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
|
+$35.2M |
| 2 |
Micron Technology
MU
|
+$32.9M |
| 3 |
Berkshire Hathaway Class B
BRK.B
|
+$29.5M |
| 4 |
NVIDIA
NVDA
|
+$22.9M |
| 5 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$22M |
Top Sells
| 1 |
TWX
Time Warner Inc
TWX
|
+$34.8M |
| 2 |
Amazon
AMZN
|
+$33.4M |
| 3 |
Tesla
TSLA
|
+$19.8M |
| 4 |
Netflix
NFLX
|
+$17.7M |
| 5 |
TWTR
Twitter, Inc.
TWTR
|
+$13.5M |
Sector Composition
| 1 | Technology | 20.43% |
| 2 | Consumer Discretionary | 15.24% |
| 3 | Communication Services | 12% |
| 4 | Financials | 10.18% |
| 5 | Industrials | 9.87% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
LGCY
1426
DELISTED
Legacy Reserves Inc. Common Stock
LGCY
| $29K | ﹤0.01% |
4,340
+1,670
| +63% | +$11.2K |
|
1427
ARK Innovation ETF
ARKK
$7.38B
| $28K | ﹤0.01% |
636
-117
| -16% | -$5.15K |
|
1428
Ovintiv
OVV
$10.9B
| $28K | ﹤0.01% |
431
-2,965
| -87% | -$193K |
|
1429
Pegasystems
PEGA
$9.94B
| $28K | ﹤0.01% |
1,058
-22,558
| -96% | -$597K |
|
|
TBI
1430
Trueblue
TBI
$176M
| $28K | ﹤0.01% |
1,049
+678
| +183% | +$18.1K |
|
1431
ReposiTrak
TRAK
$314M
| $28K | ﹤0.01% |
+3,548
| New | +$28K |
|
1432
Vericel Corp
VCEL
$1.69B
| $28K | ﹤0.01% |
2,980
+916
| +44% | +$8.61K |
|
|
DNR
1433
DELISTED
Denbury Resources, Inc.
DNR
| $28K | ﹤0.01% |
5,924
-20,199
| -77% | -$95.5K |
|
|
PETX
1434
DELISTED
Aratana Therapeutics, Inc.
PETX
| $28K | ﹤0.01% |
6,686
-5,989
| -47% | -$25.1K |
|
|
LPNT
1435
DELISTED
LifePoint Health, Inc.
LPNT
| $28K | ﹤0.01% |
589
+131
| +29% | +$6.23K |
|
1436
Adeia
ADEA
$1.71B
| $27K | ﹤0.01% |
6,426
-2,245
| -26% | -$9.43K |
|
1437
Camtek
CAMT
$3.84B
| $27K | ﹤0.01% |
3,768
-34,596
| -90% | -$248K |
|
1438
DNOW Inc
DNOW
$1.65B
| $27K | ﹤0.01% |
2,094
-10,726
| -84% | -$138K |
|
1439
IAMGOLD
IAG
$6.35B
| $27K | ﹤0.01% |
4,749
+1,516
| +47% | +$8.62K |
|
|
KNDI
1440
Kandi Technologies Group
KNDI
$115M
| $27K | ﹤0.01% |
6,571
-8,125
| -55% | -$33.4K |
|
1441
Ingevity
NGVT
$2.14B
| $27K | ﹤0.01% |
344
+196
| +132% | +$15.4K |
|
1442
WPP
WPP
$5.87B
| $27K | ﹤0.01% |
348
-7,969
| -96% | -$618K |
|
|
CBD
1443
DELISTED
Companhia Brasileira de Distribuicao
CBD
| $27K | ﹤0.01% |
+1,400
| New | +$27K |
|
|
ARAV
1444
DELISTED
Aravive, Inc. Common Stock
ARAV
| $27K | ﹤0.01% |
+2,288
| New | +$27K |
|
|
VIVO
1445
DELISTED
Meridian Bioscience Inc
VIVO
| $27K | ﹤0.01% |
1,710
-376
| -18% | -$5.94K |
|
|
ELGX
1446
DELISTED
Endologix Inc
ELGX
| $27K | ﹤0.01% |
478
+342
| +251% | +$19.3K |
|
|
ITG
1447
DELISTED
Investment Technology Group Inc
ITG
| $27K | ﹤0.01% |
1,332
+883
| +197% | +$17.9K |
|
1448
Axos Financial
AX
$5.21B
| $26K | ﹤0.01% |
+653
| New | +$26K |
|
1449
Blink Charging
BLNK
$143M
| $26K | ﹤0.01% |
+5,127
| New | +$26K |
|
1450
Cato Corp
CATO
$90M
| $26K | ﹤0.01% |
1,093
-3,882
| -78% | -$92.3K |
|