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 | +$234M | |
| 2 | +$97.5M | |
| 3 | +$96.8M | |
| 4 |
iShares Bitcoin Trust
IBIT
|
+$80.6M |
| 5 |
Pinduoduo
PDD
|
+$54.9M |
Top Sells
| 1 | +$129M | |
| 2 | +$92.9M | |
| 3 | +$82.9M | |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$68.4M |
| 5 |
Meta Platforms (Facebook)
META
|
+$59.2M |
Sector Composition
| 1 | Technology | 34.08% |
| 2 | Consumer Discretionary | 12.8% |
| 3 | Healthcare | 10.63% |
| 4 | Financials | 7.25% |
| 5 | Industrials | 3.96% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
151
Merck
MRK
$279B
| $4.27M | 0.09% |
50,909
+28,917
|
|
||
152
General Mills
GIS
$18.8B
| $4.27M | 0.09% |
+84,657
|
|
||
153
Transocean
RIG
$6.71B
| $4.26M | 0.09% |
1,364,326
+1,201,896
|
|
||
154
Aon
AON
$71.8B
| $4.24M | 0.09% |
+11,892
|
|
||
155
Bath & Body Works
BBWI
$4.12B
| $4.22M | 0.09% |
163,709
+104,954
|
|
||
156
Core Scientific
CORZ
$6.55B
| $4.2M | 0.09% |
233,870
-112,931
|
|
||
157
Wells Fargo
WFC
$247B
| $4.19M | 0.09% |
50,022
-215,893
|
|
||
158
Rio Tinto
RIO
$163B
| $4.12M | 0.09% |
62,400
-145,461
|
|
||
|
KEEL
159
Keel Infrastructure Corp
KEEL
$1.83B
| $4.07M | 0.09% |
1,441,997
+900,529
|
|
||
160
ARK Genomic Revolution ETF
ARKG
$1.24B
| $4.02M | 0.09% |
144,684
+106,236
|
|
||
161
Pitney Bowes
PBI
$2.1B
| $4.01M | 0.09% |
351,330
-1,797
|
|
||
162
Chevron
CVX
$371B
| $3.99M | 0.09% |
+25,676
|
|
||
163
uniQure
QURE
$1.11B
| $3.97M | 0.09% |
67,995
+3,736
|
|
||
164
Harley-Davidson
HOG
$2.71B
| $3.92M | 0.09% |
140,438
+49,758
|
|
||
165
Stellantis
STLA
$24.6B
| $3.88M | 0.09% |
415,266
+320,677
|
|
||
166
Arm
ARM
$209B
| $3.83M | 0.08% |
+27,036
|
|
||
167
Hilton Worldwide
HLT
$77.8B
| $3.82M | 0.08% |
14,729
-2,821
|
|
||
168
Advance Auto Parts
AAP
$3.54B
| $3.8M | 0.08% |
61,942
-62,820
|
|
||
169
Direxion Daily CSI China Internet Index Bull 2X ETF
CWEB
$258M
| $3.77M | 0.08% |
+65,534
|
|
||
170
UiPath
PATH
$5.71B
| $3.77M | 0.08% |
281,401
+205,728
|
|
||
171
Rubrik
RBRK
$11.4B
| $3.74M | 0.08% |
45,428
+22,193
|
|
||
172
CVS Health
CVS
$98B
| $3.68M | 0.08% |
+48,791
|
|
||
173
Cooper-Standard Automotive
CPS
$557M
| $3.66M | 0.08% |
99,133
+35,428
|
|
||
174
Under Armour
UAA
$2.69B
| $3.65M | 0.08% |
730,487
+283,413
|
|
||
175
CleanSpark
CLSK
$3.12B
| $3.64M | 0.08% |
251,232
-160,724
|
|