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 |
Energy Select Sector SPDR Fund
XLE
|
$93.9M |
| 2 |
Pfizer
PFE
|
$89.5M |
| 3 |
Boeing
BA
|
$66.7M |
| 4 |
Intel
INTC
|
$60.2M |
| 5 |
Meta Platforms (Facebook)
META
|
$52.5M |
Top Sells
| 1 |
NVIDIA
NVDA
|
$146M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
$109M |
| 3 |
Alibaba
BABA
|
$81.8M |
| 4 |
Walt Disney
DIS
|
$80.2M |
| 5 |
Citigroup
C
|
$55.3M |
Sector Composition
| 1 | Technology | 19.03% |
| 2 | Healthcare | 13.86% |
| 3 | Consumer Discretionary | 12.44% |
| 4 | Industrials | 8.48% |
| 5 | Communication Services | 7.95% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
4526
Accuray
ARAY
$170M
| – | – |
-17,105
| Closed | -$48K |
|
4527
Ares Capital
ARCC
$15.8B
| – | – |
0
| – | – |
|
4528
Arcturus Therapeutics
ARCT
$455M
| – | – |
0
| – | – |
|
4529
American Resources Corp
AREC
$158M
| – | – |
-81,300
| Closed | -$121K |
|
4530
Arhaus
ARHS
$1.6B
| – | – |
0
| – | – |
|
|
ARI
4531
Apollo Commercial Real Estate
ARI
$1.51B
| – | – |
0
| – | – |
|
4532
ARK Web x.0 ETF
ARKW
$2.33B
| – | – |
-17,248
| Closed | -$1.31M |
|
4533
Arlo Technologies
ARLO
$1.9B
| – | – |
0
| – | – |
|
4534
Arm
ARM
$144B
| – | – |
0
| – | – |
|
4535
Aramark
ARMK
$10.3B
| – | – |
-26,252
| Closed | -$737K |
|
4536
Armata Pharmaceuticals
ARMP
$108M
| – | – |
0
| – | – |
|
4537
Archrock
AROC
$4.47B
| – | – |
-3,638
| Closed | -$56K |
|
4538
Arqit Quantum
ARQQ
$417M
| – | – |
-414
| Closed | -$4K |
|
4539
Array Technologies
ARRY
$1.39B
| – | – |
-15,863
| Closed | -$266K |
|