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
|
+$158M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$69.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$57.4M |
| 4 |
Citigroup
C
|
+$23.4M |
| 5 |
Goldman Sachs
GS
|
+$23M |
Top Sells
| 1 |
Apple
AAPL
|
+$49.8M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
+$43.2M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$42.2M |
| 4 |
Micron Technology
MU
|
+$26.1M |
| 5 |
Adobe
ADBE
|
+$21M |
Sector Composition
| 1 | Consumer Discretionary | 20.63% |
| 2 | Communication Services | 16.3% |
| 3 | Technology | 12.42% |
| 4 | Industrials | 9.24% |
| 5 | Healthcare | 8.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
976
ATI
ATI
$10.5B
| $117K | ﹤0.01% |
3,976
+3,071
| +339% | +$90.4K |
|
977
Coherus Oncology, Inc. Common Stock
CHRS
$152M
| $117K | ﹤0.01% |
7,098
-6,403
| -47% | -$106K |
|
978
Covenant Logistics
CVLG
$575M
| $117K | ﹤0.01% |
8,108
-6,708
| -45% | -$96.8K |
|
979
El Pollo Loco
LOCO
$303M
| $117K | ﹤0.01% |
9,402
-7,632
| -45% | -$95K |
|
980
STAAR Surgical
STAA
$1.37B
| $117K | ﹤0.01% |
+2,451
| New | +$117K |
|
|
ADAP
981
Adaptimmune Therapeutics
ADAP
$13.4M
| $116K | ﹤0.01% |
8,620
+412
| +5% | +$5.54K |
|
|
JCP
982
DELISTED
J.C. Penney Company, Inc.
JCP
| $116K | ﹤0.01% |
+70,295
| New | +$116K |
|
|
COL
983
DELISTED
Rockwell Collins
COL
| $116K | ﹤0.01% |
832
-421
| -34% | -$58.7K |
|
984
Lesaka Technologies
LSAK
$384M
| $115K | ﹤0.01% |
14,408
-3,138
| -18% | -$25K |
|
|
CAI
985
DELISTED
CAI International, Inc.
CAI
| $115K | ﹤0.01% |
5,046
-3,672
| -42% | -$83.7K |
|
|
WEB
986
DELISTED
Web.com Group, Inc.
WEB
| $115K | ﹤0.01% |
+4,122
| New | +$115K |
|
987
Cincinnati Financial
CINF
$23.8B
| $114K | ﹤0.01% |
+1,494
| New | +$114K |
|
988
Huntington Ingalls Industries
HII
$10.7B
| $114K | ﹤0.01% |
449
-2,625
| -85% | -$666K |
|
989
RB Global
RBA
$22B
| $114K | ﹤0.01% |
3,158
-974
| -24% | -$35.2K |
|
|
CYB
990
DELISTED
WisdomTree Chinese Yuan Strategy Fund
CYB
| $114K | ﹤0.01% |
4,500
-4,496
| -50% | -$114K |
|
991
Alaska Air
ALK
$7.36B
| $113K | ﹤0.01% |
1,651
-518
| -24% | -$35.5K |
|
992
Avanos Medical
AVNS
$576M
| $113K | ﹤0.01% |
+1,663
| New | +$113K |
|
993
ICICI Bank
IBN
$113B
| $113K | ﹤0.01% |
13,386
+10,431
| +353% | +$88.1K |
|
994
Tredegar Corp
TG
$271M
| $113K | ﹤0.01% |
5,220
+4,823
| +1,215% | +$104K |
|
|
FTR
995
DELISTED
Frontier Communications Corp.
FTR
| $113K | ﹤0.01% |
+17,465
| New | +$113K |
|
996
SPDR S&P Oil & Gas Equipment & Services ETF
XES
$158M
| $112K | ﹤0.01% |
672
-1,139
| -63% | -$190K |
|
|
GCI
997
DELISTED
Gannett Co., Inc
GCI
| $112K | ﹤0.01% |
+11,191
| New | +$112K |
|
998
Assembly Biosciences
ASMB
$171M
| $111K | ﹤0.01% |
251
+8
| +3% | +$3.54K |
|
999
Invesco DB Base Metals Fund
DBB
$123M
| $111K | ﹤0.01% |
6,731
-1,871
| -22% | -$30.9K |
|
1000
Keurig Dr Pepper
KDP
$37.5B
| $111K | ﹤0.01% |
4,791
-39,842
| -89% | -$923K |
|