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
|
$80M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$45.3M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$38.8M |
| 4 |
Amazon
AMZN
|
$38.6M |
| 5 |
Tesla
TSLA
|
$36M |
Top Sells
| 1 |
Alibaba
BABA
|
$46.4M |
| 2 |
Boeing
BA
|
$29.8M |
| 3 |
SPDR Gold Trust
GLD
|
$18.2M |
| 4 |
Biogen
BIIB
|
$15.8M |
| 5 |
NVIDIA
NVDA
|
$14.3M |
Sector Composition
| 1 | Technology | 22.73% |
| 2 | Consumer Discretionary | 17.54% |
| 3 | Communication Services | 10.03% |
| 4 | Healthcare | 9.29% |
| 5 | Industrials | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
451
Global X Lithium & Battery Tech ETF
LIT
$1.16B
| $522K | ﹤0.01% |
19,095
+19,068
| +70,622% | +$521K |
|
|
AMRS
452
DELISTED
Amyris Inc.
AMRS
| $519K | ﹤0.01% |
168,089
+76,554
| +84% | +$236K |
|
|
IPHI
453
DELISTED
INPHI CORPORATION
IPHI
| $519K | ﹤0.01% |
7,021
+3,773
| +116% | +$279K |
|
|
QTNT
454
DELISTED
Quotient Limited Ordinary Shares
QTNT
| $518K | ﹤0.01% |
1,364
+1,025
| +302% | +$389K |
|
455
Stepan Co
SCL
$1.13B
| $517K | ﹤0.01% |
+5,052
| New | +$517K |
|
456
FuelCell Energy
FCEL
$92.3M
| $510K | ﹤0.01% |
+6,775
| New | +$510K |
|
|
AJRD
457
DELISTED
Aerojet Rocketdyne Holdings, Inc.
AJRD
| $508K | ﹤0.01% |
11,127
+10,734
| +2,731% | +$490K |
|
|
CIT
458
DELISTED
CIT Group Inc.
CIT
| $504K | ﹤0.01% |
+11,061
| New | +$504K |
|
459
MBIA
MBI
$377M
| $503K | ﹤0.01% |
54,134
+41,228
| +319% | +$383K |
|
460
KLA
KLAC
$119B
| $502K | ﹤0.01% |
+2,823
| New | +$502K |
|
461
Consumers Staples Select Sector SPDR Fund
XLP
$15.8B
| $500K | ﹤0.01% |
+7,948
| New | +$500K |
|
462
Karyopharm Therapeutics
KPTI
$57.2M
| $498K | ﹤0.01% |
1,735
+1,644
| +1,807% | +$472K |
|
463
Hershey
HSY
$37.6B
| $497K | ﹤0.01% |
+3,383
| New | +$497K |
|
464
Genesco
GCO
$360M
| $496K | ﹤0.01% |
10,367
+8,994
| +655% | +$430K |
|
465
Ashland
ASH
$2.51B
| $494K | ﹤0.01% |
6,456
-6,895
| -52% | -$528K |
|
466
McCormick & Company Non-Voting
MKC
$19B
| $491K | ﹤0.01% |
5,790
+2,388
| +70% | +$203K |
|
467
Direxion Daily 20+ Year Treasury Bear 3X Shares
TMV
$166M
| $486K | ﹤0.01% |
+16,480
| New | +$486K |
|
468
QuinStreet
QNST
$920M
| $484K | ﹤0.01% |
31,616
+10,621
| +51% | +$163K |
|
469
Waste Management
WM
$88.6B
| $478K | ﹤0.01% |
4,202
-1,295
| -24% | -$147K |
|
|
EBSB
470
DELISTED
Meridian Bancorp, Inc.
EBSB
| $475K | ﹤0.01% |
23,665
+13,429
| +131% | +$270K |
|
471
Asbury Automotive
ABG
$5.06B
| $473K | ﹤0.01% |
4,233
+3,712
| +712% | +$415K |
|
472
Builders FirstSource
BLDR
$16.5B
| $473K | ﹤0.01% |
18,640
-16,445
| -47% | -$417K |
|
473
iRobot
IRBT
$102M
| $470K | ﹤0.01% |
9,287
-17,528
| -65% | -$887K |
|
474
iShares S&P 500 Value ETF
IVE
$41B
| $469K | ﹤0.01% |
+3,611
| New | +$469K |
|
475
Adverum Biotechnologies
ADVM
$73.9M
| $466K | ﹤0.01% |
+4,046
| New | +$466K |
|