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 | |
|---|---|---|---|---|---|---|
376
Becton Dickinson
BDX
$54.6B
| $674K | ﹤0.01% |
2,648
+504
| +24% | +$128K |
|
377
Cognizant
CTSH
$34.6B
| $670K | ﹤0.01% |
8,695
-7,604
| -47% | -$586K |
|
378
Ligand Pharmaceuticals
LGND
$3.22B
| $669K | ﹤0.01% |
3,908
+734
| +23% | +$126K |
|
|
BIG
379
DELISTED
Big Lots, Inc.
BIG
| $662K | ﹤0.01% |
+15,851
| New | +$662K |
|
380
Extreme Networks
EXTR
$2.92B
| $658K | ﹤0.01% |
120,217
+61,548
| +105% | +$337K |
|
381
CenterPoint Energy
CNP
$24.5B
| $655K | ﹤0.01% |
23,706
+23,608
| +24,090% | +$652K |
|
382
Axalta
AXTA
$6.8B
| $650K | ﹤0.01% |
22,309
-3,346
| -13% | -$97.5K |
|
383
Canadian Pacific Kansas City
CP
$68.6B
| $650K | ﹤0.01% |
15,350
+12,385
| +418% | +$524K |
|
|
KSU
384
DELISTED
Kansas City Southern
KSU
| $650K | ﹤0.01% |
+5,743
| New | +$650K |
|
385
Amphenol
APH
$143B
| $648K | ﹤0.01% |
+27,588
| New | +$648K |
|
386
Palo Alto Networks
PANW
$132B
| $646K | ﹤0.01% |
17,214
-118,194
| -87% | -$4.44M |
|
387
Markel Group
MKL
$24.4B
| $642K | ﹤0.01% |
541
-427
| -44% | -$507K |
|
388
BGC Group
BGC
$4.76B
| $641K | ﹤0.01% |
84,435
-64,483
| -43% | -$490K |
|
389
Equity Residential
EQR
$25.4B
| $639K | ﹤0.01% |
9,647
+4,104
| +74% | +$272K |
|
|
TLND
390
DELISTED
Talend S.A. American Depositary Shares
TLND
| $639K | ﹤0.01% |
+9,174
| New | +$639K |
|
391
EQT Corp
EQT
$31.4B
| $634K | ﹤0.01% |
26,365
+7,977
| +43% | +$192K |
|
392
Range Resources
RRC
$8.17B
| $634K | ﹤0.01% |
37,358
+15,497
| +71% | +$263K |
|
393
Eagle Materials
EXP
$7.42B
| $631K | ﹤0.01% |
+7,408
| New | +$631K |
|
394
SolarEdge
SEDG
$1.78B
| $631K | ﹤0.01% |
16,778
-12,061
| -42% | -$454K |
|
395
Vanguard FTSE Europe ETF
VGK
$27B
| $629K | ﹤0.01% |
11,204
+1,571
| +16% | +$88.2K |
|
396
Peabody Energy
BTU
$2.25B
| $626K | ﹤0.01% |
17,582
+12,744
| +263% | +$454K |
|
397
FTI Consulting
FCN
$5.41B
| $626K | ﹤0.01% |
+8,558
| New | +$626K |
|
398
Aramark
ARMK
$10.1B
| $623K | ﹤0.01% |
+20,076
| New | +$623K |
|
399
Enterprise Products Partners
EPD
$68.3B
| $619K | ﹤0.01% |
21,547
+20,216
| +1,519% | +$581K |
|
|
PE
400
DELISTED
PARSLEY ENERGY INC
PE
| $618K | ﹤0.01% |
21,141
+2,958
| +16% | +$86.5K |
|