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 |
Invesco QQQ Trust
QQQ
|
+$41.7M |
| 2 |
Mastercard
MA
|
+$33.6M |
| 3 |
Alibaba
BABA
|
+$33.4M |
| 4 |
Apple
AAPL
|
+$27.9M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$26M |
Top Sells
| 1 |
JPMorgan Chase
JPM
|
+$60M |
| 2 |
TSMC
TSM
|
+$49.5M |
| 3 |
iShares Silver Trust
SLV
|
+$26M |
| 4 |
Amazon
AMZN
|
+$25.2M |
| 5 |
Boeing
BA
|
+$22.1M |
Sector Composition
| 1 | Consumer Discretionary | 23.12% |
| 2 | Technology | 13.05% |
| 3 | Healthcare | 11.53% |
| 4 | Industrials | 7.38% |
| 5 | Communication Services | 6.71% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
GWPH
301
DELISTED
GW Pharmaceuticals Plc American Depositary Shares
GWPH
| $1.46M | ﹤0.01% |
12,672
+8,545
| +207% | +$986K |
|
302
Direxion Daily Semiconductor Bull 3X Shares
SOXL
$12.2B
| $1.46M | ﹤0.01% |
46,875
+33,375
| +247% | +$1.04M |
|
|
CMRC
303
Commerce.com, Inc. Series 1 Common Stock
CMRC
$374M
| $1.45M | ﹤0.01% |
22,678
+22,433
| +9,156% | +$1.44M |
|
|
MNR
304
DELISTED
Monmouth Real Estate Investment Corp
MNR
| $1.45M | ﹤0.01% |
+83,922
| New | +$1.45M |
|
305
CarParts.com
PRTS
$52.1M
| $1.44M | ﹤0.01% |
116,611
+75,154
| +181% | +$931K |
|
306
W.P. Carey
WPC
$14.8B
| $1.44M | ﹤0.01% |
+20,803
| New | +$1.44M |
|
|
FLIR
307
DELISTED
FLIR Systems, Inc. (DE) Common Stock
FLIR
| $1.44M | ﹤0.01% |
32,747
+19,112
| +140% | +$838K |
|
|
SUM
308
DELISTED
Summit Materials, Inc. Class A Common Stock
SUM
| $1.43M | ﹤0.01% |
72,512
+57,908
| +397% | +$1.14M |
|
309
Hershey
HSY
$38B
| $1.43M | ﹤0.01% |
9,368
+4,041
| +76% | +$616K |
|
310
Humana
HUM
$32.8B
| $1.43M | ﹤0.01% |
+3,479
| New | +$1.43M |
|
311
Celsius Holdings
CELH
$14.4B
| $1.42M | ﹤0.01% |
84,786
+33,120
| +64% | +$555K |
|
312
Ameresco
AMRC
$1.31B
| $1.41M | ﹤0.01% |
27,046
+26,131
| +2,856% | +$1.36M |
|
313
Hyliion Holdings
HYLN
$282M
| $1.39M | ﹤0.01% |
84,448
+67,552
| +400% | +$1.11M |
|
|
REGI
314
DELISTED
Renewable Energy Group, Inc.
REGI
| $1.37M | ﹤0.01% |
+19,395
| New | +$1.37M |
|
315
iShares Russell Mid-Cap Value ETF
IWS
$14.1B
| $1.36M | ﹤0.01% |
14,068
+14,050
| +78,056% | +$1.36M |
|
316
Masco
MAS
$15.4B
| $1.36M | ﹤0.01% |
24,846
+10,303
| +71% | +$566K |
|
317
United Rentals
URI
$60.8B
| $1.36M | ﹤0.01% |
+5,882
| New | +$1.36M |
|
318
Boston Scientific
BSX
$160B
| $1.35M | ﹤0.01% |
+37,687
| New | +$1.35M |
|
319
ServiceNow
NOW
$194B
| $1.34M | ﹤0.01% |
2,443
-21,522
| -90% | -$11.8M |
|
320
Gen Digital
GEN
$18.1B
| $1.34M | ﹤0.01% |
64,519
-19,022
| -23% | -$395K |
|
321
Dynatrace
DT
$15.3B
| $1.34M | ﹤0.01% |
30,962
+7,980
| +35% | +$345K |
|
322
Williams Companies
WMB
$70.3B
| $1.33M | ﹤0.01% |
66,307
+59,631
| +893% | +$1.2M |
|
|
CEO
323
DELISTED
CNOOC Limited
CEO
| $1.33M | ﹤0.01% |
14,464
+9,172
| +173% | +$840K |
|
324
Angi Inc
ANGI
$803M
| $1.32M | ﹤0.01% |
+10,033
| New | +$1.32M |
|
325
ProShares Short QQQ
PSQ
$542M
| $1.32M | ﹤0.01% |
18,338
+9,357
| +104% | +$674K |
|