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 | |
|---|---|---|---|---|---|---|
476
Dave & Buster's
PLAY
$757M
| $891K | ﹤0.01% |
22,387
-26,995
| -55% | -$1.07M |
|
477
iShares 1-3 Year Treasury Bond ETF
SHY
$24.5B
| $887K | ﹤0.01% |
10,864
+8,235
| +313% | +$672K |
|
478
Repligen
RGEN
$6.84B
| $885K | ﹤0.01% |
+7,021
| New | +$885K |
|
479
Cellebrite
CLBT
$4.2B
| $880K | ﹤0.01% |
73,687
+57,810
| +364% | +$690K |
|
|
JNPR
480
DELISTED
Juniper Networks
JNPR
| $879K | ﹤0.01% |
24,123
-13,488
| -36% | -$491K |
|
481
TPG
TPG
$8.77B
| $878K | ﹤0.01% |
+21,196
| New | +$878K |
|
482
iShares MSCI Turkey ETF
TUR
$163M
| $876K | ﹤0.01% |
+20,870
| New | +$876K |
|
|
HCP
483
DELISTED
HashiCorp, Inc. Class A Common Stock
HCP
| $871K | ﹤0.01% |
+25,880
| New | +$871K |
|
484
Alexandria Real Estate Equities
ARE
$14.4B
| $870K | ﹤0.01% |
7,443
-898
| -11% | -$105K |
|
485
Bio-Rad Laboratories Class A
BIO
$7.66B
| $870K | ﹤0.01% |
+3,189
| New | +$870K |
|
486
ProShares Ultra QQQ
QLD
$9.21B
| $870K | ﹤0.01% |
+8,724
| New | +$870K |
|
487
Informatica
INFA
$7.55B
| $863K | ﹤0.01% |
27,970
+15,514
| +125% | +$479K |
|
488
Martin Marietta Materials
MLM
$37.2B
| $863K | ﹤0.01% |
1,594
-4,179
| -72% | -$2.26M |
|
489
YieldMax COIN Option Income Strategy ETF
CONY
$1.41B
| $858K | ﹤0.01% |
42,129
+32,621
| +343% | +$664K |
|
490
Taboola.com
TBLA
$1.01B
| $856K | ﹤0.01% |
249,044
+77,074
| +45% | +$265K |
|
491
Coeur Mining
CDE
$9.33B
| $853K | ﹤0.01% |
151,787
-96,147
| -39% | -$540K |
|
492
ARK Innovation ETF
ARKK
$7.23B
| $852K | ﹤0.01% |
19,389
+3,344
| +21% | +$147K |
|
493
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
$248M
| $849K | ﹤0.01% |
+19,448
| New | +$849K |
|
494
Ecolab
ECL
$76.2B
| $844K | ﹤0.01% |
3,549
+2,770
| +356% | +$659K |
|
495
Skechers
SKX
$9.5B
| $836K | ﹤0.01% |
12,096
+1,717
| +17% | +$119K |
|
496
Live Nation Entertainment
LYV
$39.8B
| $827K | ﹤0.01% |
+8,826
| New | +$827K |
|
497
Pultegroup
PHM
$26.6B
| $827K | ﹤0.01% |
7,518
+4,759
| +172% | +$524K |
|
498
Omega Healthcare
OHI
$12.7B
| $824K | ﹤0.01% |
+24,085
| New | +$824K |
|
499
Aspen Aerogels
ASPN
$539M
| $810K | ﹤0.01% |
33,974
+29,687
| +692% | +$708K |
|
|
BITF
500
Bitfarms
BITF
$967M
| $810K | ﹤0.01% |
315,409
+57,632
| +22% | +$148K |
|