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
|
+$29.3M |
| 2 |
Industrial Select Sector SPDR Fund
XLI
|
+$23.1M |
| 3 |
iShares Russell 2000 ETF
IWM
|
+$18M |
| 4 |
Netflix
NFLX
|
+$17.4M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14M |
Top Sells
| 1 |
Invesco QQQ Trust
QQQ
|
+$120M |
| 2 |
SPDR S&P 500 ETF Trust
SPY
|
+$41.3M |
| 3 |
Walt Disney
DIS
|
+$26.9M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$13.8M |
| 5 |
Johnson & Johnson
JNJ
|
+$11.3M |
Sector Composition
| 1 | Technology | 16.22% |
| 2 | Communication Services | 16.19% |
| 3 | Healthcare | 11.36% |
| 4 | Industrials | 9.74% |
| 5 | Consumer Discretionary | 8.61% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
SGEN
426
DELISTED
Seagen Inc. Common Stock
SGEN
| $483K | ﹤0.01% |
6,979
-3,302
| -32% | -$229K |
|
427
Travelzoo
TZOO
$103M
| $478K | ﹤0.01% |
31,009
+27,676
| +830% | +$427K |
|
428
Chemours
CC
$2.44B
| $477K | ﹤0.01% |
+19,897
| New | +$477K |
|
429
Penske Automotive Group
PAG
$12.2B
| $476K | ﹤0.01% |
+10,067
| New | +$476K |
|
430
Starbucks
SBUX
$94.2B
| $476K | ﹤0.01% |
+5,680
| New | +$476K |
|
431
Iovance Biotherapeutics
IOVA
$861M
| $471K | ﹤0.01% |
+19,235
| New | +$471K |
|
432
Boyd Gaming
BYD
$6.84B
| $470K | ﹤0.01% |
+17,478
| New | +$470K |
|
|
I
433
DELISTED
INTELSAT S. A.
I
| $468K | ﹤0.01% |
24,067
+22,908
| +1,977% | +$445K |
|
|
JOYY
434
JOYY Inc. American Depositary Shares
JOYY
$3.23B
| $462K | ﹤0.01% |
6,632
-19,932
| -75% | -$1.39M |
|
435
National Health Investors
NHI
$3.71B
| $461K | ﹤0.01% |
5,918
+4,533
| +327% | +$353K |
|
436
Sea Limited
SE
$114B
| $459K | ﹤0.01% |
13,834
-58,347
| -81% | -$1.94M |
|
|
COUP
437
DELISTED
Coupa Software Incorporated
COUP
| $458K | ﹤0.01% |
3,624
-38,882
| -91% | -$4.91M |
|
438
STAAR Surgical
STAA
$1.37B
| $457K | ﹤0.01% |
15,587
+11,174
| +253% | +$328K |
|
439
DTE Energy
DTE
$28.2B
| $455K | ﹤0.01% |
+4,182
| New | +$455K |
|
440
VanEck Agribusiness ETF
MOO
$623M
| $452K | ﹤0.01% |
6,777
+5,550
| +452% | +$370K |
|
441
Wolfspeed
WOLF
$230M
| $452K | ﹤0.01% |
8,046
-2,283
| -22% | -$128K |
|
|
SIX
442
DELISTED
Six Flags Entertainment Corp.
SIX
| $451K | ﹤0.01% |
9,082
+4,595
| +102% | +$228K |
|
|
CCXI
443
DELISTED
ChemoCentryx, Inc.
CCXI
| $450K | ﹤0.01% |
48,410
+11,009
| +29% | +$102K |
|
444
Brown & Brown
BRO
$30.5B
| $446K | ﹤0.01% |
+13,332
| New | +$446K |
|
445
YPF
YPF
$11.3B
| $446K | ﹤0.01% |
24,526
-1,674
| -6% | -$30.4K |
|
|
DLPH
446
DELISTED
Delphi Technologies PLC Ordinary Shares
DLPH
| $446K | ﹤0.01% |
22,309
+14,242
| +177% | +$285K |
|
447
Huntington Bancshares
HBAN
$25.8B
| $442K | ﹤0.01% |
32,002
+22,065
| +222% | +$305K |
|
|
EBIX
448
DELISTED
Ebix Inc
EBIX
| $434K | ﹤0.01% |
+8,645
| New | +$434K |
|
449
Chord Energy
CHRD
$6.1B
| $429K | ﹤0.01% |
+75,538
| New | +$429K |
|
|
CLR
450
DELISTED
CONTINENTAL RESOURCES INC.
CLR
| $427K | ﹤0.01% |
10,162
+2,757
| +37% | +$116K |
|