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 | |
|---|---|---|---|---|---|---|
126
Goodyear
GT
$2.39B
| $3M | ﹤0.01% |
295,151
+68,831
| +30% | +$698K |
|
127
Vale
VALE
$43.8B
| $2.99M | ﹤0.01% |
176,250
-230,151
| -57% | -$3.9M |
|
128
Ovintiv
OVV
$10.6B
| $2.97M | ﹤0.01% |
+58,521
| New | +$2.97M |
|
129
Check Point Software Technologies
CHKP
$20.3B
| $2.95M | ﹤0.01% |
23,376
+5,058
| +28% | +$638K |
|
130
The Communication Services Select Sector SPDR Fund
XLC
$25.5B
| $2.95M | ﹤0.01% |
61,436
+61,434
| +3,071,700% | +$2.95M |
|
131
Direxion Daily 20+ Year Treasury Bull 3X Shares
TMF
$5.01B
| $2.94M | ﹤0.01% |
38,575
+35,219
| +1,049% | +$2.68M |
|
132
Five Below
FIVE
$8.43B
| $2.92M | ﹤0.01% |
16,528
+13,142
| +388% | +$2.32M |
|
133
EQT Corp
EQT
$32B
| $2.89M | ﹤0.01% |
85,488
-40,536
| -32% | -$1.37M |
|
134
CoreCivic
CXW
$2.14B
| $2.89M | ﹤0.01% |
249,629
+31,535
| +14% | +$364K |
|
135
Elanco Animal Health
ELAN
$8.66B
| $2.86M | ﹤0.01% |
234,310
+46,620
| +25% | +$570K |
|
136
Icahn Enterprises
IEP
$4.81B
| $2.84M | ﹤0.01% |
+56,138
| New | +$2.84M |
|
137
Alliant Energy
LNT
$16.6B
| $2.83M | ﹤0.01% |
+51,259
| New | +$2.83M |
|
138
Pan American Silver
PAAS
$12.1B
| $2.83M | ﹤0.01% |
172,923
-31,075
| -15% | -$508K |
|
139
Owens Corning
OC
$12.5B
| $2.82M | ﹤0.01% |
33,070
+27,081
| +452% | +$2.31M |
|
140
Viatris
VTRS
$12.2B
| $2.82M | ﹤0.01% |
253,142
+170,792
| +207% | +$1.9M |
|
141
Marvell Technology
MRVL
$53.4B
| $2.79M | ﹤0.01% |
75,453
-65,322
| -46% | -$2.42M |
|
142
Vanguard Dividend Appreciation ETF
VIG
$95.3B
| $2.79M | ﹤0.01% |
+18,396
| New | +$2.79M |
|
143
Pfizer
PFE
$140B
| $2.77M | ﹤0.01% |
53,990
-801,594
| -94% | -$41.1M |
|
144
BILL Holdings
BILL
$4.68B
| $2.72M | ﹤0.01% |
25,001
+20,230
| +424% | +$2.2M |
|
145
British American Tobacco
BTI
$122B
| $2.69M | ﹤0.01% |
67,223
-212,410
| -76% | -$8.49M |
|
146
McKesson
MCK
$86.3B
| $2.67M | ﹤0.01% |
+7,116
| New | +$2.67M |
|
147
Blackstone
BX
$132B
| $2.63M | ﹤0.01% |
35,424
-173,775
| -83% | -$12.9M |
|
148
American Water Works
AWK
$27.7B
| $2.59M | ﹤0.01% |
17,020
+9,087
| +115% | +$1.38M |
|
149
Spotify
SPOT
$144B
| $2.59M | ﹤0.01% |
+32,810
| New | +$2.59M |
|
150
State Street
STT
$32.3B
| $2.59M | ﹤0.01% |
33,384
+16,426
| +97% | +$1.27M |
|