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 | |
|---|---|---|---|---|---|---|
1926
Golar LNG
GLNG
$4.1B
| $26K | ﹤0.01% |
2,610
-32,257
| -93% | -$321K |
|
1927
Healthcare Services Group
HCSG
$1.16B
| $26K | ﹤0.01% |
+928
| New | +$26K |
|
1928
Smart Sand
SND
$74.7M
| $26K | ﹤0.01% |
+10,412
| New | +$26K |
|
1929
Unilever
UL
$153B
| $26K | ﹤0.01% |
479
-43,253
| -99% | -$2.35M |
|
|
ACOR
1930
DELISTED
Acorda Therapeutics, Inc.
ACOR
| $26K | ﹤0.01% |
+277
| New | +$26K |
|
1931
Teucrium Sugar Fund
CANE
$12.6M
| $25K | ﹤0.01% |
3,569
+2,121
| +146% | +$14.9K |
|
1932
Denali Therapeutics
DNLI
$1.92B
| $25K | ﹤0.01% |
+449
| New | +$25K |
|
1933
OceanFirst Financial
OCFC
$1.03B
| $25K | ﹤0.01% |
1,070
+925
| +638% | +$21.6K |
|
1934
Royal Gold
RGLD
$12.9B
| $25K | ﹤0.01% |
+239
| New | +$25K |
|
1935
Sunstone Hotel Investors
SHO
$1.83B
| $25K | ﹤0.01% |
2,072
-30,150
| -94% | -$364K |
|
1936
Stoke Therapeutics
STOK
$1.28B
| $25K | ﹤0.01% |
+661
| New | +$25K |
|
1937
United Parcel Service
UPS
$71.2B
| $25K | ﹤0.01% |
150
| – | – |
|
|
AAN
1938
DELISTED
The Aaron's Company, Inc.
AAN
| $25K | ﹤0.01% |
991
-22,188
| -96% | -$560K |
|
|
AIRC
1939
DELISTED
Apartment Income REIT Corp.
AIRC
| $25K | ﹤0.01% |
+597
| New | +$25K |
|
|
AEGN
1940
DELISTED
Aegion Corp
AEGN
| $25K | ﹤0.01% |
896
-102
| -10% | -$2.85K |
|
1941
BCE
BCE
$22.1B
| $24K | ﹤0.01% |
539
-1,052
| -66% | -$46.8K |
|
|
DNB
1942
DELISTED
Dun & Bradstreet
DNB
| $24K | ﹤0.01% |
1,030
+953
| +1,238% | +$22.2K |
|
1943
FS KKR Capital
FSK
$4.75B
| $24K | ﹤0.01% |
+1,232
| New | +$24K |
|
|
MREO
1944
Mereo BioPharma
MREO
$280M
| $24K | ﹤0.01% |
+7,379
| New | +$24K |
|
1945
QuinStreet
QNST
$933M
| $24K | ﹤0.01% |
+1,220
| New | +$24K |
|
1946
QuickLogic
QUIK
$93M
| $24K | ﹤0.01% |
3,564
+1,621
| +83% | +$10.9K |
|
1947
Sunoco
SUN
$6.83B
| $24K | ﹤0.01% |
+772
| New | +$24K |
|
1948
Vanguard Short-Term Treasury ETF
VGSH
$22.9B
| $24K | ﹤0.01% |
+400
| New | +$24K |
|
1949
Westamerica Bancorp
WABC
$1.23B
| $24K | ﹤0.01% |
394
+334
| +557% | +$20.3K |
|
|
RCM
1950
DELISTED
R1 RCM Inc. Common Stock
RCM
| $24K | ﹤0.01% |
+1,002
| New | +$24K |
|