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 |
Amazon
AMZN
|
+$144M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$68.7M |
| 3 |
AT&T
T
|
+$45.5M |
| 4 |
Meta Platforms (Facebook)
META
|
+$38M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$35.4M |
Top Sells
| 1 |
Microsoft
MSFT
|
+$94.2M |
| 2 |
Citigroup
C
|
+$62.3M |
| 3 |
JPMorgan Chase
JPM
|
+$56.2M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.8M |
| 5 |
SPDR Gold Trust
GLD
|
+$44.4M |
Sector Composition
| 1 | Consumer Discretionary | 16.85% |
| 2 | Technology | 15.5% |
| 3 | Communication Services | 10.53% |
| 4 | Healthcare | 8.8% |
| 5 | Consumer Staples | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1151
Heron Therapeutics
HRTX
$193M
| $71K | ﹤0.01% |
28,635
+7,511
| +36% | +$18.6K |
|
1152
Schrodinger
SDGR
$1.37B
| $71K | ﹤0.01% |
+3,805
| New | +$71K |
|
1153
Trade Desk
TTD
$22.1B
| $71K | ﹤0.01% |
1,600
| – | – |
|
|
NVTA
1154
DELISTED
Invitae Corporation
NVTA
| $71K | ﹤0.01% |
38,350
-228,947
| -86% | -$424K |
|
|
JJN
1155
DELISTED
iPath Series B Bloomberg Nickel Subindex Total ReturnSM ETN
JJN
| $70K | ﹤0.01% |
1,785
-666
| -27% | -$26.1K |
|
1156
Anixa Biosciences
ANIX
$94.7M
| $70K | ﹤0.01% |
16,494
+4,196
| +34% | +$17.8K |
|
1157
Popular Inc
BPOP
$8.34B
| $70K | ﹤0.01% |
+1,065
| New | +$70K |
|
1158
Douglas Elliman
DOUG
$241M
| $70K | ﹤0.01% |
18,071
+16,763
| +1,282% | +$64.9K |
|
1159
ProShares UltraShort Dow 30
DXD
$52.3M
| $70K | ﹤0.01% |
1,621
-13,246
| -89% | -$572K |
|
1160
Embecta
EMBC
$878M
| $70K | ﹤0.01% |
2,770
+1,203
| +77% | +$30.4K |
|
1161
Lifecore Biomedical
LFCR
$281M
| $70K | ﹤0.01% |
10,874
+8,440
| +347% | +$54.3K |
|
1162
TH International
THCH
$79.1M
| $70K | ﹤0.01% |
5,071
-1,421
| -22% | -$19.6K |
|
1163
iShares 10-20 Year Treasury Bond ETF
TLH
$11.6B
| $70K | ﹤0.01% |
653
+595
| +1,026% | +$63.8K |
|
1164
US Commodity Index
USCI
$264M
| $70K | ﹤0.01% |
+1,245
| New | +$70K |
|
1165
China Automotive Systems
CAAS
$138M
| $69K | ﹤0.01% |
12,048
-9,720
| -45% | -$55.7K |
|
1166
Cheniere Energy
CQP
$25.2B
| $69K | ﹤0.01% |
+1,218
| New | +$69K |
|
1167
Grupo Aeroportuario Centro Norte
OMAB
$5.41B
| $69K | ﹤0.01% |
1,119
-1,073
| -49% | -$66.2K |
|
1168
Taylor Morrison
TMHC
$6.88B
| $69K | ﹤0.01% |
+2,298
| New | +$69K |
|
1169
WideOpenWest
WOW
$442M
| $69K | ﹤0.01% |
7,657
-19,639
| -72% | -$177K |
|
1170
Zevra Therapeutics
ZVRA
$435M
| $69K | ﹤0.01% |
15,103
-34,490
| -70% | -$158K |
|
1171
Acacia Research
ACTG
$317M
| $68K | ﹤0.01% |
+16,298
| New | +$68K |
|
1172
Evolus
EOLS
$465M
| $68K | ﹤0.01% |
9,065
+7,014
| +342% | +$52.6K |
|
1173
First Industrial Realty Trust
FR
$6.91B
| $68K | ﹤0.01% |
+1,411
| New | +$68K |
|
1174
Pathward Financial
CASH
$1.72B
| $67K | ﹤0.01% |
+1,578
| New | +$67K |
|
1175
IAC Inc
IAC
$2.89B
| $67K | ﹤0.01% |
1,852
-170
| -8% | -$6.15K |
|