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 |
Apple
AAPL
|
+$32.1M |
| 2 |
Bausch Health
BHC
|
+$18.4M |
| 3 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 4 |
Chipotle Mexican Grill
CMG
|
+$14.9M |
| 5 |
Amazon
AMZN
|
+$13M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
+$27.5M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$13.7M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$12.1M |
| 4 |
Netflix
NFLX
|
+$10.7M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$10.7M |
Sector Composition
| 1 | Consumer Discretionary | 17.29% |
| 2 | Healthcare | 13.74% |
| 3 | Technology | 12.76% |
| 4 | Communication Services | 12.12% |
| 5 | Industrials | 10.49% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
351
Rio Tinto
RIO
$101B
| $307K | 0.02% |
10,566
+7,339
| +227% | +$213K |
|
352
Sonida Senior Living
SNDA
$503M
| $307K | 0.02% |
982
-783
| -44% | -$245K |
|
353
Walmart
WMT
$826B
| $307K | 0.02% |
15,051
-53,220
| -78% | -$1.09M |
|
354
Delek US
DK
$1.93B
| $306K | 0.02% |
+12,443
| New | +$306K |
|
355
Acadia Pharmaceuticals
ACAD
$4.18B
| $304K | 0.02% |
8,543
+6,517
| +322% | +$232K |
|
356
OFG Bancorp
OFG
$2B
| $301K | 0.02% |
+41,245
| New | +$301K |
|
357
Pan American Silver
PAAS
$14.9B
| $301K | 0.02% |
46,380
+44,026
| +1,870% | +$286K |
|
|
SRCL
358
DELISTED
Stericycle Inc
SRCL
| $301K | 0.02% |
2,498
+2,290
| +1,101% | +$276K |
|
|
ACHN
359
DELISTED
Achillion Pharmaceuticals, Inc.
ACHN
| $300K | 0.02% |
+27,853
| New | +$300K |
|
360
Oneok
OKE
$46.3B
| $299K | 0.02% |
12,144
+7,023
| +137% | +$173K |
|
361
Philips
PHG
$26.9B
| $299K | 0.02% |
15,870
-23,141
| -59% | -$436K |
|
362
LGI Homes
LGIH
$1.33B
| $298K | 0.02% |
+12,289
| New | +$298K |
|
363
Stanley Black & Decker
SWK
$12.3B
| $297K | 0.02% |
2,789
-420
| -13% | -$44.7K |
|
364
Direxion Daily S&P 500 Bull 3x Shares
SPXL
$5.59B
| $293K | 0.02% |
14,176
-30,424
| -68% | -$629K |
|
|
LXK
365
DELISTED
Lexmark Intl Inc
LXK
| $291K | 0.02% |
+8,989
| New | +$291K |
|
366
PENN Entertainment
PENN
$2.8B
| $291K | 0.02% |
18,175
+16,075
| +765% | +$257K |
|
367
Zillow
ZG
$20.9B
| $290K | 0.02% |
+11,134
| New | +$290K |
|
368
Trinity Industries
TRN
$2.31B
| $289K | 0.02% |
+16,725
| New | +$289K |
|
369
Sturm, Ruger & Co
RGR
$635M
| $285K | 0.02% |
+4,784
| New | +$285K |
|
370
Ryder
R
$7.57B
| $284K | 0.02% |
+5,000
| New | +$284K |
|
|
PSXP
371
DELISTED
PHILLIPS 66 PARTNERS LP
PSXP
| $282K | 0.02% |
4,600
+3,724
| +425% | +$228K |
|
372
AMN Healthcare
AMN
$738M
| $280K | 0.02% |
9,029
+4,906
| +119% | +$152K |
|
373
DaVita
DVA
$9.31B
| $280K | 0.02% |
+4,021
| New | +$280K |
|
374
Melco Resorts & Entertainment
MLCO
$3.76B
| $279K | 0.02% |
16,615
+71
| +0.4% | +$1.19K |
|
375
Teradata
TDC
$2.1B
| $279K | 0.02% |
10,591
-4,682
| -31% | -$123K |
|