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 | |
|---|---|---|---|---|---|---|
551
Senseonics Holdings
SENS
$373M
| $664K | ﹤0.01% |
+251,665
| New | +$664K |
|
552
Jefferies Financial Group
JEF
$13.1B
| $663K | ﹤0.01% |
+23,054
| New | +$663K |
|
|
LOV
553
DELISTED
Spark Networks SE American Depositary Shares
LOV
| $663K | ﹤0.01% |
+89,034
| New | +$663K |
|
|
HGEN
554
DELISTED
HUMANIGEN, INC.
HGEN
| $663K | ﹤0.01% |
34,717
+19,150
| +123% | +$366K |
|
555
3D Systems Corporation
DDD
$272M
| $662K | ﹤0.01% |
24,126
+24,026
| +24,026% | +$659K |
|
556
LoveSac
LOVE
$297M
| $661K | ﹤0.01% |
11,684
+8,472
| +264% | +$479K |
|
|
IGAC
557
DELISTED
IG Acquisition Corp. Class A Common Stock
IGAC
| $660K | ﹤0.01% |
+66,893
| New | +$660K |
|
558
Cencora
COR
$56.7B
| $659K | ﹤0.01% |
5,587
+821
| +17% | +$96.8K |
|
559
Invesco Water Resources ETF
PHO
$2.29B
| $658K | ﹤0.01% |
13,324
+6,994
| +110% | +$345K |
|
560
UBS Group
UBS
$128B
| $654K | ﹤0.01% |
42,131
+17,284
| +70% | +$268K |
|
561
SPDR S&P Retail ETF
XRT
$441M
| $652K | ﹤0.01% |
7,318
-2,694
| -27% | -$240K |
|
562
Direxion Daily Gold Miners Index Bear 2X Shares
DUST
$62.9M
| $647K | ﹤0.01% |
+2,898
| New | +$647K |
|
563
CryoPort
CYRX
$518M
| $643K | ﹤0.01% |
12,378
-10,909
| -47% | -$567K |
|
564
Direxion Daily Aerospace & Defense Bull 3X Shares
DFEN
$327M
| $643K | ﹤0.01% |
30,050
+4,186
| +16% | +$89.6K |
|
565
Alto Ingredients
ALTO
$90.6M
| $642K | ﹤0.01% |
118,297
+12,559
| +12% | +$68.2K |
|
566
Danaos Corp
DAC
$1.75B
| $642K | ﹤0.01% |
+12,950
| New | +$642K |
|
567
Global X Lithium & Battery Tech ETF
LIT
$1.16B
| $642K | ﹤0.01% |
10,986
-63,210
| -85% | -$3.69M |
|
|
QNGY
568
DELISTED
Quanergy Systems, Inc.
QNGY
| $641K | ﹤0.01% |
+3,209
| New | +$641K |
|
569
Energy Fuels
UUUU
$2.67B
| $640K | ﹤0.01% |
112,743
+15,373
| +16% | +$87.3K |
|
570
Icahn Enterprises
IEP
$4.83B
| $639K | ﹤0.01% |
11,897
+6,274
| +112% | +$337K |
|
571
Universal Health Services
UHS
$12.1B
| $639K | ﹤0.01% |
+4,797
| New | +$639K |
|
572
Willis Towers Watson
WTW
$32.1B
| $638K | ﹤0.01% |
2,790
+2,777
| +21,362% | +$635K |
|
573
AvePoint
AVPT
$3.45B
| $636K | ﹤0.01% |
57,422
+24,040
| +72% | +$266K |
|
574
iShares S&P GSCI Commodity-Indexed Trust
GSG
$1.03B
| $633K | ﹤0.01% |
45,330
+31,073
| +218% | +$434K |
|
575
BILL Holdings
BILL
$5.24B
| $629K | ﹤0.01% |
4,328
-3,024
| -41% | -$439K |
|