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
|
$35.2M |
| 2 |
Micron Technology
MU
|
$32.9M |
| 3 |
Berkshire Hathaway Class B
BRK.B
|
$29.5M |
| 4 |
NVIDIA
NVDA
|
$22.9M |
| 5 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$22M |
Top Sells
| 1 |
TWX
Time Warner Inc
TWX
|
$34.8M |
| 2 |
Amazon
AMZN
|
$33.4M |
| 3 |
Tesla
TSLA
|
$19.8M |
| 4 |
Netflix
NFLX
|
$17.7M |
| 5 |
TWTR
Twitter, Inc.
TWTR
|
$13.5M |
Sector Composition
| 1 | Technology | 20.43% |
| 2 | Consumer Discretionary | 15.24% |
| 3 | Communication Services | 12% |
| 4 | Financials | 10.18% |
| 5 | Industrials | 9.87% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
SEND
601
DELISTED
SendGrid, Inc.
SEND
| $306K | ﹤0.01% |
11,556
+10,917
| +1,708% | +$289K |
|
602
Adient
ADNT
$2B
| $305K | ﹤0.01% |
+6,206
| New | +$305K |
|
603
Supernus Pharmaceuticals
SUPN
$2.58B
| $305K | ﹤0.01% |
5,112
+1,638
| +47% | +$97.7K |
|
|
CMD
604
DELISTED
Cantel Medical Corporation
CMD
| $303K | ﹤0.01% |
+3,083
| New | +$303K |
|
|
CLUB
605
DELISTED
Town Sports International Holdings, Inc.
CLUB
| $303K | ﹤0.01% |
+20,865
| New | +$303K |
|
606
Enovis
ENOV
$1.84B
| $301K | ﹤0.01% |
5,709
+5,341
| +1,451% | +$282K |
|
607
GATX Corp
GATX
$5.97B
| $301K | ﹤0.01% |
+4,065
| New | +$301K |
|
608
Kirby Corp
KEX
$4.97B
| $299K | ﹤0.01% |
+3,587
| New | +$299K |
|
609
Blackbaud
BLKB
$3.23B
| $298K | ﹤0.01% |
+2,918
| New | +$298K |
|
610
Golden Entertainment
GDEN
$649M
| $297K | ﹤0.01% |
11,011
+8,394
| +321% | +$226K |
|
611
Lear
LEA
$5.91B
| $297K | ﹤0.01% |
+1,599
| New | +$297K |
|
612
L3Harris
LHX
$51B
| $297K | ﹤0.01% |
2,057
-7,725
| -79% | -$1.12M |
|
613
Ford
F
$46.7B
| $296K | ﹤0.01% |
+26,793
| New | +$296K |
|
|
B
614
Barrick Mining Corporation
B
$48.5B
| $296K | ﹤0.01% |
+22,563
| New | +$296K |
|
615
SK Telecom
SKM
$8.38B
| $296K | ﹤0.01% |
7,722
+120
| +2% | +$4.6K |
|
616
SPDR S&P Oil & Gas Exploration & Production ETF
XOP
$1.85B
| $296K | ﹤0.01% |
1,723
-30,048
| -95% | -$5.16M |
|
617
Plains All American Pipeline
PAA
$12.1B
| $295K | ﹤0.01% |
+12,500
| New | +$295K |
|
618
iShares US Technology ETF
IYW
$23.1B
| $293K | ﹤0.01% |
6,588
+3,596
| +120% | +$160K |
|
619
Alamos Gold
AGI
$13.5B
| $291K | ﹤0.01% |
51,184
+46,430
| +977% | +$264K |
|
620
Direxion Daily Junior Gold Miners Index Bull 2X Shares
JNUG
$478M
| $291K | ﹤0.01% |
+427
| New | +$291K |
|
621
New York Times
NYT
$9.6B
| $291K | ﹤0.01% |
11,273
-6,661
| -37% | -$172K |
|
622
Super Micro Computer
SMCI
$24B
| $291K | ﹤0.01% |
123,120
+29,670
| +32% | +$70.1K |
|
|
VWTR
623
DELISTED
Vidler Water Resouces, Inc. Common Stock
VWTR
| $290K | ﹤0.01% |
24,965
+20,569
| +468% | +$239K |
|
624
United States Gasoline Fund
UGA
$76.5M
| $288K | ﹤0.01% |
+8,351
| New | +$288K |
|
625
Franklin Covey
FC
$244M
| $285K | ﹤0.01% |
11,614
-88,302
| -88% | -$2.17M |
|