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 | |
|---|---|---|---|---|---|---|
651
Evergy
EVRG
$16.5B
| $472K | ﹤0.01% |
8,929
+4,597
| +106% | +$243K |
|
652
HSBC
HSBC
$237B
| $468K | ﹤0.01% |
10,762
-22,392
| -68% | -$974K |
|
653
Community Health Systems
CYH
$409M
| $466K | ﹤0.01% |
138,716
-41,909
| -23% | -$141K |
|
654
Sunoco
SUN
$6.9B
| $466K | ﹤0.01% |
8,258
+6,233
| +308% | +$352K |
|
655
Allison Transmission
ALSN
$7.41B
| $465K | ﹤0.01% |
6,139
+1,338
| +28% | +$101K |
|
656
ChargePoint
CHPT
$235M
| $465K | ﹤0.01% |
15,418
+4,133
| +37% | +$125K |
|
657
Clean Energy Fuels
CLNE
$561M
| $465K | ﹤0.01% |
174,197
+96,191
| +123% | +$257K |
|
658
Genius Sports
GENI
$2.99B
| $460K | ﹤0.01% |
84,406
+20,794
| +33% | +$113K |
|
659
Green Plains
GPRE
$635M
| $459K | ﹤0.01% |
+28,950
| New | +$459K |
|
660
Regency Centers
REG
$13.1B
| $459K | ﹤0.01% |
+7,394
| New | +$459K |
|
661
Teleflex
TFX
$5.76B
| $456K | ﹤0.01% |
+2,169
| New | +$456K |
|
662
Rayonier Advanced Materials
RYAM
$402M
| $454K | ﹤0.01% |
83,458
+45,287
| +119% | +$246K |
|
663
Sundial Growers
SNDL
$607M
| $452K | ﹤0.01% |
238,273
-51,282
| -18% | -$97.3K |
|
664
Bitdeer Technologies
BTDR
$2.92B
| $448K | ﹤0.01% |
43,738
+22,157
| +103% | +$227K |
|
665
Frontline
FRO
$5.02B
| $447K | ﹤0.01% |
17,379
+15,777
| +985% | +$406K |
|
666
AppFolio
APPF
$9.92B
| $444K | ﹤0.01% |
1,817
+924
| +103% | +$226K |
|
667
BlackBerry
BB
$2.25B
| $444K | ﹤0.01% |
179,224
+114,218
| +176% | +$283K |
|
668
Bausch + Lomb
BLCO
$5.31B
| $444K | ﹤0.01% |
30,593
+6,473
| +27% | +$93.9K |
|
669
Alphabet (Google) Class A
GOOGL
$2.89T
| $440K | ﹤0.01% |
2,417
-111,838
| -98% | -$20.4M |
|
670
Tidewater
TDW
$2.97B
| $437K | ﹤0.01% |
+4,596
| New | +$437K |
|
671
Agilent Technologies
A
$35.2B
| $435K | ﹤0.01% |
3,361
-17,722
| -84% | -$2.29M |
|
672
Loews
L
$19.9B
| $435K | ﹤0.01% |
5,821
+869
| +18% | +$64.9K |
|
673
Altice USA
ATUS
$1.09B
| $433K | ﹤0.01% |
212,311
+195,620
| +1,172% | +$399K |
|
674
Restaurant Brands International
QSR
$20.3B
| $432K | ﹤0.01% |
+6,148
| New | +$432K |
|
675
Gogo Inc
GOGO
$1.36B
| $429K | ﹤0.01% |
44,600
-7,069
| -14% | -$68K |
|