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 |
Energy Select Sector SPDR Fund
XLE
|
+$93.9M |
| 2 |
Pfizer
PFE
|
+$89.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Intel
INTC
|
+$60.2M |
| 5 |
Meta Platforms (Facebook)
META
|
+$52.5M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$146M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$109M |
| 3 |
Alibaba
BABA
|
+$81.8M |
| 4 |
Walt Disney
DIS
|
+$80.2M |
| 5 |
Citigroup
C
|
+$55.3M |
Sector Composition
| 1 | Technology | 19.03% |
| 2 | Healthcare | 13.86% |
| 3 | Consumer Discretionary | 12.44% |
| 4 | Industrials | 8.48% |
| 5 | Communication Services | 7.95% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1176
Ingredion
INGR
$7.96B
| $108K | ﹤0.01% |
+930
| New | +$108K |
|
1177
Tiptree Inc
TIPT
$885M
| $108K | ﹤0.01% |
6,264
-30,115
| -83% | -$519K |
|
1178
Voyager Therapeutics
VYGR
$249M
| $108K | ﹤0.01% |
+11,611
| New | +$108K |
|
1179
Arthur J. Gallagher & Co
AJG
$76.1B
| $108K | ﹤0.01% |
435
-8,046
| -95% | -$2M |
|
1180
ProShares Short Dow30
DOG
$130M
| $107K | ﹤0.01% |
+3,797
| New | +$107K |
|
1181
The Beauty Health Co
SKIN
$301M
| $107K | ﹤0.01% |
24,241
-213,868
| -90% | -$944K |
|
1182
UBS Group
UBS
$132B
| $106K | ﹤0.01% |
3,480
-73,575
| -95% | -$2.24M |
|
1183
Invesco DB Oil Fund
DBO
$229M
| $105K | ﹤0.01% |
6,802
+3,127
| +85% | +$48.3K |
|
1184
Integral Ad Science
IAS
$1.44B
| $105K | ﹤0.01% |
10,594
-476
| -4% | -$4.72K |
|
1185
Napco Security Technologies
NSSC
$1.5B
| $105K | ﹤0.01% |
2,620
+1,296
| +98% | +$51.9K |
|
1186
Sonos
SONO
$1.87B
| $105K | ﹤0.01% |
+5,553
| New | +$105K |
|
|
AGS
1187
DELISTED
PlayAGS
AGS
| $104K | ﹤0.01% |
11,609
+7,565
| +187% | +$67.8K |
|
1188
Imperial Petroleum
IMPP
$161M
| $104K | ﹤0.01% |
33,327
+25,865
| +347% | +$80.7K |
|
1189
Sociedad Química y Minera de Chile
SQM
$12.3B
| $104K | ﹤0.01% |
+2,116
| New | +$104K |
|
1190
Comtech Telecommunications
CMTL
$73.2M
| $103K | ﹤0.01% |
30,054
+15,297
| +104% | +$52.4K |
|
1191
Global X MSCI Greece ETF
GREK
$308M
| $103K | ﹤0.01% |
2,596
+1,690
| +187% | +$67.1K |
|
1192
Travelzoo
TZOO
$113M
| $103K | ﹤0.01% |
10,120
+8,162
| +417% | +$83.1K |
|
1193
Generation Bio
GBIO
$40.3M
| $102K | ﹤0.01% |
2,509
+1,227
| +96% | +$49.9K |
|
1194
Synchronoss Technologies
SNCR
$75.3M
| $102K | ﹤0.01% |
12,224
+10,341
| +549% | +$86.3K |
|
1195
Calix
CALX
$4.18B
| $101K | ﹤0.01% |
+3,068
| New | +$101K |
|
1196
Denali Therapeutics
DNLI
$1.93B
| $101K | ﹤0.01% |
+4,928
| New | +$101K |
|
1197
Atossa Therapeutics
ATOS
$114M
| $100K | ﹤0.01% |
+55,589
| New | +$100K |
|
1198
Global X Robotics & Artificial Intelligence ETF
BOTZ
$2.99B
| $100K | ﹤0.01% |
+3,153
| New | +$100K |
|
1199
Fortune Brands Innovations
FBIN
$6.83B
| $100K | ﹤0.01% |
1,186
+640
| +117% | +$54K |
|
1200
News Corp Class A
NWSA
$17.1B
| $100K | ﹤0.01% |
3,827
-10,673
| -74% | -$279K |
|