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 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$278M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$84.4M |
| 3 |
NVIDIA
NVDA
|
+$76.9M |
| 4 |
TSMC
TSM
|
+$74.9M |
| 5 |
Amazon
AMZN
|
+$53.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$497M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
+$73.7M |
| 3 |
Alibaba
BABA
|
+$49M |
| 4 |
Advanced Micro Devices
AMD
|
+$48.1M |
| 5 |
Uber
UBER
|
+$41.8M |
Sector Composition
| 1 | Technology | 22.9% |
| 2 | Consumer Discretionary | 12.26% |
| 3 | Healthcare | 9.52% |
| 4 | Communication Services | 8.42% |
| 5 | Financials | 7.07% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
626
First Trust Dow Jones Internet Index Fund ETF
FDN
$7.91B
| $402K | ﹤0.01% |
+1,810
| New | +$402K |
|
627
Gentex
GNTX
$6.15B
| $402K | ﹤0.01% |
+17,292
| New | +$402K |
|
628
Gaotu Techedu
GOTU
$865M
| $400K | ﹤0.01% |
123,139
+90,512
| +277% | +$294K |
|
629
Sunrun
RUN
$3.74B
| $398K | ﹤0.01% |
68,059
-208,392
| -75% | -$1.22M |
|
630
Burford Capital
BUR
$2.73B
| $397K | ﹤0.01% |
30,061
+14,523
| +93% | +$192K |
|
631
Jefferies Financial Group
JEF
$13.5B
| $396K | ﹤0.01% |
7,395
+998
| +16% | +$53.4K |
|
632
TORM
TRMD
$2.21B
| $396K | ﹤0.01% |
24,075
+11,408
| +90% | +$188K |
|
633
FS KKR Capital
FSK
$4.98B
| $395K | ﹤0.01% |
18,884
+331
| +2% | +$6.92K |
|
634
Masimo
MASI
$7.92B
| $389K | ﹤0.01% |
2,338
+1,513
| +183% | +$252K |
|
635
Open Lending Corp
LPRO
$253M
| $388K | ﹤0.01% |
+140,774
| New | +$388K |
|
636
Direxion Daily MSFT Bull 2X Shares
MSFU
$140M
| $388K | ﹤0.01% |
13,030
+7,437
| +133% | +$221K |
|
637
ON Semiconductor
ON
$19.7B
| $388K | ﹤0.01% |
+9,548
| New | +$388K |
|
638
Portillo's
PTLO
$442M
| $388K | ﹤0.01% |
+32,671
| New | +$388K |
|
639
Cardiff Oncology
CRDF
$136M
| $387K | ﹤0.01% |
123,433
+96,369
| +356% | +$302K |
|
640
Melco Resorts & Entertainment
MLCO
$3.8B
| $386K | ﹤0.01% |
73,349
-130,896
| -64% | -$689K |
|
641
Skywest
SKYW
$4.37B
| $385K | ﹤0.01% |
4,415
-4,676
| -51% | -$408K |
|
642
Unum
UNM
$12.6B
| $385K | ﹤0.01% |
4,732
-7,371
| -61% | -$600K |
|
643
Customers Bancorp
CUBI
$2.35B
| $384K | ﹤0.01% |
+7,655
| New | +$384K |
|
644
Vanguard World Funds Extended Duration ETF
EDV
$3.71B
| $383K | ﹤0.01% |
+5,396
| New | +$383K |
|
645
Estee Lauder
EL
$31.5B
| $383K | ﹤0.01% |
+5,814
| New | +$383K |
|
646
Northern Trust
NTRS
$24.2B
| $383K | ﹤0.01% |
+3,883
| New | +$383K |
|
|
BBBY
647
Bed Bath & Beyond, Inc.
BBBY
$592M
| $382K | ﹤0.01% |
66,006
+24,146
| +58% | +$140K |
|
648
Vipshop
VIPS
$8.85B
| $382K | ﹤0.01% |
24,419
-45,261
| -65% | -$708K |
|
649
Teucrium Wheat Fund
WEAT
$116M
| $381K | ﹤0.01% |
81,557
-18,982
| -19% | -$88.7K |
|
650
Bitwise Bitcoin ETF
BITB
$4.37B
| $379K | ﹤0.01% |
8,453
+2,864
| +51% | +$128K |
|