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 | |
|---|---|---|---|---|---|---|
351
Mativ Holdings
MATV
$680M
| $1.48M | ﹤0.01% |
87,266
+43,172
| +98% | +$732K |
|
352
Autodesk
ADSK
$69.5B
| $1.47M | ﹤0.01% |
+5,951
| New | +$1.47M |
|
353
Telephone and Data Systems
TDS
$4.54B
| $1.47M | ﹤0.01% |
70,929
+11,349
| +19% | +$235K |
|
354
Structure Therapeutics
GPCR
$1.27B
| $1.47M | ﹤0.01% |
37,337
+14,372
| +63% | +$564K |
|
355
Boyd Gaming
BYD
$6.93B
| $1.46M | ﹤0.01% |
+26,413
| New | +$1.46M |
|
356
SM Energy
SM
$3.09B
| $1.44M | ﹤0.01% |
33,411
-15,059
| -31% | -$651K |
|
357
WisdomTree Japan Hedged Equity Fund
DXJ
$3.78B
| $1.44M | ﹤0.01% |
12,796
+788
| +7% | +$88.9K |
|
358
RingCentral
RNG
$2.89B
| $1.44M | ﹤0.01% |
50,963
+23,128
| +83% | +$652K |
|
359
VanEck Agribusiness ETF
MOO
$625M
| $1.43M | ﹤0.01% |
20,343
+17,694
| +668% | +$1.24M |
|
360
TeraWulf
WULF
$3.58B
| $1.42M | ﹤0.01% |
319,034
+205,916
| +182% | +$916K |
|
361
The Mosaic Company
MOS
$10.3B
| $1.42M | ﹤0.01% |
+49,036
| New | +$1.42M |
|
362
Opendoor
OPEN
$4.89B
| $1.41M | ﹤0.01% |
766,827
+401,288
| +110% | +$738K |
|
363
AES
AES
$9.21B
| $1.4M | ﹤0.01% |
79,646
+24,355
| +44% | +$428K |
|
364
Oscar Health
OSCR
$5.02B
| $1.39M | ﹤0.01% |
88,120
+40,207
| +84% | +$636K |
|
365
Altria Group
MO
$112B
| $1.39M | ﹤0.01% |
30,583
+24,626
| +413% | +$1.12M |
|
366
Itaú Unibanco
ITUB
$76.6B
| $1.39M | ﹤0.01% |
+261,272
| New | +$1.39M |
|
367
Tapestry
TPR
$21.7B
| $1.37M | ﹤0.01% |
+32,130
| New | +$1.37M |
|
368
Kellanova
K
$27.8B
| $1.37M | ﹤0.01% |
+23,723
| New | +$1.37M |
|
369
W.P. Carey
WPC
$14.9B
| $1.37M | ﹤0.01% |
+24,865
| New | +$1.37M |
|
370
Liberty Global Class A
LBTYA
$4.05B
| $1.36M | ﹤0.01% |
78,155
-6,699
| -8% | -$117K |
|
371
Papa John's
PZZA
$1.58B
| $1.36M | ﹤0.01% |
28,998
+26,584
| +1,101% | +$1.25M |
|
372
BHP
BHP
$138B
| $1.36M | ﹤0.01% |
23,766
+18,065
| +317% | +$1.03M |
|
373
US Global Jets ETF
JETS
$839M
| $1.35M | ﹤0.01% |
68,665
-115,177
| -63% | -$2.26M |
|
374
Spotify
SPOT
$146B
| $1.34M | ﹤0.01% |
4,279
-1,218
| -22% | -$382K |
|
|
SA
375
Seabridge Gold
SA
$1.81B
| $1.33M | ﹤0.01% |
97,191
+24,039
| +33% | +$329K |
|