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
|
$80M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$45.3M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$38.8M |
| 4 |
Amazon
AMZN
|
$38.6M |
| 5 |
Tesla
TSLA
|
$36M |
Top Sells
| 1 |
Alibaba
BABA
|
$46.4M |
| 2 |
Boeing
BA
|
$29.8M |
| 3 |
SPDR Gold Trust
GLD
|
$18.2M |
| 4 |
Biogen
BIIB
|
$15.8M |
| 5 |
NVIDIA
NVDA
|
$14.3M |
Sector Composition
| 1 | Technology | 22.73% |
| 2 | Consumer Discretionary | 17.54% |
| 3 | Communication Services | 10.03% |
| 4 | Healthcare | 9.29% |
| 5 | Industrials | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
376
Exelixis
EXEL
$10.2B
| $677K | ﹤0.01% |
38,454
+31,492
| +452% | +$554K |
|
|
ONC
377
BeOne Medicines Ltd. American Depositary Shares
ONC
$37.6B
| $674K | ﹤0.01% |
4,070
+2,937
| +259% | +$486K |
|
378
Direxion Daily Financial Bull 3x Shares
FAS
$2.59B
| $673K | ﹤0.01% |
+7,112
| New | +$673K |
|
|
JMIA
379
Jumia Technologies
JMIA
$1.09B
| $673K | ﹤0.01% |
100,148
+86,153
| +616% | +$579K |
|
|
IAA
380
DELISTED
IAA, Inc. Common Stock
IAA
| $667K | ﹤0.01% |
14,190
+6,442
| +83% | +$303K |
|
381
Iovance Biotherapeutics
IOVA
$901M
| $666K | ﹤0.01% |
24,066
+10,323
| +75% | +$286K |
|
382
DHT Holdings
DHT
$2B
| $662K | ﹤0.01% |
+80,019
| New | +$662K |
|
383
Forrester Research
FORR
$187M
| $662K | ﹤0.01% |
15,879
+9,004
| +131% | +$375K |
|
384
Celanese
CE
$5.34B
| $660K | ﹤0.01% |
5,364
+1,510
| +39% | +$186K |
|
385
Rapid7
RPD
$1.32B
| $655K | ﹤0.01% |
11,705
+11,615
| +12,906% | +$650K |
|
386
DURECT Corp
DRRX
$59.3M
| $654K | ﹤0.01% |
+17,218
| New | +$654K |
|
387
Virgin Galactic
SPCE
$185M
| $653K | ﹤0.01% |
+2,829
| New | +$653K |
|
|
TWOU
388
DELISTED
2U, Inc.
TWOU
| $652K | ﹤0.01% |
906
-295
| -25% | -$212K |
|
389
First American
FAF
$6.83B
| $650K | ﹤0.01% |
+11,159
| New | +$650K |
|
390
Wendy's
WEN
$1.97B
| $649K | ﹤0.01% |
29,229
-68,393
| -70% | -$1.52M |
|
391
Seagate
STX
$40B
| $647K | ﹤0.01% |
+10,874
| New | +$647K |
|
392
Marcus Corp
MCS
$483M
| $645K | ﹤0.01% |
20,318
+15,620
| +332% | +$496K |
|
393
Cencora
COR
$56.7B
| $642K | ﹤0.01% |
7,555
-13,225
| -64% | -$1.12M |
|
394
Alerian MLP ETF
AMLP
$10.5B
| $640K | ﹤0.01% |
15,060
+1,827
| +14% | +$77.6K |
|
395
Viasat
VSAT
$3.98B
| $640K | ﹤0.01% |
+8,754
| New | +$640K |
|
396
Verizon
VZ
$187B
| $635K | ﹤0.01% |
+10,349
| New | +$635K |
|
397
GameStop
GME
$10.1B
| $634K | ﹤0.01% |
417,156
+373,920
| +865% | +$568K |
|
398
Moderna
MRNA
$9.78B
| $634K | ﹤0.01% |
32,452
-25,499
| -44% | -$498K |
|
399
Direxion Daily Semiconductor Bear 3X Shares
SOXS
$1.43B
| $634K | ﹤0.01% |
25
+24
| +2,400% | +$609K |
|
400
iShares Russell 1000 Value ETF
IWD
$63.5B
| $627K | ﹤0.01% |
4,601
+3,886
| +543% | +$530K |
|