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 |
Tesla
TSLA
|
+$27.1M |
| 2 |
Netflix
NFLX
|
+$24.7M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$20.1M |
| 4 |
TWX
Time Warner Inc
TWX
|
+$18.3M |
| 5 |
Alibaba
BABA
|
+$14.8M |
Top Sells
| 1 |
Amazon
AMZN
|
+$71.9M |
| 2 |
Micron Technology
MU
|
+$47.7M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$26.3M |
| 4 |
Boeing
BA
|
+$21M |
| 5 |
Citigroup
C
|
+$19.6M |
Sector Composition
| 1 | Consumer Discretionary | 15.64% |
| 2 | Communication Services | 14.16% |
| 3 | Technology | 12.46% |
| 4 | Financials | 10.94% |
| 5 | Healthcare | 10.33% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
401
Dycom Industries
DY
$7.31B
| $465K | 0.02% |
4,325
+1,157
| +37% | +$124K |
|
402
Invesco DB US Dollar Index Bullish Fund
UUP
$162M
| $462K | 0.02% |
19,577
-28,950
| -60% | -$683K |
|
403
Nutrien
NTR
$27.9B
| $461K | 0.02% |
+9,760
| New | +$461K |
|
404
Zillow
Z
$21.1B
| $455K | 0.02% |
+8,460
| New | +$455K |
|
405
Immersion
IMMR
$231M
| $453K | 0.02% |
37,945
-1,896
| -5% | -$22.6K |
|
406
Thor Industries
THO
$5.92B
| $453K | 0.02% |
+3,934
| New | +$453K |
|
407
Ametek
AME
$43.6B
| $452K | 0.02% |
5,962
-5,609
| -48% | -$425K |
|
408
Edison International
EIX
$21.1B
| $452K | 0.02% |
7,101
-6,697
| -49% | -$426K |
|
409
Kratos Defense & Security Solutions
KTOS
$10.9B
| $451K | 0.02% |
43,889
+38,210
| +673% | +$393K |
|
410
Essential Utilities
WTRG
$10.8B
| $449K | 0.02% |
13,192
+11,666
| +764% | +$397K |
|
411
Ambac
AMBC
$426M
| $448K | 0.02% |
28,630
+2,091
| +8% | +$32.7K |
|
412
iShares MSCI China ETF
MCHI
$8.12B
| $448K | 0.02% |
+6,535
| New | +$448K |
|
413
Calix
CALX
$3.99B
| $446K | 0.02% |
65,182
+42,366
| +186% | +$290K |
|
414
Carriage Services
CSV
$681M
| $446K | 0.02% |
+16,144
| New | +$446K |
|
415
Dollar General
DG
$23B
| $443K | 0.02% |
4,744
-12,888
| -73% | -$1.2M |
|
416
Brighthouse Financial
BHF
$2.48B
| $441K | 0.02% |
8,580
-346
| -4% | -$17.8K |
|
417
Intellia Therapeutics
NTLA
$1.28B
| $440K | 0.02% |
20,877
-26,841
| -56% | -$566K |
|
418
iShares Latin America 40 ETF
ILF
$1.77B
| $438K | 0.02% |
+11,663
| New | +$438K |
|
|
CNSL
419
DELISTED
Consolidated Communications Holdings, Inc.
CNSL
| $436K | 0.02% |
39,807
+2,819
| +8% | +$30.9K |
|
|
TRTN
420
DELISTED
Triton International Limited
TRTN
| $436K | 0.02% |
14,255
+6,445
| +83% | +$197K |
|
421
Direxion Daily S&P 500 Bull 3x Shares
SPXL
$5.63B
| $433K | 0.02% |
10,496
-505
| -5% | -$20.8K |
|
422
National Health Investors
NHI
$3.73B
| $432K | 0.02% |
6,434
+623
| +11% | +$41.8K |
|
423
New York Times
NYT
$9.58B
| $432K | 0.02% |
+17,934
| New | +$432K |
|
424
ResMed
RMD
$40.9B
| $432K | 0.02% |
+4,396
| New | +$432K |
|
425
WisdomTree
WT
$2B
| $430K | 0.02% |
46,927
+32,474
| +225% | +$298K |
|