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 | |
|---|---|---|---|---|---|---|
926
Eastern Bankshares
EBC
$3.37B
| $281K | ﹤0.01% |
14,613
-45,614
| -76% | -$877K |
|
927
Generac Holdings
GNRC
$10.9B
| $281K | ﹤0.01% |
860
+69
| +9% | +$22.5K |
|
928
VanEck Social Sentiment ETF
BUZZ
$102M
| $280K | ﹤0.01% |
+11,604
| New | +$280K |
|
929
Zynex
ZYXI
$44.2M
| $280K | ﹤0.01% |
+20,230
| New | +$280K |
|
|
NCTY
930
The9 Ltd
NCTY
$134M
| $279K | ﹤0.01% |
+897
| New | +$279K |
|
|
CLVS
931
DELISTED
Clovis Oncology, Inc.
CLVS
| $279K | ﹤0.01% |
39,755
+39,455
| +13,152% | +$277K |
|
932
Teekay Tankers
TNK
$1.79B
| $278K | ﹤0.01% |
20,011
-2,463
| -11% | -$34.2K |
|
933
TechnipFMC
FTI
$16.8B
| $277K | ﹤0.01% |
+35,896
| New | +$277K |
|
934
iShares Core MSCI Emerging Markets ETF
IEMG
$105B
| $276K | ﹤0.01% |
4,302
+1,649
| +62% | +$106K |
|
935
Methode Electronics
MEI
$292M
| $276K | ﹤0.01% |
6,579
+3,122
| +90% | +$131K |
|
936
89bio
ETNB
$1.26B
| $275K | ﹤0.01% |
+11,619
| New | +$275K |
|
937
Telefonica
TEF
$29.9B
| $275K | ﹤0.01% |
68,444
+27,675
| +68% | +$111K |
|
938
Western Midstream Partners
WES
$14.6B
| $275K | ﹤0.01% |
+14,800
| New | +$275K |
|
|
ACGN
939
DELISTED
Aceragen, Inc. Common Stock
ACGN
| $274K | ﹤0.01% |
12,433
+12,264
| +7,257% | +$270K |
|
940
Booz Allen Hamilton
BAH
$12.6B
| $273K | ﹤0.01% |
+3,401
| New | +$273K |
|
941
Herc Holdings
HRI
$4.43B
| $273K | ﹤0.01% |
2,704
+1,812
| +203% | +$183K |
|
942
CenterPoint Energy
CNP
$24.7B
| $272K | ﹤0.01% |
12,021
-21,778
| -64% | -$493K |
|
|
ORBC
943
DELISTED
ORBCOMM, Inc.
ORBC
| $272K | ﹤0.01% |
35,672
+13,373
| +60% | +$102K |
|
944
Nu Skin
NUS
$570M
| $270K | ﹤0.01% |
5,106
-2,325
| -31% | -$123K |
|
945
iShare MSCI Eurozone ETF
EZU
$7.89B
| $269K | ﹤0.01% |
5,809
+4,700
| +424% | +$218K |
|
946
Vanguard Long-Term Corporate Bond ETF
VCLT
$6.91B
| $268K | ﹤0.01% |
2,650
+2,571
| +3,254% | +$260K |
|
947
Galicia Financial Group
GGAL
$5.15B
| $267K | ﹤0.01% |
35,162
-1,701
| -5% | -$12.9K |
|
|
TPIC
948
DELISTED
TPI Composites
TPIC
| $267K | ﹤0.01% |
4,747
+3,221
| +211% | +$181K |
|
|
COW
949
DELISTED
iPath Series B Bloomberg Livestock Subindex Total ReturnSM ETN
COW
| $266K | ﹤0.01% |
6,920
+4,007
| +138% | +$154K |
|
950
Credicorp
BAP
$21B
| $266K | ﹤0.01% |
+1,953
| New | +$266K |
|