +$2.13M |
|
184
SentinelOne
S
$6.25B
| $3.46M | ﹤0.01% |
+125,923
| New | +$3.46M |
|
185
ProShares UltraShort Bloomberg Natural Gas
KOLD
$172M
| $3.44M | ﹤0.01% |
71,392
+55,780
| +357% | +$2.69M |
|
186
Stanley Black & Decker
SWK
$12.1B
| $3.44M | ﹤0.01% |
35,039
+19,427
| +124% | +$1.91M |
|
187
Lightspeed Commerce
LSPD
$1.65B
| $3.43M | ﹤0.01% |
163,598
+114,628
| +234% | +$2.41M |
|
188
United Rentals
URI
$62.7B
| $3.43M | ﹤0.01% |
5,973
-3,175
| -35% | -$1.82M |
|
189
East-West Bancorp
EWBC
$14.8B
| $3.4M | ﹤0.01% |
+47,314
| New | +$3.4M |
|
190
Vanguard Dividend Appreciation ETF
VIG
$95.8B
| $3.39M | ﹤0.01% |
19,906
+17,324
| +671% | +$2.95M |
|
191
Vanguard Information Technology ETF
VGT
$99.9B
| $3.39M | ﹤0.01% |
6,997
+1,661
| +31% | +$804K |
|
192
Vanguard Mid-Cap ETF
VO
$87.3B
| $3.38M | ﹤0.01% |
14,548
+13,948
| +2,325% | +$3.24M |
|
193
ProShares Ultra VIX Short-Term Futures ETF
UVXY
$665M
| $3.37M | ﹤0.01% |
+79,937
| New | +$3.37M |
|
194
Cisco
CSCO
$264B
| $3.35M | ﹤0.01% |
+66,342
| New | +$3.35M |
|
195
Vanguard FTSE Europe ETF
VGK
$26.9B
| $3.34M | ﹤0.01% |
51,722
+47,121
| +1,024% | +$3.04M |
|
196
Interactive Brokers
IBKR
$26.8B
| $3.32M | ﹤0.01% |
+160,116
| New | +$3.32M |
|
197
PPG Industries
PPG
$24.8B
| $3.31M | ﹤0.01% |
22,100
+10,860
| +97% | +$1.62M |
|
198
KeyCorp
KEY
$20.8B
| $3.28M | ﹤0.01% |
+228,022
| New | +$3.28M |
|
199
Direxion Daily Junior Gold Miners Index Bull 2X Shares
JNUG
$478M
| $3.27M | ﹤0.01% |
+96,446
| New | +$3.27M |
|
200
Immunovant
IMVT
$2.99B
| $3.26M | ﹤0.01% |
77,482
-47,730
| -38% | -$2.01M |
|