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
|
$114M |
| 2 |
Citigroup
C
|
$77M |
| 3 |
Broadcom
AVGO
|
$53M |
| 4 |
Pinduoduo
PDD
|
$49.7M |
| 5 |
Intel
INTC
|
$44.5M |
Top Sells
| 1 |
Energy Select Sector SPDR Fund
XLE
|
$92.5M |
| 2 |
Pfizer
PFE
|
$67.5M |
| 3 |
Boeing
BA
|
$66.7M |
| 4 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
$44.9M |
| 5 |
PayPal
PYPL
|
$44.4M |
Sector Composition
| 1 | Technology | 27.91% |
| 2 | Consumer Discretionary | 14.92% |
| 3 | Healthcare | 10.74% |
| 4 | Financials | 10.11% |
| 5 | Materials | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
226
Direxion Daily S&P Biotech Bull 3X Shares
LABU
$770M
| $2.57M | ﹤0.01% |
+22,686
| New | +$2.57M |
|
227
Direxion Daily Junior Gold Miners Index Bull 2X Shares
JNUG
$478M
| $2.57M | ﹤0.01% |
68,911
-18,636
| -21% | -$694K |
|
228
Sunrun
RUN
$4.19B
| $2.55M | ﹤0.01% |
215,074
-91,040
| -30% | -$1.08M |
|
229
Caesars Entertainment
CZR
$5.48B
| $2.54M | ﹤0.01% |
63,974
-47,375
| -43% | -$1.88M |
|
230
Union Pacific
UNP
$131B
| $2.54M | ﹤0.01% |
+11,229
| New | +$2.54M |
|
231
Netflix
NFLX
$529B
| $2.49M | ﹤0.01% |
+3,693
| New | +$2.49M |
|
232
Medtronic
MDT
$119B
| $2.47M | ﹤0.01% |
+31,435
| New | +$2.47M |
|
233
DexCom
DXCM
$31.6B
| $2.47M | ﹤0.01% |
21,749
+6,422
| +42% | +$728K |
|
234
NextEra Energy, Inc.
NEE
$146B
| $2.46M | ﹤0.01% |
+34,794
| New | +$2.46M |
|
235
Global X Uranium ETF
URA
$4.17B
| $2.46M | ﹤0.01% |
85,098
+1,867
| +2% | +$54K |
|
236
Direxion Daily S&P 500 Bear 3x Shares
SPXS
$443M
| $2.45M | ﹤0.01% |
312,471
+73,198
| +31% | +$574K |
|
237
Fox Class A
FOXA
$27.4B
| $2.42M | ﹤0.01% |
70,312
+63,657
| +957% | +$2.19M |
|
238
Galicia Financial Group
GGAL
$6.44B
| $2.41M | ﹤0.01% |
+78,785
| New | +$2.41M |
|
239
Reddit
RDDT
$44.9B
| $2.39M | ﹤0.01% |
37,356
-12,677
| -25% | -$810K |
|
240
MPLX
MPLX
$51.5B
| $2.39M | ﹤0.01% |
+56,013
| New | +$2.39M |
|
241
StoneCo
STNE
$4.63B
| $2.38M | ﹤0.01% |
198,243
+15,577
| +9% | +$187K |
|
242
Bank of Montreal
BMO
$90.3B
| $2.37M | ﹤0.01% |
28,285
+22,163
| +362% | +$1.86M |
|
243
St. Joe Company
JOE
$2.96B
| $2.37M | ﹤0.01% |
43,355
-4,789
| -10% | -$262K |
|
244
iShares Russell 2000 Value ETF
IWN
$11.9B
| $2.37M | ﹤0.01% |
15,530
+4,850
| +45% | +$739K |
|
245
GSK
GSK
$81.5B
| $2.35M | ﹤0.01% |
+61,149
| New | +$2.35M |
|
246
Nutrien
NTR
$27.4B
| $2.34M | ﹤0.01% |
45,907
+33,889
| +282% | +$1.73M |
|
247
Teck Resources
TECK
$16.8B
| $2.32M | ﹤0.01% |
48,475
-69,355
| -59% | -$3.32M |
|
248
Ardelyx
ARDX
$1.57B
| $2.32M | ﹤0.01% |
312,997
+170,348
| +119% | +$1.26M |
|
249
Invesco
IVZ
$9.81B
| $2.32M | ﹤0.01% |
155,066
+107,348
| +225% | +$1.61M |
|
250
Baxter International
BAX
$12.5B
| $2.31M | ﹤0.01% |
69,021
-193,288
| -74% | -$6.46M |
|