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
|
+$45.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$33.2M |
| 5 |
Citigroup
C
|
+$32.7M |
Top Sells
| 1 |
Amazon
AMZN
|
+$164M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$111M |
| 3 |
NVIDIA
NVDA
|
+$77.7M |
| 4 |
Meta Platforms (Facebook)
META
|
+$60.9M |
| 5 |
Procter & Gamble
PG
|
+$38.8M |
Sector Composition
| 1 | Technology | 21.73% |
| 2 | Consumer Discretionary | 10.23% |
| 3 | Healthcare | 8.76% |
| 4 | Industrials | 7.59% |
| 5 | Communication Services | 6.56% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1101
Agilon Health
AGL
$468M
| $74K | ﹤0.01% |
+3,130
| New | +$74K |
|
1102
American Public Education
APEI
$596M
| $74K | ﹤0.01% |
+13,718
| New | +$74K |
|
1103
Designer Brands
DBI
$233M
| $74K | ﹤0.01% |
8,471
-951
| -10% | -$8.31K |
|
1104
ProShares Ultra Dow30
DDM
$452M
| $74K | ﹤0.01% |
1,166
-2,239
| -66% | -$142K |
|
1105
International Seaways
INSW
$2.28B
| $74K | ﹤0.01% |
1,787
-2,887
| -62% | -$120K |
|
1106
AMC Networks
AMCX
$346M
| $73K | ﹤0.01% |
4,159
+3,556
| +590% | +$62.4K |
|
1107
Eldorado Gold
EGO
$5.45B
| $73K | ﹤0.01% |
+7,138
| New | +$73K |
|
1108
iShares Expanded Tech Sector ETF
IGM
$8.98B
| $73K | ﹤0.01% |
1,302
+552
| +74% | +$30.9K |
|
1109
Vera Therapeutics
VERA
$1.57B
| $73K | ﹤0.01% |
+9,492
| New | +$73K |
|
1110
American Superconductor
AMSC
$2.47B
| $72K | ﹤0.01% |
14,846
+3,211
| +28% | +$15.6K |
|
1111
Anixa Biosciences
ANIX
$97.3M
| $72K | ﹤0.01% |
16,962
+468
| +3% | +$1.99K |
|
1112
Toll Brothers
TOL
$13.8B
| $72K | ﹤0.01% |
1,200
| – | – |
|
1113
Castle Biosciences
CSTL
$665M
| $71K | ﹤0.01% |
+3,138
| New | +$71K |
|
1114
ProShares UltraShort Gold
GLL
$50.7M
| $71K | ﹤0.01% |
1,332
+1,251
| +1,544% | +$66.7K |
|
|
PPTA
1115
Perpetua Resources
PPTA
$1.86B
| $71K | ﹤0.01% |
+15,983
| New | +$71K |
|
1116
Red Robin
RRGB
$111M
| $71K | ﹤0.01% |
+5,027
| New | +$71K |
|
|
RPT
1117
DELISTED
RPT Realty Common Shares of Beneficial Interest (MD)
RPT
| $71K | ﹤0.01% |
+7,476
| New | +$71K |
|
1118
Applied Optoelectronics
AAOI
$1.67B
| $70K | ﹤0.01% |
+31,868
| New | +$70K |
|
1119
Greenidge Generation Holdings
GREE
$21.6M
| $70K | ﹤0.01% |
15,547
-1,414
| -8% | -$6.37K |
|
1120
The Honest Company
HNST
$440M
| $70K | ﹤0.01% |
39,329
-32
| -0.1% | -$57 |
|
1121
iShares MSCI Global Metals & Mining Producers ETF
PICK
$841M
| $70K | ﹤0.01% |
1,641
-593
| -27% | -$25.3K |
|
1122
Skechers
SKX
$9.5B
| $70K | ﹤0.01% |
+1,490
| New | +$70K |
|
|
SLI
1123
Standard Lithium
SLI
$590M
| $70K | ﹤0.01% |
18,558
-3,166
| -15% | -$11.9K |
|
1124
Blend Labs
BLND
$1.07B
| $69K | ﹤0.01% |
69,964
-2,870
| -4% | -$2.83K |
|
1125
Cooper Companies
COO
$13.5B
| $69K | ﹤0.01% |
+740
| New | +$69K |
|