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 |
Financial Select Sector SPDR Fund
XLF
|
+$42.3M |
| 2 |
Shopify
SHOP
|
+$37.4M |
| 3 |
Verizon
VZ
|
+$34M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Merck
MRK
|
+$28M |
Top Sells
| 1 |
AMC Entertainment Holdings
AMC
|
+$38.3M |
| 2 |
Carnival Corp
CCL
|
+$37.6M |
| 3 |
GE Aerospace
GE
|
+$33M |
| 4 |
Advanced Micro Devices
AMD
|
+$30.6M |
| 5 |
Micron Technology
MU
|
+$28.3M |
Sector Composition
| 1 | Technology | 20.53% |
| 2 | Consumer Discretionary | 13.81% |
| 3 | Healthcare | 11.39% |
| 4 | Communication Services | 7.32% |
| 5 | Industrials | 6.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1401
Cue Biopharma
CUE
$57M
| $130K | ﹤0.01% |
11,535
+4,124
| +56% | +$46.5K |
|
1402
Gran Tierra Energy
GTE
$136M
| $130K | ﹤0.01% |
17,136
+8,280
| +93% | +$62.8K |
|
1403
MKS Inc. Common Stock
MKSI
$7.73B
| $130K | ﹤0.01% |
749
-383
| -34% | -$66.5K |
|
1404
Envista
NVST
$3.49B
| $130K | ﹤0.01% |
2,895
-27,958
| -91% | -$1.26M |
|
1405
ProQR Therapeutics
PRQR
$231M
| $130K | ﹤0.01% |
+16,291
| New | +$130K |
|
1406
SelectQuote
SLQT
$361M
| $130K | ﹤0.01% |
+14,452
| New | +$130K |
|
1407
BBVA Argentina
BBAR
$1.84B
| $129K | ﹤0.01% |
41,146
-3,575
| -8% | -$11.2K |
|
1408
Cabaletta Bio
CABA
$168M
| $129K | ﹤0.01% |
34,238
+28,657
| +513% | +$108K |
|
1409
HarborOne Bancorp
HONE
$563M
| $129K | ﹤0.01% |
8,701
+8,690
| +79,000% | +$129K |
|
|
NM
1410
DELISTED
Navios Maritime Holdings Inc.
NM
| $129K | ﹤0.01% |
34,977
+14,711
| +73% | +$54.3K |
|
|
ATNX
1411
DELISTED
Athenex, Inc. Common Stock
ATNX
| $129K | ﹤0.01% |
4,750
+4,715
| +13,471% | +$128K |
|
1412
Enova International
ENVA
$2.88B
| $128K | ﹤0.01% |
3,143
-22,927
| -88% | -$934K |
|
1413
FormFactor
FORM
$2.32B
| $128K | ﹤0.01% |
+2,810
| New | +$128K |
|
1414
Fastly
FSLY
$1.14B
| $128K | ﹤0.01% |
3,628
-144,538
| -98% | -$5.1M |
|
1415
Hippo Holdings
HIPO
$933M
| $128K | ﹤0.01% |
+1,813
| New | +$128K |
|
1416
New York Times
NYT
$9.59B
| $128K | ﹤0.01% |
+2,657
| New | +$128K |
|
|
MMAT
1417
DELISTED
Meta Materials Inc. Common Stock
MMAT
| $128K | ﹤0.01% |
521
-500
| -49% | -$123K |
|
1418
WisdomTree Emerging Markets High Dividend Fund
DEM
$3.18B
| $127K | ﹤0.01% |
2,945
-5,731
| -66% | -$247K |
|
1419
Delek Logistics
DKL
$2.41B
| $127K | ﹤0.01% |
+2,978
| New | +$127K |
|
1420
EXL Service
EXLS
$7.04B
| $127K | ﹤0.01% |
+4,405
| New | +$127K |
|
|
MTA
1421
Metalla Royalty & Streaming
MTA
$527M
| $127K | ﹤0.01% |
18,372
+12,135
| +195% | +$83.9K |
|
1422
NMI Holdings
NMIH
$3.08B
| $127K | ﹤0.01% |
5,834
-21,062
| -78% | -$458K |
|
1423
Ocular Therapeutix
OCUL
$2.23B
| $127K | ﹤0.01% |
18,297
-12,709
| -41% | -$88.2K |
|
|
REUN
1424
DELISTED
Reunion Neuroscience Inc. Common Shares
REUN
| $127K | ﹤0.01% |
+10,395
| New | +$127K |
|
1425
Foghorn Therapeutics
FHTX
$293M
| $126K | ﹤0.01% |
+5,548
| New | +$126K |
|