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 | |
|---|---|---|---|---|---|---|
|
PVTL
426
DELISTED
Pivotal Software, Inc.
PVTL
| $569K | ﹤0.01% |
29,062
-1,673
| -5% | -$32.8K |
|
427
Progress Software
PRGS
$1.86B
| $567K | ﹤0.01% |
16,072
+10,678
| +198% | +$377K |
|
|
XOG
428
DELISTED
Extraction Oil & Gas, Inc. Common Stock
XOG
| $567K | ﹤0.01% |
50,264
-6,212
| -11% | -$70.1K |
|
|
I
429
DELISTED
INTELSAT S. A.
I
| $566K | ﹤0.01% |
18,873
-67,297
| -78% | -$2.02M |
|
430
Guess, Inc.
GES
$868M
| $564K | ﹤0.01% |
24,998
+692
| +3% | +$15.6K |
|
431
Macerich
MAC
$4.54B
| $560K | ﹤0.01% |
10,130
+6,176
| +156% | +$341K |
|
432
The Communication Services Select Sector SPDR Fund
XLC
$26.1B
| $560K | ﹤0.01% |
+11,435
| New | +$560K |
|
433
Synopsys
SNPS
$74.5B
| $558K | ﹤0.01% |
+5,664
| New | +$558K |
|
434
Banco Bradesco
BBD
$33.5B
| $554K | ﹤0.01% |
+125,137
| New | +$554K |
|
435
WisdomTree India Earnings Fund ETF
EPI
$2.93B
| $552K | ﹤0.01% |
22,899
+3,716
| +19% | +$89.6K |
|
436
MaxLinear
MXL
$1.42B
| $547K | ﹤0.01% |
27,533
+24,978
| +978% | +$496K |
|
437
GameStop
GME
$11.1B
| $546K | ﹤0.01% |
+143,140
| New | +$546K |
|
438
Treehouse Foods
THS
$883M
| $546K | ﹤0.01% |
11,421
+10,776
| +1,671% | +$515K |
|
439
Church & Dwight Co
CHD
$22.7B
| $545K | ﹤0.01% |
+9,181
| New | +$545K |
|
440
Direxion Daily FTSE China Bull 3X Shares
YINN
$1.14B
| $539K | ﹤0.01% |
+1,132
| New | +$539K |
|
|
WCG
441
DELISTED
Wellcare Health Plans, Inc.
WCG
| $536K | ﹤0.01% |
+1,673
| New | +$536K |
|
442
MKS Inc. Common Stock
MKSI
$7.4B
| $535K | ﹤0.01% |
6,683
-642
| -9% | -$51.4K |
|
443
Artivion
AORT
$1.99B
| $532K | ﹤0.01% |
15,117
+14,231
| +1,606% | +$501K |
|
444
Teradata
TDC
$2.01B
| $526K | ﹤0.01% |
13,954
+12,377
| +785% | +$467K |
|
445
NOV
NOV
$4.85B
| $518K | ﹤0.01% |
12,026
+7,826
| +186% | +$337K |
|
|
BEL
446
DELISTED
Belmond Ltd.
BEL
| $517K | ﹤0.01% |
28,339
+20,183
| +247% | +$368K |
|
447
AngloGold Ashanti
AU
$32.3B
| $516K | ﹤0.01% |
60,160
+44,409
| +282% | +$381K |
|
448
PDF Solutions
PDFS
$784M
| $514K | ﹤0.01% |
57,009
+53,964
| +1,772% | +$487K |
|
|
TIVO
449
DELISTED
Tivo Inc
TIVO
| $514K | ﹤0.01% |
41,315
-7,780
| -16% | -$96.8K |
|
|
TSG
450
DELISTED
The Stars Group Inc.
TSG
| $514K | ﹤0.01% |
20,652
+8,102
| +65% | +$202K |
|