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 | |
|---|---|---|---|---|---|---|
951
Atkore
ATKR
$2.07B
| $124K | ﹤0.01% |
+4,676
| New | +$124K |
|
952
ProShares Ultra Dow30
DDM
$449M
| $124K | ﹤0.01% |
+2,513
| New | +$124K |
|
953
WisdomTree Emerging Markets High Dividend Fund
DEM
$3.18B
| $124K | ﹤0.01% |
+2,844
| New | +$124K |
|
954
Mammoth Energy Services
TUSK
$114M
| $124K | ﹤0.01% |
+4,291
| New | +$124K |
|
|
AGEN
955
Agenus
AGEN
$148M
| $123K | ﹤0.01% |
2,932
+2,654
| +955% | +$111K |
|
|
TCF
956
DELISTED
TCF Financial Corporation Common Stock
TCF
| $123K | ﹤0.01% |
+2,312
| New | +$123K |
|
957
Huazhu Hotels Group
HTHT
$11.4B
| $122K | ﹤0.01% |
3,795
-2,868
| -43% | -$92.2K |
|
958
Global X Social Media ETF
SOCL
$156M
| $122K | ﹤0.01% |
3,834
+3,451
| +901% | +$110K |
|
959
Timken Company
TKR
$5.45B
| $122K | ﹤0.01% |
2,465
-1,312
| -35% | -$64.9K |
|
|
VSLR
960
DELISTED
VIVINT SOLAR, INC.
VSLR
| $122K | ﹤0.01% |
23,577
+20,843
| +762% | +$108K |
|
|
TTPH
961
DELISTED
Tetraphase Pharmaceuticals, Inc.
TTPH
| $122K | ﹤0.01% |
+2,220
| New | +$122K |
|
962
Ecolab
ECL
$77.4B
| $121K | ﹤0.01% |
+777
| New | +$121K |
|
963
Equitable Holdings
EQH
$16.2B
| $121K | ﹤0.01% |
5,683
+1,432
| +34% | +$30.5K |
|
964
Global X Lithium & Battery Tech ETF
LIT
$1.14B
| $121K | ﹤0.01% |
3,677
+430
| +13% | +$14.2K |
|
965
Ichor Holdings
ICHR
$579M
| $120K | ﹤0.01% |
5,883
-11,436
| -66% | -$233K |
|
966
Gaming and Leisure Properties
GLPI
$13.5B
| $119K | ﹤0.01% |
3,396
-6,277
| -65% | -$220K |
|
967
Inseego
INSG
$202M
| $119K | ﹤0.01% |
3,105
+2,778
| +850% | +$106K |
|
968
Nu Skin
NUS
$582M
| $119K | ﹤0.01% |
+1,454
| New | +$119K |
|
969
Stratasys
SSYS
$835M
| $119K | ﹤0.01% |
5,153
-28,646
| -85% | -$662K |
|
970
Toyota
TM
$255B
| $119K | ﹤0.01% |
961
-1,972
| -67% | -$244K |
|
971
Hilton Grand Vacations
HGV
$4.02B
| $118K | ﹤0.01% |
3,594
-8,369
| -70% | -$275K |
|
972
SPDR S&P Bank ETF
KBE
$1.55B
| $118K | ﹤0.01% |
+2,535
| New | +$118K |
|
973
Lands' End
LE
$458M
| $118K | ﹤0.01% |
6,773
+3,773
| +126% | +$65.7K |
|
974
Vistra
VST
$70B
| $118K | ﹤0.01% |
+4,765
| New | +$118K |
|
975
Dentsply Sirona
XRAY
$2.71B
| $118K | ﹤0.01% |
+3,139
| New | +$118K |
|