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 |
Advanced Micro Devices
AMD
|
$17.7M |
| 2 |
iShares MSCI EAFE ETF
EFA
|
$10.1M |
| 3 |
NIO
NIO
|
$7.66M |
| 4 |
Alibaba
BABA
|
$7.54M |
| 5 |
Micron Technology
MU
|
$6.73M |
Top Sells
| 1 |
NVIDIA
NVDA
|
$101M |
| 2 |
SPDR Gold Trust
GLD
|
$15.2M |
| 3 |
Amazon
AMZN
|
$9.5M |
| 4 |
SPDR S&P 500 ETF Trust
SPY
|
$8.76M |
| 5 |
Technology Select Sector SPDR Fund
XLK
|
$7.41M |
Sector Composition
| 1 | Technology | 18.66% |
| 2 | Consumer Discretionary | 14.99% |
| 3 | Communication Services | 10.06% |
| 4 | Healthcare | 9.68% |
| 5 | Financials | 9.59% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
NEX
176
DELISTED
NexTier Oilfield Solutions Inc.
NEX
| $3.34M | ﹤0.01% |
653,260
| – | – |
|
|
JWN
177
DELISTED
Nordstrom
JWN
| $3.32M | ﹤0.01% |
90,845
-6,728
| -7% | -$246K |
|
178
Edwards Lifesciences
EW
$47.7B
| $3.31M | ﹤0.01% |
31,592
+15,066
| +91% | +$1.58M |
|
179
iShares Russell 1000 Growth ETF
IWF
$117B
| $3.31M | ﹤0.01% |
12,158
+781
| +7% | +$213K |
|
180
KLA
KLAC
$111B
| $3.29M | ﹤0.01% |
10,551
-673
| -6% | -$210K |
|
181
Ralph Lauren
RL
$19B
| $3.29M | ﹤0.01% |
27,849
-100
| -0.4% | -$11.8K |
|
182
KB Home
KBH
$4.34B
| $3.26M | ﹤0.01% |
78,020
-5,420
| -6% | -$227K |
|
183
Bunge Global
BG
$16.3B
| $3.26M | ﹤0.01% |
40,995
+400
| +1% | +$31.8K |
|
184
Boston Scientific
BSX
$159B
| $3.25M | ﹤0.01% |
75,006
+3,093
| +4% | +$134K |
|
185
DoubleVerify
DV
$2.61B
| $3.24M | ﹤0.01% |
78,178
+74,613
| +2,093% | +$3.09M |
|
186
Sherwin-Williams
SHW
$90.5B
| $3.24M | ﹤0.01% |
11,757
+619
| +6% | +$170K |
|
|
DISCA
187
DELISTED
Discovery, Inc. Series A Common Stock
DISCA
| $3.22M | ﹤0.01% |
103,082
+4,695
| +5% | +$146K |
|
188
Opendoor
OPEN
$3.78B
| $3.2M | ﹤0.01% |
187,236
+15,571
| +9% | +$266K |
|
189
BILL Holdings
BILL
$4.69B
| $3.19M | ﹤0.01% |
17,749
+2
| +0% | +$360 |
|
190
Capri Holdings
CPRI
$2.51B
| $3.17M | ﹤0.01% |
55,951
+3,412
| +6% | +$193K |
|
|
IPOF
191
DELISTED
Social Capital Hedosophia Holdings Corp. VI
IPOF
| $3.16M | ﹤0.01% |
309,424
-20,654
| -6% | -$211K |
|
192
Lemonade
LMND
$3.68B
| $3.16M | ﹤0.01% |
28,039
-571
| -2% | -$64.4K |
|
193
O'Reilly Automotive
ORLY
$88.1B
| $3.16M | ﹤0.01% |
5,494
+900
| +20% | +$518K |
|
194
Costco
COST
$421B
| $3.13M | ﹤0.01% |
7,939
+1,816
| +30% | +$716K |
|
195
ProShares Ultra Bloomberg Crude Oil
UCO
$376M
| $3.13M | ﹤0.01% |
38,960
-1,853
| -5% | -$149K |
|
196
Microvision
MVIS
$334M
| $3.1M | ﹤0.01% |
189,368
+6,690
| +4% | +$110K |
|
197
Amplify Junior Silver Miners ETF
SILJ
$2.06B
| $3.08M | ﹤0.01% |
203,698
| – | – |
|
198
CVS Health
CVS
$93B
| $3.07M | ﹤0.01% |
37,397
+518
| +1% | +$42.6K |
|
199
Parker-Hannifin
PH
$94.8B
| $3.05M | ﹤0.01% |
9,920
+100
| +1% | +$30.7K |
|
200
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
$304M
| $3.02M | ﹤0.01% |
160,694
+2,800
| +2% | +$52.7K |
|