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 |
NVIDIA
NVDA
|
+$60M |
| 2 |
Microsoft
MSFT
|
+$58.6M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$52.5M |
| 4 |
PayPal
PYPL
|
+$40.9M |
| 5 |
Netflix
NFLX
|
+$29.7M |
Top Sells
| 1 |
Apple
AAPL
|
+$48.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
Adobe
ADBE
|
+$40.6M |
| 4 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 5 |
Enphase Energy
ENPH
|
+$27.2M |
Sector Composition
| 1 | Technology | 21.17% |
| 2 | Healthcare | 10.87% |
| 3 | Consumer Discretionary | 10.73% |
| 4 | Communication Services | 10.55% |
| 5 | Financials | 7.54% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
326
GoDaddy
GDDY
$20.4B
| $1.23M | ﹤0.01% |
+16,422
| New | +$1.23M |
|
327
Ericsson
ERIC
$26.7B
| $1.23M | ﹤0.01% |
225,952
+36,108
| +19% | +$197K |
|
328
Global X Uranium ETF
URA
$4.28B
| $1.22M | ﹤0.01% |
56,341
-22,789
| -29% | -$494K |
|
329
Zimmer Biomet
ZBH
$20.6B
| $1.22M | ﹤0.01% |
8,351
-1,860
| -18% | -$271K |
|
|
DQ
330
Daqo New Energy
DQ
$1.82B
| $1.21M | ﹤0.01% |
30,598
-14,274
| -32% | -$566K |
|
331
MPLX
MPLX
$51.2B
| $1.21M | ﹤0.01% |
+35,552
| New | +$1.21M |
|
332
Ambac
AMBC
$423M
| $1.2M | ﹤0.01% |
83,985
-37,620
| -31% | -$535K |
|
333
Synchrony
SYF
$28B
| $1.19M | ﹤0.01% |
+34,969
| New | +$1.19M |
|
334
CenterPoint Energy
CNP
$24.4B
| $1.19M | ﹤0.01% |
40,670
-21,383
| -34% | -$623K |
|
|
X
335
DELISTED
US Steel
X
| $1.18M | ﹤0.01% |
+47,077
| New | +$1.18M |
|
|
SIX
336
DELISTED
Six Flags Entertainment Corp.
SIX
| $1.18M | ﹤0.01% |
+45,314
| New | +$1.18M |
|
337
UFP Technologies
UFPT
$1.55B
| $1.18M | ﹤0.01% |
+6,067
| New | +$1.18M |
|
|
SGEN
338
DELISTED
Seagen Inc. Common Stock
SGEN
| $1.17M | ﹤0.01% |
6,101
+5,493
| +903% | +$1.06M |
|
339
Skechers
SKX
$9.5B
| $1.17M | ﹤0.01% |
22,263
+20,773
| +1,394% | +$1.09M |
|
340
Vale
VALE
$44.4B
| $1.16M | ﹤0.01% |
+86,646
| New | +$1.16M |
|
341
NetEase
NTES
$91.4B
| $1.16M | ﹤0.01% |
+11,979
| New | +$1.16M |
|
342
Autoliv
ALV
$9.67B
| $1.15M | ﹤0.01% |
+13,541
| New | +$1.15M |
|
343
Viatris
VTRS
$12.2B
| $1.15M | ﹤0.01% |
115,288
+105,812
| +1,117% | +$1.06M |
|
344
Health Care Select Sector SPDR Fund
XLV
$34.3B
| $1.15M | ﹤0.01% |
8,644
-7,729
| -47% | -$1.03M |
|
345
Nano X Imaging
NNOX
$254M
| $1.15M | ﹤0.01% |
73,974
+67,674
| +1,074% | +$1.05M |
|
|
MORF
346
DELISTED
Morphic Holding, Inc. Common Stock
MORF
| $1.14M | ﹤0.01% |
19,919
+893
| +5% | +$51.2K |
|
347
Banco Macro
BMA
$2.91B
| $1.14M | ﹤0.01% |
+43,118
| New | +$1.14M |
|
348
Vera Therapeutics
VERA
$1.59B
| $1.13M | ﹤0.01% |
70,522
+61,030
| +643% | +$979K |
|
349
RXO
RXO
$2.77B
| $1.12M | ﹤0.01% |
+49,489
| New | +$1.12M |
|
|
WRK
350
DELISTED
WestRock Company
WRK
| $1.12M | ﹤0.01% |
+38,413
| New | +$1.12M |
|