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 | |
|---|---|---|---|---|---|---|
|
TUP
701
DELISTED
Tupperware Brands Corporation
TUP
| $475K | ﹤0.01% |
+18,009
| New | +$475K |
|
702
NIO
NIO
$13.9B
| $474K | ﹤0.01% |
12,171
-203,448
| -94% | -$7.92M |
|
703
Tootsie Roll Industries
TR
$3B
| $472K | ﹤0.01% |
16,036
+13,064
| +440% | +$385K |
|
704
abrdn Physical Silver Shares ETF
SIVR
$2.55B
| $471K | ﹤0.01% |
19,962
+9,327
| +88% | +$220K |
|
|
GPUS
705
Hyperscale Data, Inc.
GPUS
$10.2M
| $470K | ﹤0.01% |
1
| – | – |
|
|
XM
706
DELISTED
Qualtrics International Inc. Class A Common Stock
XM
| $470K | ﹤0.01% |
+14,290
| New | +$470K |
|
707
iShares International Select Dividend ETF
IDV
$5.77B
| $469K | ﹤0.01% |
+14,917
| New | +$469K |
|
708
Citizens Financial Group
CFG
$22.3B
| $468K | ﹤0.01% |
10,620
-10,090
| -49% | -$445K |
|
709
Everest Group
EG
$14.2B
| $468K | ﹤0.01% |
1,889
-504
| -21% | -$125K |
|
|
ARNA
710
DELISTED
Arena Pharmaceuticals Inc
ARNA
| $468K | ﹤0.01% |
6,749
+3,166
| +88% | +$220K |
|
711
Evercore
EVR
$12.5B
| $467K | ﹤0.01% |
+3,546
| New | +$467K |
|
712
Bit Digital
BTBT
$820M
| $466K | ﹤0.01% |
+31,049
| New | +$466K |
|
713
Eldorado Gold
EGO
$5.35B
| $466K | ﹤0.01% |
+43,243
| New | +$466K |
|
714
MarineMax
HZO
$566M
| $465K | ﹤0.01% |
9,438
+5,482
| +139% | +$270K |
|
715
Ternium
TX
$6.74B
| $464K | ﹤0.01% |
11,971
+2,004
| +20% | +$77.7K |
|
|
SPAK
716
DELISTED
Defiance Next Gen SPAC Derived ETF
SPAK
| $464K | ﹤0.01% |
+17,583
| New | +$464K |
|
717
Fox Factory Holding Corp
FOXF
$1.24B
| $463K | ﹤0.01% |
3,644
+3,443
| +1,713% | +$437K |
|
718
Teucrium Wheat Fund
WEAT
$118M
| $463K | ﹤0.01% |
77,090
+48,605
| +171% | +$292K |
|
719
Mercer International
MERC
$214M
| $462K | ﹤0.01% |
+32,165
| New | +$462K |
|
|
ZGNX
720
DELISTED
Zogenix, Inc.
ZGNX
| $461K | ﹤0.01% |
23,618
+13,625
| +136% | +$266K |
|
721
First Majestic Silver
AG
$4.61B
| $460K | ﹤0.01% |
29,549
+7,419
| +34% | +$115K |
|
722
EyePoint Pharmaceuticals
EYPT
$941M
| $460K | ﹤0.01% |
45,298
+42,614
| +1,588% | +$433K |
|
|
AVTA
723
DELISTED
Avantax, Inc. Common Stock
AVTA
| $460K | ﹤0.01% |
27,676
-72
| -0.3% | -$1.2K |
|
724
VSE Corp
VSEC
$3.46B
| $459K | ﹤0.01% |
+11,626
| New | +$459K |
|
725
Academy Sports + Outdoors
ASO
$3.36B
| $458K | ﹤0.01% |
+16,982
| New | +$458K |
|