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 | |
|---|---|---|---|---|---|---|
526
Direxion Daily Junior Gold Miners Index Bull 2X Shares
JNUG
$495M
| $410K | ﹤0.01% |
1,111
+684
| +160% | +$252K |
|
527
NovoCure
NVCR
$1.37B
| $410K | ﹤0.01% |
7,842
+7,409
| +1,711% | +$387K |
|
528
Texas Roadhouse
TXRH
$11B
| $410K | ﹤0.01% |
5,926
+5,029
| +561% | +$348K |
|
529
Western Midstream Partners
WES
$14.6B
| $410K | ﹤0.01% |
+13,705
| New | +$410K |
|
530
Westlake Corp
WLK
$10.9B
| $407K | ﹤0.01% |
+4,904
| New | +$407K |
|
531
abrdn Physical Gold Shares ETF
SGOL
$5.8B
| $406K | ﹤0.01% |
35,300
+33,990
| +2,595% | +$391K |
|
532
CBRE Group
CBRE
$48.4B
| $404K | ﹤0.01% |
9,163
+4,697
| +105% | +$207K |
|
533
Diamondback Energy
FANG
$40.4B
| $404K | ﹤0.01% |
2,994
-32,665
| -92% | -$4.41M |
|
534
Olin
OLN
$2.92B
| $404K | ﹤0.01% |
+15,740
| New | +$404K |
|
535
Vulcan Materials
VMC
$38.9B
| $404K | ﹤0.01% |
3,639
-8,898
| -71% | -$988K |
|
536
Flowserve
FLS
$7.35B
| $402K | ﹤0.01% |
+7,368
| New | +$402K |
|
|
NETI
537
DELISTED
Eneti Inc.
NETI
| $400K | ﹤0.01% |
+5,937
| New | +$400K |
|
538
Sociedad Química y Minera de Chile
SQM
$12B
| $396K | ﹤0.01% |
8,676
-18,318
| -68% | -$836K |
|
|
FRC
539
DELISTED
First Republic Bank
FRC
| $396K | ﹤0.01% |
4,132
+3,761
| +1,014% | +$360K |
|
540
Vanguard High Dividend Yield ETF
VYM
$64.7B
| $395K | ﹤0.01% |
+4,539
| New | +$395K |
|
541
Permian Resources
PR
$9.99B
| $394K | ﹤0.01% |
18,069
+6,950
| +63% | +$152K |
|
542
Essex Property Trust
ESS
$17B
| $391K | ﹤0.01% |
1,585
-2,735
| -63% | -$675K |
|
543
Iridium Communications
IRDM
$1.91B
| $391K | ﹤0.01% |
+17,406
| New | +$391K |
|
|
ATTU
544
DELISTED
Attunity Ltd
ATTU
| $391K | ﹤0.01% |
20,711
-10,941
| -35% | -$207K |
|
545
Deckers Outdoor
DECK
$16.9B
| $388K | ﹤0.01% |
+19,644
| New | +$388K |
|
546
Energy Transfer Partners
ET
$59.8B
| $387K | ﹤0.01% |
22,210
+16,605
| +296% | +$289K |
|
|
PBCT
547
DELISTED
People's United Financial Inc
PBCT
| $385K | ﹤0.01% |
22,502
+20,033
| +811% | +$343K |
|
548
Alexandria Real Estate Equities
ARE
$14.3B
| $384K | ﹤0.01% |
3,059
+2,911
| +1,967% | +$365K |
|
549
PVH
PVH
$3.93B
| $384K | ﹤0.01% |
+2,666
| New | +$384K |
|
|
ZAYO
550
DELISTED
Zayo Group Holdings, Inc.
ZAYO
| $382K | ﹤0.01% |
11,018
+9,936
| +918% | +$344K |
|