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 |
Amazon
AMZN
|
+$158M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$69.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$57.4M |
| 4 |
Citigroup
C
|
+$23.4M |
| 5 |
Goldman Sachs
GS
|
+$23M |
Top Sells
| 1 |
Apple
AAPL
|
+$49.8M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
+$43.2M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$42.2M |
| 4 |
Micron Technology
MU
|
+$26.1M |
| 5 |
Adobe
ADBE
|
+$21M |
Sector Composition
| 1 | Consumer Discretionary | 20.63% |
| 2 | Communication Services | 16.3% |
| 3 | Technology | 12.42% |
| 4 | Industrials | 9.24% |
| 5 | Healthcare | 8.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1001
Xcel Energy
XEL
$43.4B
| $111K | ﹤0.01% |
+2,372
| New | +$111K |
|
|
BECN
1002
DELISTED
Beacon Roofing Supply, Inc.
BECN
| $111K | ﹤0.01% |
+3,072
| New | +$111K |
|
|
NUVA
1003
DELISTED
NuVasive, Inc.
NUVA
| $111K | ﹤0.01% |
+1,569
| New | +$111K |
|
1004
Rocket Pharmaceuticals
RCKT
$351M
| $110K | ﹤0.01% |
4,497
+2,399
| +114% | +$58.7K |
|
1005
Ryanair
RYAAY
$31.2B
| $110K | ﹤0.01% |
2,873
-1,097
| -28% | -$42K |
|
1006
Direxion Daily FTSE China Bear 3X Shares
YANG
$163M
| $110K | ﹤0.01% |
+97
| New | +$110K |
|
1007
Hartford Financial Services
HIG
$37.4B
| $109K | ﹤0.01% |
2,184
-41
| -2% | -$2.05K |
|
1008
Direxion Daily S&P 500 Bull 3x Shares
SPXL
$5.82B
| $109K | ﹤0.01% |
2,017
-21,019
| -91% | -$1.14M |
|
|
BPT
1009
DELISTED
BP Prudhoe Bay Royalty Trust
BPT
| $107K | ﹤0.01% |
3,109
-1,896
| -38% | -$65.3K |
|
1010
Dycom Industries
DY
$7.46B
| $107K | ﹤0.01% |
1,270
-7,584
| -86% | -$639K |
|
1011
Great Lakes Dredge & Dock
GLDD
$824M
| $107K | ﹤0.01% |
17,325
-6,803
| -28% | -$42K |
|
1012
Interpublic Group of Companies
IPG
$9.72B
| $107K | ﹤0.01% |
4,713
+3,267
| +226% | +$74.2K |
|
1013
OSI Systems
OSIS
$3.96B
| $107K | ﹤0.01% |
+1,408
| New | +$107K |
|
1014
RE/MAX Holdings
RMAX
$195M
| $107K | ﹤0.01% |
+2,433
| New | +$107K |
|
1015
Crane NXT
CXT
$3.47B
| $106K | ﹤0.01% |
+3,129
| New | +$106K |
|
|
ESIO
1016
DELISTED
Electro Scientific Industries
ESIO
| $106K | ﹤0.01% |
6,116
+3,550
| +138% | +$61.5K |
|
1017
Cadence Design Systems
CDNS
$94.1B
| $105K | ﹤0.01% |
+2,323
| New | +$105K |
|
|
IBKC
1018
DELISTED
IBERIABANK Corp
IBKC
| $105K | ﹤0.01% |
+1,293
| New | +$105K |
|
|
CTIC
1019
DELISTED
CTI BioPharma Corp. (DE) Common Stock
CTIC
| $105K | ﹤0.01% |
48,819
+47,570
| +3,809% | +$102K |
|
1020
HEICO
HEI
$44.7B
| $104K | ﹤0.01% |
1,132
+535
| +90% | +$49.2K |
|
1021
OFG Bancorp
OFG
$1.95B
| $104K | ﹤0.01% |
+6,464
| New | +$104K |
|
1022
TEGNA Inc
TGNA
$3.39B
| $104K | ﹤0.01% |
8,721
-723
| -8% | -$8.62K |
|
|
DMK
1023
DELISTED
DMK Pharmaceuticals Corporation Common Stock
DMK
| $104K | ﹤0.01% |
+426
| New | +$104K |
|
1024
Calix
CALX
$4.01B
| $103K | ﹤0.01% |
12,833
-12,559
| -49% | -$101K |
|
1025
Entergy
ETR
$40.4B
| $103K | ﹤0.01% |
2,548
-6,424
| -72% | -$260K |
|