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
|
+$35.2M |
| 2 |
Micron Technology
MU
|
+$32.9M |
| 3 |
Berkshire Hathaway Class B
BRK.B
|
+$29.5M |
| 4 |
NVIDIA
NVDA
|
+$22.9M |
| 5 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$22M |
Top Sells
| 1 |
TWX
Time Warner Inc
TWX
|
+$34.8M |
| 2 |
Amazon
AMZN
|
+$33.4M |
| 3 |
Tesla
TSLA
|
+$19.8M |
| 4 |
Netflix
NFLX
|
+$17.7M |
| 5 |
TWTR
Twitter, Inc.
TWTR
|
+$13.5M |
Sector Composition
| 1 | Technology | 20.43% |
| 2 | Consumer Discretionary | 15.24% |
| 3 | Communication Services | 12% |
| 4 | Financials | 10.18% |
| 5 | Industrials | 9.87% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1276
iShares MSCI United Kingdom ETF
EWU
$2.94B
| $44K | ﹤0.01% |
+1,288
| New | +$44K |
|
1277
MGP Ingredients
MGPI
$596M
| $44K | ﹤0.01% |
500
-1,078
| -68% | -$94.9K |
|
1278
iShares 1-3 Year Treasury Bond ETF
SHY
$24.5B
| $44K | ﹤0.01% |
+528
| New | +$44K |
|
1279
Strategic Education
STRA
$1.97B
| $44K | ﹤0.01% |
390
-1,370
| -78% | -$155K |
|
|
CORR
1280
DELISTED
CorEnergy Infrastructure Trust, Inc.
CORR
| $44K | ﹤0.01% |
1,196
-2,294
| -66% | -$84.4K |
|
|
PBCT
1281
DELISTED
People's United Financial Inc
PBCT
| $44K | ﹤0.01% |
2,469
-1,162
| -32% | -$20.7K |
|
1282
CEVA Inc
CEVA
$555M
| $43K | ﹤0.01% |
1,446
-1,572
| -52% | -$46.7K |
|
1283
Compugen
CGEN
$127M
| $43K | ﹤0.01% |
13,134
-20,081
| -60% | -$65.7K |
|
1284
Coty
COTY
$3.56B
| $43K | ﹤0.01% |
+3,110
| New | +$43K |
|
1285
FirstCash
FCFS
$6.49B
| $43K | ﹤0.01% |
481
-2,155
| -82% | -$193K |
|
1286
HCI Group
HCI
$2.35B
| $43K | ﹤0.01% |
+1,047
| New | +$43K |
|
1287
HEICO
HEI
$44.7B
| $43K | ﹤0.01% |
597
+348
| +140% | +$25.1K |
|
1288
Malibu Boats
MBUU
$639M
| $43K | ﹤0.01% |
+1,034
| New | +$43K |
|
1289
PTC
PTC
$24.7B
| $43K | ﹤0.01% |
+462
| New | +$43K |
|
1290
Smith Micro Software
SMSI
$15.2M
| $43K | ﹤0.01% |
2,395
+2,386
| +26,511% | +$42.8K |
|
|
TPC
1291
Tutor Perini Corporation
TPC
$3.32B
| $43K | ﹤0.01% |
+2,338
| New | +$43K |
|
|
WAGE
1292
DELISTED
WageWorks, Inc.
WAGE
| $43K | ﹤0.01% |
+865
| New | +$43K |
|
|
EMES
1293
DELISTED
Emerge Energy Services LP
EMES
| $43K | ﹤0.01% |
6,060
-18,158
| -75% | -$129K |
|
|
CYS
1294
DELISTED
CYS Investments Inc.
CYS
| $43K | ﹤0.01% |
5,794
+701
| +14% | +$5.2K |
|
1295
Bank of Hawaii
BOH
$2.71B
| $42K | ﹤0.01% |
509
-1,502
| -75% | -$124K |
|
1296
Helios Technologies
HLIO
$1.85B
| $42K | ﹤0.01% |
+883
| New | +$42K |
|
1297
Koppers
KOP
$555M
| $42K | ﹤0.01% |
+1,112
| New | +$42K |
|
1298
Northern Oil and Gas
NOG
$2.5B
| $42K | ﹤0.01% |
+1,335
| New | +$42K |
|
|
NEX
1299
DELISTED
NexTier Oilfield Solutions Inc.
NEX
| $42K | ﹤0.01% |
3,073
-5,243
| -63% | -$71.7K |
|
|
HIFR
1300
DELISTED
InfraREIT, Inc.
HIFR
| $42K | ﹤0.01% |
+1,937
| New | +$42K |
|