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 | |
|---|---|---|---|---|---|---|
1901
Columbia Sportswear
COLM
$2.95B
| $28K | ﹤0.01% |
+266
| New | +$28K |
|
1902
Emcor
EME
$27.7B
| $28K | ﹤0.01% |
252
+77
| +44% | +$8.56K |
|
1903
Idacorp
IDA
$6.73B
| $28K | ﹤0.01% |
+281
| New | +$28K |
|
1904
Amplify Mobile Payments ETF
IPAY
$271M
| $28K | ﹤0.01% |
+422
| New | +$28K |
|
1905
iShares US Energy ETF
IYE
$1.16B
| $28K | ﹤0.01% |
+1,102
| New | +$28K |
|
1906
Paysign
PAYS
$313M
| $28K | ﹤0.01% |
6,505
+5,276
| +429% | +$22.7K |
|
|
PBT
1907
Permian Basin Royalty Trust
PBT
$862M
| $28K | ﹤0.01% |
7,056
+6,207
| +731% | +$24.6K |
|
1908
Invesco Dorsey Wright Technology Momentum ETF
PTF
$381M
| $28K | ﹤0.01% |
+600
| New | +$28K |
|
1909
Champion Homes, Inc.
SKY
$4.41B
| $28K | ﹤0.01% |
631
-10,466
| -94% | -$464K |
|
|
TRIB
1910
Trinity Biotech
TRIB
$4.47M
| $28K | ﹤0.01% |
+1,504
| New | +$28K |
|
1911
TRX Gold Corp
TRX
$148M
| $28K | ﹤0.01% |
+47,568
| New | +$28K |
|
|
CXP
1912
DELISTED
COLUMBIA PROPERTY TRUST, INC.
CXP
| $28K | ﹤0.01% |
+1,646
| New | +$28K |
|
1913
Accel Entertainment
ACEL
$920M
| $27K | ﹤0.01% |
2,527
-888
| -26% | -$9.49K |
|
1914
SPDR Bloomberg 1-3 Month T-Bill ETF
BIL
$42B
| $27K | ﹤0.01% |
305
-8,500
| -97% | -$752K |
|
1915
Camtek
CAMT
$3.92B
| $27K | ﹤0.01% |
+930
| New | +$27K |
|
1916
Invesco DB Precious Metals Fund
DBP
$211M
| $27K | ﹤0.01% |
589
+500
| +562% | +$22.9K |
|
1917
Invesco Leisure and Entertainment ETF
PEJ
$354M
| $27K | ﹤0.01% |
604
+550
| +1,019% | +$24.6K |
|
1918
Siebert Financial
SIEB
$123M
| $27K | ﹤0.01% |
+6,887
| New | +$27K |
|
|
GMLP
1919
DELISTED
Golar LNG Partners LP
GMLP
| $27K | ﹤0.01% |
+7,904
| New | +$27K |
|
|
CHIX
1920
DELISTED
Global X MSCI China Financials ETF
CHIX
| $27K | ﹤0.01% |
1,663
+1,264
| +317% | +$20.5K |
|
1921
Airgain
AIRG
$51.4M
| $26K | ﹤0.01% |
1,245
+719
| +137% | +$15K |
|
1922
Apogee Enterprises
APOG
$911M
| $26K | ﹤0.01% |
+660
| New | +$26K |
|
1923
Community Bank
CBU
$3.07B
| $26K | ﹤0.01% |
343
+258
| +304% | +$19.6K |
|
1924
Vaalco Energy
EGY
$446M
| $26K | ﹤0.01% |
11,853
+10,963
| +1,232% | +$24K |
|
1925
Escalade
ESCA
$170M
| $26K | ﹤0.01% |
1,276
-2,069
| -62% | -$42.2K |
|