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 | |
|---|---|---|---|---|---|---|
|
OIL
851
DELISTED
iPath Series B S&P GSCI Crude Oil ETN
OIL
| $162K | ﹤0.01% |
10,765
+3,400
| +46% | +$51.2K |
|
852
Leggett & Platt
LEG
$1.34B
| $161K | ﹤0.01% |
+3,679
| New | +$161K |
|
853
Texas Capital Bancshares
TCBI
$4B
| $161K | ﹤0.01% |
+1,958
| New | +$161K |
|
854
ProShares Ultra FTSE China 50 of PROSHARES TRUST
XPP
$20.4M
| $161K | ﹤0.01% |
2,322
+519
| +29% | +$36K |
|
|
CAJ
855
DELISTED
Canon, Inc.
CAJ
| $161K | ﹤0.01% |
5,087
+4,566
| +876% | +$145K |
|
|
TBCH
856
Turtle Beach Corporation Common Stock
TBCH
$300M
| $160K | ﹤0.01% |
8,065
+6,872
| +576% | +$136K |
|
|
VLP
857
DELISTED
Valero Energy Partners LP
VLP
| $160K | ﹤0.01% |
4,248
+2,352
| +124% | +$88.6K |
|
858
HP
HPQ
$26.5B
| $159K | ﹤0.01% |
6,207
-19,581
| -76% | -$502K |
|
859
ABM Industries
ABM
$2.87B
| $158K | ﹤0.01% |
4,922
+2,691
| +121% | +$86.4K |
|
|
SYNH
860
DELISTED
Syneos Health, Inc. Class A Common Stock
SYNH
| $158K | ﹤0.01% |
3,073
+608
| +25% | +$31.3K |
|
|
BHVN
861
DELISTED
Biohaven Pharmaceutical Holding Company Ltd.
BHVN
| $157K | ﹤0.01% |
4,186
+1,232
| +42% | +$46.2K |
|
862
LPL Financial
LPLA
$27.8B
| $156K | ﹤0.01% |
+2,424
| New | +$156K |
|
|
DQ
863
Daqo New Energy
DQ
$1.73B
| $155K | ﹤0.01% |
29,825
-29,030
| -49% | -$151K |
|
864
JELD-WEN Holding
JELD
$566M
| $154K | ﹤0.01% |
6,261
+4,295
| +218% | +$106K |
|
865
Manitowoc
MTW
$363M
| $154K | ﹤0.01% |
6,436
+4,924
| +326% | +$118K |
|
866
PROS Holdings
PRO
$745M
| $154K | ﹤0.01% |
4,408
+3,481
| +376% | +$122K |
|
867
ProPetro Holding
PUMP
$506M
| $154K | ﹤0.01% |
9,346
+9,114
| +3,928% | +$150K |
|
868
NiSource
NI
$19.4B
| $153K | ﹤0.01% |
6,178
+3,019
| +96% | +$74.8K |
|
|
STML
869
DELISTED
Stemline Therapeutics, Inc.
STML
| $153K | ﹤0.01% |
9,270
+2,232
| +32% | +$36.8K |
|
|
AFI
870
DELISTED
Armstrong Flooring, Inc.
AFI
| $152K | ﹤0.01% |
+8,431
| New | +$152K |
|
871
MPLX
MPLX
$51.8B
| $151K | ﹤0.01% |
4,373
-17,891
| -80% | -$618K |
|
|
HTGM
872
DELISTED
HTG Molecular Diagnostics, Inc. Common Stock
HTGM
| $151K | ﹤0.01% |
166
+165
| +16,500% | +$150K |
|
|
INXN
873
DELISTED
Interxion Holding N.V.
INXN
| $151K | ﹤0.01% |
2,253
-1,206
| -35% | -$80.8K |
|
|
CARB
874
DELISTED
Carbonite Inc
CARB
| $151K | ﹤0.01% |
+4,253
| New | +$151K |
|
875
A10 Networks
ATEN
$1.29B
| $150K | ﹤0.01% |
24,726
+19,385
| +363% | +$118K |
|