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 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$32.1M |
| 2 |
PARA
Paramount Global Class B
PARA
|
$23.3M |
| 3 |
Pinduoduo
PDD
|
$17.3M |
| 4 |
Pfizer
PFE
|
$16.8M |
| 5 |
American Airlines Group
AAL
|
$14.5M |
Top Sells
| 1 |
Amazon
AMZN
|
$64.4M |
| 2 |
Alphabet (Google) Class C
GOOG
|
$38.1M |
| 3 |
AutoZone
AZO
|
$32.2M |
| 4 |
SPDR S&P 500 ETF Trust
SPY
|
$25.3M |
| 5 |
Apple
AAPL
|
$22.5M |
Sector Composition
| 1 | Technology | 20.25% |
| 2 | Consumer Discretionary | 15.22% |
| 3 | Healthcare | 10.03% |
| 4 | Financials | 9.2% |
| 5 | Industrials | 9.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
301
BGC Group
BGC
$4.71B
| $1.4M | ﹤0.01% |
289,397
+231,995
| +404% | +$1.12M |
|
302
MongoDB
MDB
$26.4B
| $1.39M | ﹤0.01% |
5,190
-7,777
| -60% | -$2.08M |
|
303
CVS Health
CVS
$93.6B
| $1.38M | ﹤0.01% |
+18,390
| New | +$1.38M |
|
304
Sunrun
RUN
$4.19B
| $1.37M | ﹤0.01% |
22,724
+17,299
| +319% | +$1.05M |
|
305
VanEck Junior Gold Miners ETF
GDXJ
$7B
| $1.37M | ﹤0.01% |
+30,458
| New | +$1.37M |
|
306
British American Tobacco
BTI
$122B
| $1.37M | ﹤0.01% |
35,296
+7,340
| +26% | +$284K |
|
307
Elastic
ESTC
$9.21B
| $1.36M | ﹤0.01% |
12,254
+11,627
| +1,854% | +$1.29M |
|
308
SAP
SAP
$313B
| $1.36M | ﹤0.01% |
11,084
-132
| -1% | -$16.2K |
|
|
JWN
309
DELISTED
Nordstrom
JWN
| $1.36M | ﹤0.01% |
+35,883
| New | +$1.36M |
|
310
Helmerich & Payne
HP
$2.01B
| $1.36M | ﹤0.01% |
+50,275
| New | +$1.36M |
|
311
Curis
CRIS
$21M
| $1.35M | ﹤0.01% |
5,968
+3,270
| +121% | +$740K |
|
312
VeriSign
VRSN
$26.2B
| $1.34M | ﹤0.01% |
+6,718
| New | +$1.34M |
|
|
DISCK
313
DELISTED
Discovery, Inc. Series C Common Stock
DISCK
| $1.33M | ﹤0.01% |
35,938
+15,424
| +75% | +$569K |
|
314
State Street
STT
$32B
| $1.32M | ﹤0.01% |
+15,770
| New | +$1.32M |
|
|
GOOS
315
Canada Goose Holdings
GOOS
$1.3B
| $1.32M | ﹤0.01% |
+33,702
| New | +$1.32M |
|
|
KC
316
Kingsoft Cloud Holdings
KC
$3.78B
| $1.32M | ﹤0.01% |
33,609
-7,079
| -17% | -$278K |
|
|
DNMR
317
DELISTED
Danimer Scientific, Inc.
DNMR
| $1.31M | ﹤0.01% |
+870
| New | +$1.31M |
|
|
ZNTE
318
DELISTED
Zanite Acquisition Corp. Class A Common Stock
ZNTE
| $1.31M | ﹤0.01% |
+131,704
| New | +$1.31M |
|
319
ProShares UltraPro QQQ
TQQQ
$26.7B
| $1.31M | ﹤0.01% |
28,700
+240
| +0.8% | +$10.9K |
|
320
Radware
RDWR
$1.07B
| $1.31M | ﹤0.01% |
50,134
+31,172
| +164% | +$813K |
|
321
PagSeguro Digital
PAGS
$2.8B
| $1.3M | ﹤0.01% |
28,061
+6,652
| +31% | +$308K |
|
322
Kratos Defense & Security Solutions
KTOS
$10.9B
| $1.29M | ﹤0.01% |
47,399
+40,087
| +548% | +$1.09M |
|
323
Invesco WilderHill Clean Energy ETF
PBW
$357M
| $1.27M | ﹤0.01% |
12,923
-7,029
| -35% | -$691K |
|
324
Fortive
FTV
$16.2B
| $1.27M | ﹤0.01% |
17,936
+4,301
| +32% | +$304K |
|
325
Coterra Energy
CTRA
$18.3B
| $1.26M | ﹤0.01% |
67,224
-36,363
| -35% | -$683K |
|