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 | |
|---|---|---|---|---|---|---|
|
YELL
1876
DELISTED
Yellow Corporation Common Stock
YELL
| $9K | ﹤0.01% |
3,906
-27,240
| -87% | -$62.8K |
|
1877
AC Immune
ACIU
$245M
| $8K | ﹤0.01% |
4,036
+1,897
| +89% | +$3.76K |
|
1878
a.k.a. Brands
AKA
$114M
| $8K | ﹤0.01% |
583
-67
| -10% | -$919 |
|
1879
InfraCap MLP ETF
AMZA
$406M
| $8K | ﹤0.01% |
281
-255
| -48% | -$7.26K |
|
1880
Breakwave Dry Bulk Shipping ETF
BDRY
$51.9M
| $8K | ﹤0.01% |
900
+695
| +339% | +$6.18K |
|
1881
Calavo Growers
CVGW
$486M
| $8K | ﹤0.01% |
+300
| New | +$8K |
|
1882
GrafTech
EAF
$277M
| $8K | ﹤0.01% |
187
-1,211
| -87% | -$51.8K |
|
1883
FibroGen
FGEN
$47.4M
| $8K | ﹤0.01% |
22
-339
| -94% | -$123K |
|
1884
Flotek Industries
FTK
$359M
| $8K | ﹤0.01% |
1,264
-1,388
| -52% | -$8.79K |
|
1885
LifeMD
LFMD
$286M
| $8K | ﹤0.01% |
+4,460
| New | +$8K |
|
1886
M/I Homes
MHO
$3.97B
| $8K | ﹤0.01% |
190
-471
| -71% | -$19.8K |
|
1887
Pluri
PLUR
$38.5M
| $8K | ﹤0.01% |
1,108
-25
| -2% | -$181 |
|
1888
PMV Pharmaceuticals
PMVP
$64.6M
| $8K | ﹤0.01% |
+982
| New | +$8K |
|
1889
ProPhase Labs
PRPH
$17.8M
| $8K | ﹤0.01% |
848
-266
| -24% | -$2.51K |
|
1890
Invesco Oil & Gas Services ETF
PXJ
$27.8M
| $8K | ﹤0.01% |
336
-97
| -22% | -$2.31K |
|
1891
SGHC Ltd
SGHC
$6.75B
| $8K | ﹤0.01% |
2,802
-4,411
| -61% | -$12.6K |
|
1892
ProShares Short High Yield
SJB
$68.2M
| $8K | ﹤0.01% |
460
-100
| -18% | -$1.74K |
|
1893
Virgin Galactic
SPCE
$192M
| $8K | ﹤0.01% |
122
| – | – |
|
1894
Tradr 2X Long Innovation ETF
TARK
$37.8M
| $8K | ﹤0.01% |
394
-2,433
| -86% | -$49.4K |
|
1895
United Fire Group
UFCS
$792M
| $8K | ﹤0.01% |
319
+300
| +1,579% | +$7.52K |
|
|
SUNW
1896
DELISTED
Sunworks, Inc.
SUNW
| $8K | ﹤0.01% |
5,188
-2,256
| -30% | -$3.48K |
|
|
AMTI
1897
DELISTED
Applied Molecular Transport Inc. Common Stock
AMTI
| $8K | ﹤0.01% |
20,603
+12,309
| +148% | +$4.78K |
|
|
HGEN
1898
DELISTED
HUMANIGEN, INC.
HGEN
| $8K | ﹤0.01% |
72,448
-1,547
| -2% | -$171 |
|
|
AVYA
1899
DELISTED
Avaya Holdings Corp. Common Stock
AVYA
| $8K | ﹤0.01% |
42,410
+42,328
| +51,620% | +$7.99K |
|
|
ARC
1900
DELISTED
ARC Document Solutions, Inc.
ARC
| $8K | ﹤0.01% |
+2,849
| New | +$8K |
|