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 | |
|---|---|---|---|---|---|---|
426
Topgolf Callaway Brands
MODG
$1.7B
| $919K | ﹤0.01% |
34,388
+132
| +0.4% | +$3.53K |
|
427
Xos
XOS
$20.3M
| $919K | ﹤0.01% |
+3,091
| New | +$919K |
|
|
BBL
428
DELISTED
BHP Group Plc American Depositary Shares (Each representing two Ordinary Shares)
BBL
| $918K | ﹤0.01% |
+15,869
| New | +$918K |
|
429
Campbell Soup
CPB
$10.1B
| $917K | ﹤0.01% |
18,246
-3,265
| -15% | -$164K |
|
430
Sabesp
SBS
$15.8B
| $917K | ﹤0.01% |
125,130
+33,514
| +37% | +$246K |
|
431
Conagra Brands
CAG
$9.23B
| $916K | ﹤0.01% |
24,383
+17,499
| +254% | +$657K |
|
432
Idexx Laboratories
IDXX
$51.4B
| $914K | ﹤0.01% |
+1,869
| New | +$914K |
|
433
Weyerhaeuser
WY
$18.9B
| $914K | ﹤0.01% |
25,683
+6,558
| +34% | +$233K |
|
|
IPOD
434
DELISTED
Social Capital Hedosophia Holdings Corp. IV
IPOD
| $913K | ﹤0.01% |
+83,309
| New | +$913K |
|
435
Ecopetrol
EC
$18.7B
| $912K | ﹤0.01% |
71,208
+66,942
| +1,569% | +$857K |
|
436
Becton Dickinson
BDX
$55.1B
| $911K | ﹤0.01% |
3,844
-22,095
| -85% | -$5.24M |
|
437
ProShares Short QQQ
PSQ
$508M
| $910K | ﹤0.01% |
13,094
-5,244
| -29% | -$364K |
|
|
SWAV
438
DELISTED
Shockwave Medical, Inc. Common Stock
SWAV
| $907K | ﹤0.01% |
6,963
+1,796
| +35% | +$234K |
|
439
Healthpeak Properties
DOC
$12.8B
| $906K | ﹤0.01% |
+28,575
| New | +$906K |
|
|
SILV
440
DELISTED
SilverCrest Metals Inc. Common Shares
SILV
| $905K | ﹤0.01% |
112,093
+85,324
| +319% | +$689K |
|
441
American Well
AMWL
$113M
| $904K | ﹤0.01% |
+2,604
| New | +$904K |
|
442
First Trust NASDAQ Clean Edge Green Energy Index Fund
QCLN
$455M
| $903K | ﹤0.01% |
13,168
+13,008
| +8,130% | +$892K |
|
443
Hormel Foods
HRL
$14.1B
| $901K | ﹤0.01% |
+18,865
| New | +$901K |
|
444
Banco Santander
SAN
$141B
| $900K | ﹤0.01% |
262,646
+74,952
| +40% | +$257K |
|
|
TELL
445
DELISTED
Tellurian Inc.
TELL
| $899K | ﹤0.01% |
384,590
+372,544
| +3,093% | +$871K |
|
446
United States Gasoline Fund
UGA
$76.5M
| $891K | ﹤0.01% |
28,289
-4,699
| -14% | -$148K |
|
|
LOGC
447
DELISTED
ContextLogic
LOGC
| $891K | ﹤0.01% |
1,881
+102
| +6% | +$48.3K |
|
448
Upstart Holdings
UPST
$6.44B
| $890K | ﹤0.01% |
+6,913
| New | +$890K |
|
|
VLRS
449
Controladora Vuela Compañía de Aviación
VLRS
$707M
| $889K | ﹤0.01% |
62,351
+9,681
| +18% | +$138K |
|
|
AAMI
450
Acadian Asset Management Inc.
AAMI
$1.53B
| $886K | ﹤0.01% |
+43,488
| New | +$886K |
|