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 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$278M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$84.4M |
| 3 |
NVIDIA
NVDA
|
+$76.9M |
| 4 |
TSMC
TSM
|
+$74.9M |
| 5 |
Amazon
AMZN
|
+$53.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$497M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
+$73.7M |
| 3 |
Alibaba
BABA
|
+$49M |
| 4 |
Advanced Micro Devices
AMD
|
+$48.1M |
| 5 |
Uber
UBER
|
+$41.8M |
Sector Composition
| 1 | Technology | 22.9% |
| 2 | Consumer Discretionary | 12.26% |
| 3 | Healthcare | 9.52% |
| 4 | Communication Services | 8.42% |
| 5 | Financials | 7.07% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1476
Cousins Properties
CUZ
$4.94B
| $28K | ﹤0.01% |
961
-84
| -8% | -$2.45K |
|
1477
ProShares UltraShort Dow 30
DXD
$52.3M
| $28K | ﹤0.01% |
1,039
+816
| +366% | +$22K |
|
1478
Embecta
EMBC
$878M
| $28K | ﹤0.01% |
2,203
+2,025
| +1,138% | +$25.7K |
|
1479
Hain Celestial
HAIN
$194M
| $28K | ﹤0.01% |
6,983
+5,544
| +385% | +$22.2K |
|
1480
Mitek Systems
MITK
$467M
| $28K | ﹤0.01% |
+3,477
| New | +$28K |
|
1481
Direxion Daily NVDA Bull 2X Shares
NVDU
$695M
| $28K | ﹤0.01% |
539
-2,188
| -80% | -$114K |
|
1482
Owens & Minor
OMI
$412M
| $28K | ﹤0.01% |
3,187
+2,200
| +223% | +$19.3K |
|
|
RDUS
1483
DELISTED
Radius Recycling
RDUS
| $28K | ﹤0.01% |
972
+287
| +42% | +$8.27K |
|
1484
Suzano
SUZ
$11.7B
| $28K | ﹤0.01% |
3,015
+1,657
| +122% | +$15.4K |
|
1485
Tandem Diabetes Care
TNDM
$829M
| $28K | ﹤0.01% |
+1,503
| New | +$28K |
|
1486
Vanguard Intermediate-Term Corporate Bond ETF
VCIT
$55B
| $28K | ﹤0.01% |
351
-391
| -53% | -$31.2K |
|
1487
Aldeyra Therapeutics
ALDX
$324M
| $27K | ﹤0.01% |
4,711
-40,521
| -90% | -$232K |
|
1488
Axogen
AXGN
$755M
| $27K | ﹤0.01% |
+1,505
| New | +$27K |
|
1489
Cullinan Oncology
CGEM
$386M
| $27K | ﹤0.01% |
3,598
+2,195
| +156% | +$16.5K |
|
1490
Fox Factory Holding Corp
FOXF
$1.14B
| $27K | ﹤0.01% |
1,173
+165
| +16% | +$3.8K |
|
1491
CGI
GIB
$20.8B
| $27K | ﹤0.01% |
272
+207
| +318% | +$20.5K |
|
1492
MeiraGTx Holdings
MGTX
$612M
| $27K | ﹤0.01% |
4,031
+1,783
| +79% | +$11.9K |
|
1493
Energy Vault
NRGV
$371M
| $27K | ﹤0.01% |
39,113
+2,979
| +8% | +$2.06K |
|
1494
ProShares UltraShort QQQ
QID
$274M
| $27K | ﹤0.01% |
730
-39,206
| -98% | -$1.45M |
|
1495
Smith Micro Software
SMSI
$14.7M
| $27K | ﹤0.01% |
38,083
+2,601
| +7% | +$1.84K |
|
1496
Millicom
TIGO
$7.94B
| $27K | ﹤0.01% |
+921
| New | +$27K |
|
1497
SPDR S&P Pharmaceuticals ETF
XPH
$184M
| $27K | ﹤0.01% |
+627
| New | +$27K |
|
1498
ArcBest
ARCB
$1.6B
| $26K | ﹤0.01% |
370
-41,856
| -99% | -$2.94M |
|
|
CAN
1499
Canaan Creative
CAN
$387M
| $26K | ﹤0.01% |
+30,098
| New | +$26K |
|
1500
Deluxe
DLX
$881M
| $26K | ﹤0.01% |
+1,662
| New | +$26K |
|