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 |
Microsoft
MSFT
|
$101M |
| 2 |
NVIDIA
NVDA
|
$66M |
| 3 |
Citigroup
C
|
$51.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
$42.7M |
| 5 |
SPDR Gold Trust
GLD
|
$39.4M |
Top Sells
| 1 |
Apple
AAPL
|
$411M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
$64M |
| 3 |
Meta Platforms (Facebook)
META
|
$39.8M |
| 4 |
iShares Core S&P 500 ETF
IVV
|
$34.3M |
| 5 |
PayPal
PYPL
|
$32.9M |
Sector Composition
| 1 | Technology | 17.4% |
| 2 | Financials | 12.04% |
| 3 | Consumer Discretionary | 10.17% |
| 4 | Healthcare | 8.63% |
| 5 | Industrials | 6.03% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
4976
Afya
AFYA
$1.37B
| – | – |
0
| – | – |
|
4977
Agrify
AGFY
| – | – |
0
| – | – |
|
4978
Federal Agricultural Mortgage
AGM
$2.24B
| – | – |
-184
| Closed | -$17K |
|
4979
AMERISAFE
AMSF
$875M
| – | – |
0
| – | – |
|
4980
Aemetis
AMTX
$157M
| – | – |
0
| – | – |
|
4981
America Movil
AMX
$58.9B
| – | – |
-11,776
| Closed | -$240K |
|
4982
AnaptysBio
ANAB
$630M
| – | – |
0
| – | – |
|
4983
Arista Networks
ANET
$173B
| – | – |
-840
| Closed | -$78K |
|
4984
Bionano Genomics
BNGO
$18.2M
| – | – |
0
| – | – |
|
4985
Chemed
CHE
$6.7B
| – | – |
0
| – | – |
|
4986
Chefs' Warehouse
CHEF
$2.6B
| – | – |
0
| – | – |
|
4987
Choice Hotels
CHH
$5.42B
| – | – |
0
| – | – |
|
4988
Chord Energy
CHRD
$6.12B
| – | – |
-201
| Closed | -$24K |
|
4989
Evogene
EVGN
$10.8M
| $0 | ﹤0.01% |
+484
| New | – |
|
|
EVRI
4990
DELISTED
Everi Holdings
EVRI
| – | – |
-59
| Closed | – |
|
4991
iShares US Home Construction ETF
ITB
$3.18B
| – | – |
-22,661
| Closed | -$1.19M |
|
4992
Milestone Pharmaceuticals
MIST
$151M
| – | – |
0
| – | – |
|