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 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$32.1M |
| 2 |
PARA
Paramount Global Class B
PARA
|
$23.3M |
| 3 |
Pinduoduo
PDD
|
$17.3M |
| 4 |
Pfizer
PFE
|
$16.8M |
| 5 |
American Airlines Group
AAL
|
$14.5M |
Top Sells
| 1 |
Amazon
AMZN
|
$64.4M |
| 2 |
Alphabet (Google) Class C
GOOG
|
$38.1M |
| 3 |
AutoZone
AZO
|
$32.2M |
| 4 |
SPDR S&P 500 ETF Trust
SPY
|
$25.3M |
| 5 |
Apple
AAPL
|
$22.5M |
Sector Composition
| 1 | Technology | 20.25% |
| 2 | Consumer Discretionary | 15.22% |
| 3 | Healthcare | 10.03% |
| 4 | Financials | 9.2% |
| 5 | Industrials | 9.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
ATVI
176
DELISTED
Activision Blizzard Inc.
ATVI
| $2.17M | ﹤0.01% |
23,368
-34,534
| -60% | -$3.21M |
|
|
LAC
177
DELISTED
Lithium Americas Corp. Common Shares
LAC
| $2.17M | ﹤0.01% |
135,251
+60,939
| +82% | +$979K |
|
178
Albemarle
ALB
$9.33B
| $2.17M | ﹤0.01% |
14,872
-18,159
| -55% | -$2.65M |
|
179
KE Holdings
BEKE
$21.9B
| $2.15M | ﹤0.01% |
37,680
-31,849
| -46% | -$1.81M |
|
180
WEX
WEX
$5.94B
| $2.13M | ﹤0.01% |
10,188
-1,827
| -15% | -$382K |
|
181
Riot Platforms
RIOT
$4.86B
| $2.13M | ﹤0.01% |
39,993
+30,651
| +328% | +$1.63M |
|
182
Invesco S&P 500 Equal Weight ETF
RSP
$74B
| $2.12M | ﹤0.01% |
14,941
+8,520
| +133% | +$1.21M |
|
183
Nexstar Media Group
NXST
$6.27B
| $2.11M | ﹤0.01% |
+15,021
| New | +$2.11M |
|
184
Celsius Holdings
CELH
$15.7B
| $2.11M | ﹤0.01% |
131,559
+46,773
| +55% | +$749K |
|
185
Coty
COTY
$3.82B
| $2.09M | ﹤0.01% |
231,987
+100,985
| +77% | +$910K |
|
186
Constellation Brands
STZ
$25.7B
| $2.08M | ﹤0.01% |
+9,141
| New | +$2.08M |
|
187
Vanguard Total Stock Market ETF
VTI
$529B
| $2.08M | ﹤0.01% |
+10,063
| New | +$2.08M |
|
|
NUAN
188
DELISTED
Nuance Communications, Inc.
NUAN
| $2.07M | ﹤0.01% |
47,417
+18,344
| +63% | +$800K |
|
189
Corteva
CTVA
$49.3B
| $2.07M | ﹤0.01% |
+44,366
| New | +$2.07M |
|
190
Oracle
ORCL
$626B
| $2.06M | ﹤0.01% |
+29,411
| New | +$2.06M |
|
191
Thomson Reuters
TRI
$80.6B
| $2.06M | ﹤0.01% |
22,707
+22,137
| +3,884% | +$2.01M |
|
192
Magnite
MGNI
$3.54B
| $2.06M | ﹤0.01% |
49,469
+14,173
| +40% | +$590K |
|
193
Nano X Imaging
NNOX
$238M
| $2.06M | ﹤0.01% |
49,583
+48,393
| +4,067% | +$2.01M |
|
194
Alnylam Pharmaceuticals
ALNY
$59.4B
| $2.03M | ﹤0.01% |
14,386
+6,311
| +78% | +$891K |
|
195
CleanSpark
CLSK
$2.55B
| $2.03M | ﹤0.01% |
85,171
+66,345
| +352% | +$1.58M |
|
196
Prologis
PLD
$105B
| $2.03M | ﹤0.01% |
+19,107
| New | +$2.03M |
|
197
Pultegroup
PHM
$27.2B
| $2.02M | ﹤0.01% |
38,487
-24,948
| -39% | -$1.31M |
|
198
iShares US Home Construction ETF
ITB
$3.28B
| $2.02M | ﹤0.01% |
29,730
+6,418
| +28% | +$435K |
|
|
NKLA
199
DELISTED
Nikola Corporation Common Stock
NKLA
| $2.01M | ﹤0.01% |
4,830
+4,111
| +572% | +$1.71M |
|
200
Bionano Genomics
BNGO
$17M
| $2.01M | ﹤0.01% |
+414
| New | +$2.01M |
|