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
|
$144M |
| 2 |
Invesco QQQ Trust
QQQ
|
$68.7M |
| 3 |
AT&T
T
|
$45.5M |
| 4 |
Meta Platforms (Facebook)
META
|
$38M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
$35.4M |
Top Sells
| 1 |
Microsoft
MSFT
|
$94.2M |
| 2 |
Citigroup
C
|
$62.3M |
| 3 |
JPMorgan Chase
JPM
|
$56.2M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
$45.8M |
| 5 |
SPDR Gold Trust
GLD
|
$44.4M |
Sector Composition
| 1 | Consumer Discretionary | 16.85% |
| 2 | Technology | 15.5% |
| 3 | Communication Services | 10.53% |
| 4 | Healthcare | 8.8% |
| 5 | Consumer Staples | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
76
KE Holdings
BEKE
$21.8B
| $4.81M | 0.01% |
344,759
+228,693
| +197% | +$3.19M |
|
|
PXD
77
DELISTED
Pioneer Natural Resource Co.
PXD
| $4.8M | 0.01% |
21,007
+16,071
| +326% | +$3.67M |
|
78
Invesco S&P 500 Equal Weight ETF
RSP
$73.5B
| $4.79M | 0.01% |
+33,923
| New | +$4.79M |
|
79
Energy Transfer Partners
ET
$60.3B
| $4.72M | 0.01% |
+397,286
| New | +$4.72M |
|
80
CF Industries
CF
$13.7B
| $4.63M | 0.01% |
54,320
-20,241
| -27% | -$1.72M |
|
81
Invesco CurrencyShares Japanese Yen Trust
FXY
$559M
| $4.61M | 0.01% |
64,873
-22,197
| -25% | -$1.58M |
|
82
Direxion Daily Gold Miners Index Bull 2X Shares
NUGT
$820M
| $4.59M | 0.01% |
133,072
+132,337
| +18,005% | +$4.56M |
|
83
iShares US Real Estate ETF
IYR
$3.7B
| $4.57M | 0.01% |
+54,226
| New | +$4.57M |
|
84
Valmont Industries
VMI
$7.25B
| $4.54M | ﹤0.01% |
13,734
+7,555
| +122% | +$2.5M |
|
|
HZNP
85
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
| $4.41M | ﹤0.01% |
+38,793
| New | +$4.41M |
|
|
DO
86
DELISTED
Diamond Offshore Drilling, Inc.
DO
| $4.25M | ﹤0.01% |
408,896
+366,357
| +861% | +$3.81M |
|
87
Palantir
PLTR
$367B
| $4.15M | ﹤0.01% |
646,317
-852,912
| -57% | -$5.48M |
|
88
Invesco CurrencyShares Euro Currency Trust
FXE
$527M
| $4.12M | ﹤0.01% |
41,685
-42,325
| -50% | -$4.18M |
|
89
Steel Dynamics
STLD
$19.1B
| $4.03M | ﹤0.01% |
41,297
+7,846
| +23% | +$766K |
|
90
Peabody Energy
BTU
$2.08B
| $4M | ﹤0.01% |
151,431
+106,696
| +239% | +$2.82M |
|
91
Skyworks Solutions
SWKS
$10.9B
| $3.87M | ﹤0.01% |
42,495
+31,274
| +279% | +$2.85M |
|
92
Generac Holdings
GNRC
$10.3B
| $3.87M | ﹤0.01% |
+38,433
| New | +$3.87M |
|
93
Intuit
INTU
$187B
| $3.83M | ﹤0.01% |
9,835
-13,460
| -58% | -$5.24M |
|
94
Veeva Systems
VEEV
$44.4B
| $3.8M | ﹤0.01% |
+23,576
| New | +$3.8M |
|
95
Madison Square Garden
MSGS
$4.71B
| $3.78M | ﹤0.01% |
+20,608
| New | +$3.78M |
|
96
Hasbro
HAS
$11.1B
| $3.77M | ﹤0.01% |
+61,731
| New | +$3.77M |
|
97
Viking Therapeutics
VKTX
$3.02B
| $3.74M | ﹤0.01% |
398,093
+372,508
| +1,456% | +$3.5M |
|
98
AGNC Investment
AGNC
$10.4B
| $3.74M | ﹤0.01% |
361,538
+90,455
| +33% | +$936K |
|
99
Altimmune
ALT
$325M
| $3.73M | ﹤0.01% |
226,629
+88,886
| +65% | +$1.46M |
|
100
Boston Properties
BXP
$11.7B
| $3.72M | ﹤0.01% |
55,055
-24,550
| -31% | -$1.66M |
|