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 | |
|---|---|---|---|---|---|---|
51
Mastercard
MA
$536B
| $4.6M | 0.01% |
20,670
-13,786
| -40% | -$3.07M |
|
52
Electronic Arts
EA
$42B
| $4.59M | 0.01% |
38,106
+10,962
| +40% | +$1.32M |
|
53
American Airlines Group
AAL
$8.87B
| $4.55M | 0.01% |
110,144
-5,849
| -5% | -$242K |
|
54
American International
AIG
$45.1B
| $4.42M | 0.01% |
82,997
+3,339
| +4% | +$178K |
|
55
Spotify
SPOT
$143B
| $4.37M | 0.01% |
24,148
+6,190
| +34% | +$1.12M |
|
56
IBM
IBM
$227B
| $4.36M | 0.01% |
30,178
-84,202
| -74% | -$12.2M |
|
|
57
Apple
AAPL
$3.54T
| $4.35M | 0.01% |
77,088
-882,612
| -92% | -$49.8M |
|
58
New Oriental
EDU
$7.98B
| $4.33M | 0.01% |
58,497
+14,492
| +33% | +$1.07M |
|
59
Halliburton
HAL
$18.4B
| $4.31M | 0.01% |
106,306
+47,589
| +81% | +$1.93M |
|
|
AABA
60
DELISTED
Altaba Inc. Common Stock
AABA
| $4.28M | 0.01% |
62,759
+13,927
| +29% | +$949K |
|
61
Consumers Staples Select Sector SPDR Fund
XLP
$15.8B
| $4.22M | 0.01% |
78,238
+34,235
| +78% | +$1.85M |
|
62
Las Vegas Sands
LVS
$38B
| $4.2M | 0.01% |
+70,735
| New | +$4.2M |
|
|
GWPH
63
DELISTED
GW Pharmaceuticals Plc American Depositary Shares
GWPH
| $4.2M | 0.01% |
24,291
+14,326
| +144% | +$2.47M |
|
64
lululemon athletica
LULU
$23.8B
| $4.19M | 0.01% |
+25,790
| New | +$4.19M |
|
65
Dollar Tree
DLTR
$21.3B
| $4.17M | 0.01% |
51,176
+32,688
| +177% | +$2.67M |
|
66
Deere & Co
DE
$127B
| $4.11M | 0.01% |
27,344
-59,957
| -69% | -$9.01M |
|
67
Lockheed Martin
LMT
$105B
| $4.08M | 0.01% |
11,783
-10,321
| -47% | -$3.57M |
|
68
MGM Resorts International
MGM
$10.4B
| $3.9M | 0.01% |
139,767
-37,177
| -21% | -$1.04M |
|
69
Lam Research
LRCX
$124B
| $3.9M | 0.01% |
256,910
+181,350
| +240% | +$2.75M |
|
70
Bristol-Myers Squibb
BMY
$96.7B
| $3.87M | 0.01% |
62,365
-40,046
| -39% | -$2.49M |
|
71
Constellation Brands
STZ
$25.8B
| $3.86M | 0.01% |
+17,905
| New | +$3.86M |
|
72
Costco
COST
$421B
| $3.84M | 0.01% |
16,329
+6,868
| +73% | +$1.61M |
|
73
Invesco CurrencyShares Euro Currency Trust
FXE
$527M
| $3.77M | 0.01% |
33,873
+24,866
| +276% | +$2.76M |
|
|
X
74
DELISTED
US Steel
X
| $3.76M | 0.01% |
123,454
+62,988
| +104% | +$1.92M |
|
75
Domino's
DPZ
$15.8B
| $3.72M | 0.01% |
12,615
+5,470
| +77% | +$1.61M |
|