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 |
Apple
AAPL
|
$258M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
$75.7M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
$67.2M |
| 4 |
Alphabet (Google) Class C
GOOG
|
$59.4M |
| 5 |
Intel
INTC
|
$45.8M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
$56.8M |
| 2 |
iShares Silver Trust
SLV
|
$45.9M |
| 3 |
Ford
F
|
$32.5M |
| 4 |
Exxon Mobil
XOM
|
$20.4M |
| 5 |
Caterpillar
CAT
|
$19.2M |
Sector Composition
| 1 | Technology | 26.01% |
| 2 | Consumer Discretionary | 9.82% |
| 3 | Communication Services | 9.82% |
| 4 | Financials | 8.68% |
| 5 | Healthcare | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
176
WideOpenWest
WOW
$436M
| $2.58M | ﹤0.01% |
141,787
+86,195
| +155% | +$1.57M |
|
177
Cardinal Health
CAH
$35.5B
| $2.55M | ﹤0.01% |
48,783
-34,186
| -41% | -$1.79M |
|
178
SPDR S&P Regional Banking ETF
KRE
$3.97B
| $2.54M | ﹤0.01% |
+43,702
| New | +$2.54M |
|
179
Simon Property Group
SPG
$59.2B
| $2.53M | ﹤0.01% |
26,629
-23,519
| -47% | -$2.23M |
|
180
ARK Innovation ETF
ARKK
$7.48B
| $2.52M | ﹤0.01% |
63,294
+56,656
| +854% | +$2.26M |
|
|
PSTH
181
DELISTED
Pershing Square Tontine Holdings, Ltd.
PSTH
| $2.52M | ﹤0.01% |
126,347
+92,844
| +277% | +$1.85M |
|
182
Deutsche Bank
DB
$67.7B
| $2.51M | ﹤0.01% |
286,954
-21,993
| -7% | -$192K |
|
|
SWCH
183
DELISTED
Switch, Inc. Class A Common Stock
SWCH
| $2.47M | ﹤0.01% |
+73,729
| New | +$2.47M |
|
184
Whirlpool
WHR
$5.28B
| $2.46M | ﹤0.01% |
+15,877
| New | +$2.46M |
|
185
Pan American Silver
PAAS
$12.5B
| $2.43M | ﹤0.01% |
123,683
+71,062
| +135% | +$1.4M |
|
186
Ambarella
AMBA
$3.51B
| $2.42M | ﹤0.01% |
36,910
+20,460
| +124% | +$1.34M |
|
187
Day One Biopharmaceuticals
DAWN
$775M
| $2.38M | ﹤0.01% |
+132,926
| New | +$2.38M |
|
188
EXL Service
EXLS
$7.21B
| $2.36M | ﹤0.01% |
+80,090
| New | +$2.36M |
|
189
iShares MSCI South Korea ETF
EWY
$5.21B
| $2.35M | ﹤0.01% |
40,424
+21,296
| +111% | +$1.24M |
|
|
HIMX
190
Himax Technologies
HIMX
$1.46B
| $2.34M | ﹤0.01% |
+312,250
| New | +$2.34M |
|
191
Flex
FLEX
$20.7B
| $2.32M | ﹤0.01% |
213,007
+168,890
| +383% | +$1.84M |
|
192
Nova
NVMI
$7.54B
| $2.29M | ﹤0.01% |
25,907
+14,928
| +136% | +$1.32M |
|
193
International Paper
IP
$25.6B
| $2.27M | ﹤0.01% |
+54,224
| New | +$2.27M |
|
194
iShares US Oil & Gas Exploration & Production ETF
IEO
$466M
| $2.25M | ﹤0.01% |
28,896
+28,590
| +9,343% | +$2.23M |
|
195
SPDR S&P Metals & Mining ETF
XME
$2.33B
| $2.25M | ﹤0.01% |
51,809
-34,986
| -40% | -$1.52M |
|
196
Skyworks Solutions
SWKS
$11.1B
| $2.24M | ﹤0.01% |
24,214
+8,967
| +59% | +$831K |
|
197
HCA Healthcare
HCA
$97.8B
| $2.24M | ﹤0.01% |
+13,326
| New | +$2.24M |
|
198
Vanguard Information Technology ETF
VGT
$99.7B
| $2.2M | ﹤0.01% |
+6,723
| New | +$2.2M |
|
199
W.P. Carey
WPC
$14.9B
| $2.19M | ﹤0.01% |
27,023
+24,095
| +823% | +$1.96M |
|
200
Xtrackers Harvest CSI 300 China A-Shares ETF
ASHR
$2.31B
| $2.16M | ﹤0.01% |
63,302
-380,159
| -86% | -$13M |
|