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 | |
|---|---|---|---|---|---|---|
451
Omnicom Group
OMC
$15.4B
| $518K | ﹤0.01% |
+6,796
| New | +$518K |
|
|
CBPO
452
DELISTED
China Biologic Products Holdings, Inc.
CBPO
| $514K | ﹤0.01% |
5,177
+5,175
| +258,750% | +$514K |
|
453
RTX Corp
RTX
$211B
| $512K | ﹤0.01% |
6,518
-10,929
| -63% | -$858K |
|
454
Enanta Pharmaceuticals
ENTA
$189M
| $508K | ﹤0.01% |
+4,390
| New | +$508K |
|
455
MasTec
MTZ
$14B
| $508K | ﹤0.01% |
+10,025
| New | +$508K |
|
456
Surmodics
SRDX
$463M
| $505K | ﹤0.01% |
+9,151
| New | +$505K |
|
|
CLVS
457
DELISTED
Clovis Oncology, Inc.
CLVS
| $504K | ﹤0.01% |
11,100
-6,002
| -35% | -$273K |
|
458
Dillards
DDS
$9B
| $503K | ﹤0.01% |
+5,323
| New | +$503K |
|
459
Becton Dickinson
BDX
$55.1B
| $501K | ﹤0.01% |
+2,144
| New | +$501K |
|
460
ON Semiconductor
ON
$20.1B
| $498K | ﹤0.01% |
22,439
-11,288
| -33% | -$251K |
|
461
Gen Digital
GEN
$18.2B
| $497K | ﹤0.01% |
24,078
+13,988
| +139% | +$289K |
|
462
uniQure
QURE
$985M
| $495K | ﹤0.01% |
13,111
-22,822
| -64% | -$862K |
|
463
Liberty Global Class A
LBTYA
$4.05B
| $494K | ﹤0.01% |
17,952
+15,047
| +518% | +$414K |
|
464
Gyre Therapeutics
GYRE
$698M
| $492K | ﹤0.01% |
5,632
+3,952
| +235% | +$345K |
|
465
iShares US Home Construction ETF
ITB
$3.35B
| $492K | ﹤0.01% |
+12,902
| New | +$492K |
|
466
Trane Technologies
TT
$92.1B
| $490K | ﹤0.01% |
+5,462
| New | +$490K |
|
|
PVG
467
DELISTED
PRETIUM RESOURCES INC.
PVG
| $488K | ﹤0.01% |
66,616
+38,969
| +141% | +$285K |
|
468
AstraZeneca
AZN
$253B
| $486K | ﹤0.01% |
13,865
-68,399
| -83% | -$2.4M |
|
469
Clean Harbors
CLH
$12.7B
| $485K | ﹤0.01% |
+8,740
| New | +$485K |
|
470
Akebia Therapeutics
AKBA
$785M
| $484K | ﹤0.01% |
48,518
+46,743
| +2,633% | +$466K |
|
471
Gerdau
GGB
$6.39B
| $484K | ﹤0.01% |
172,587
+100,357
| +139% | +$281K |
|
472
WisdomTree India Earnings Fund ETF
EPI
$2.89B
| $482K | ﹤0.01% |
19,183
+16,581
| +637% | +$417K |
|
473
Invesco CurrencyShares British Pound Sterling Trust
FXB
$90.8M
| $482K | ﹤0.01% |
+3,770
| New | +$482K |
|
474
Wheaton Precious Metals
WPM
$47.3B
| $482K | ﹤0.01% |
21,853
+3,740
| +21% | +$82.5K |
|
475
Cirrus Logic
CRUS
$5.94B
| $480K | ﹤0.01% |
+12,533
| New | +$480K |
|