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
|
$32.1M |
| 2 |
Bausch Health
BHC
|
$18.4M |
| 3 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
$17.9M |
| 4 |
Chipotle Mexican Grill
CMG
|
$14.9M |
| 5 |
Amazon
AMZN
|
$13M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
$27.5M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$13.7M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$12.1M |
| 4 |
Netflix
NFLX
|
$10.7M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
$10.7M |
Sector Composition
| 1 | Consumer Discretionary | 17.29% |
| 2 | Healthcare | 13.74% |
| 3 | Technology | 12.76% |
| 4 | Communication Services | 12.12% |
| 5 | Industrials | 10.49% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
3476
Ametek
AME
$42.6B
| – | – |
0
| – | – |
|
3477
Amgen
AMGN
$153B
| – | – |
-43,906
| Closed | -$6.07M |
|
3478
Alerian MLP ETF
AMLP
$10.6B
| – | – |
-13,267
| Closed | -$165K |
|
3479
Ameriprise Financial
AMP
$47.8B
| – | – |
-1,173
| Closed | -$128K |
|
3480
Amphastar Pharmaceuticals
AMPH
$1.37B
| – | – |
0
| – | – |
|
|
AMRN
3481
Amarin Corp
AMRN
$311M
| – | – |
-17,918
| Closed | -$34K |
|
3482
American Tower
AMT
$91.9B
| – | – |
-7,898
| Closed | -$694K |
|
3483
America Movil
AMX
$58.9B
| – | – |
-4,385
| Closed | -$72K |
|
3484
AngioDynamics
ANGO
$432M
| – | – |
0
| – | – |
|
3485
Sphere 3D
ANY
$17.2M
| – | – |
0
| – | – |
|
3486
Aon
AON
$80.6B
| – | – |
-7,685
| Closed | -$680K |
|
3487
Artivion
AORT
$2.04B
| – | – |
0
| – | – |
|