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 |
Apple
AAPL
|
+$80M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$45.3M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$38.8M |
| 4 |
Amazon
AMZN
|
+$38.6M |
| 5 |
Tesla
TSLA
|
+$36M |
Top Sells
| 1 |
Alibaba
BABA
|
+$46.4M |
| 2 |
Boeing
BA
|
+$29.8M |
| 3 |
SPDR Gold Trust
GLD
|
+$18.2M |
| 4 |
Biogen
BIIB
|
+$15.8M |
| 5 |
NVIDIA
NVDA
|
+$14.3M |
Sector Composition
| 1 | Technology | 22.73% |
| 2 | Consumer Discretionary | 17.54% |
| 3 | Communication Services | 10.03% |
| 4 | Healthcare | 9.29% |
| 5 | Industrials | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1101
AllianceBernstein
AB
$4.17B
| $76K | ﹤0.01% |
2,530
+1,320
| +109% | +$39.7K |
|
1102
Apple Hospitality REIT
APLE
$2.97B
| $76K | ﹤0.01% |
+4,723
| New | +$76K |
|
1103
Adtalem Global Education
ATGE
$4.79B
| $76K | ﹤0.01% |
+2,176
| New | +$76K |
|
1104
Invesco Mortgage Capital
IVR
$515M
| $76K | ﹤0.01% |
457
+265
| +138% | +$44.1K |
|
1105
Middleby
MIDD
$6.99B
| $76K | ﹤0.01% |
700
-7,497
| -91% | -$814K |
|
1106
Sonida Senior Living
SNDA
$492M
| $76K | ﹤0.01% |
1,644
+1,638
| +27,300% | +$75.7K |
|
1107
UFP Industries
UFPI
$5.84B
| $76K | ﹤0.01% |
1,609
+924
| +135% | +$43.6K |
|
|
VNET
1108
VNET Group
VNET
$2.13B
| $76K | ﹤0.01% |
10,492
-20,560
| -66% | -$149K |
|
|
TWTR
1109
DELISTED
Twitter, Inc.
TWTR
| $76K | ﹤0.01% |
+2,372
| New | +$76K |
|
|
VAR
1110
DELISTED
Varian Medical Systems, Inc.
VAR
| $76K | ﹤0.01% |
540
-1,695
| -76% | -$239K |
|
|
AHH
1111
Armada Hoffler Properties
AHH
$576M
| $75K | ﹤0.01% |
+4,130
| New | +$75K |
|
1112
Champion Homes, Inc.
SKY
$4.19B
| $75K | ﹤0.01% |
2,379
-6,022
| -72% | -$190K |
|
1113
Telephone and Data Systems
TDS
$4.45B
| $75K | ﹤0.01% |
2,977
-1,375
| -32% | -$34.6K |
|
1114
Euronet Worldwide
EEFT
$3.57B
| $74K | ﹤0.01% |
+471
| New | +$74K |
|
1115
Acadia Healthcare
ACHC
$1.94B
| $73K | ﹤0.01% |
+2,209
| New | +$73K |
|
1116
Ironwood Pharmaceuticals
IRWD
$187M
| $73K | ﹤0.01% |
+5,557
| New | +$73K |
|
1117
Metallus
MTUS
$695M
| $73K | ﹤0.01% |
+9,403
| New | +$73K |
|
|
NM
1118
DELISTED
Navios Maritime Holdings Inc.
NM
| $73K | ﹤0.01% |
+16,323
| New | +$73K |
|
|
HEXO
1119
DELISTED
HEXO Corp. Common Shares
HEXO
| $73K | ﹤0.01% |
821
+812
| +9,022% | +$72.2K |
|
1120
ImmunityBio
IBRX
$2.43B
| $72K | ﹤0.01% |
+19,014
| New | +$72K |
|
1121
Research Frontiers
REFR
$43.4M
| $72K | ﹤0.01% |
23,975
+14,254
| +147% | +$42.8K |
|
|
B
1122
DELISTED
Barnes Group Inc.
B
| $72K | ﹤0.01% |
+1,172
| New | +$72K |
|
1123
DTE Energy
DTE
$28.2B
| $71K | ﹤0.01% |
643
-5,216
| -89% | -$576K |
|
1124
Groupon
GRPN
$916M
| $71K | ﹤0.01% |
1,500
+598
| +66% | +$28.3K |
|
1125
iShares 10-20 Year Treasury Bond ETF
TLH
$11.6B
| $71K | ﹤0.01% |
+496
| New | +$71K |
|