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 |
Alphabet (Google) Class C
GOOG
|
+$41.4M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
+$12.3M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$9.89M |
| 4 |
Alibaba
BABA
|
+$9.66M |
| 5 |
Intel
INTC
|
+$9.11M |
Top Sells
| 1 |
Apple
AAPL
|
+$36.8M |
| 2 |
Gilead Sciences
GILD
|
+$31.2M |
| 3 |
Booking.com
BKNG
|
+$29M |
| 4 |
Amazon
AMZN
|
+$25.6M |
| 5 |
Baidu
BIDU
|
+$12.9M |
Sector Composition
| 1 | Communication Services | 13.31% |
| 2 | Consumer Discretionary | 13.07% |
| 3 | Healthcare | 12.41% |
| 4 | Technology | 11.91% |
| 5 | Financials | 8.28% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1001
ONE Gas
OGS
$4.56B
| $28K | ﹤0.01% |
660
+223
| +51% | +$9.46K |
|
1002
Portland General Electric
POR
$4.65B
| $28K | ﹤0.01% |
777
+107
| +16% | +$3.86K |
|
1003
Ryman Hospitality Properties
RHP
$6.35B
| $28K | ﹤0.01% |
+475
| New | +$28K |
|
1004
Worthington Enterprises
WOR
$3.26B
| $28K | ﹤0.01% |
1,760
-96
| -5% | -$1.53K |
|
1005
ProShares UltraShort Silver
ZSL
$19.4M
| $28K | ﹤0.01% |
+35
| New | +$28K |
|
|
BIG
1006
DELISTED
Big Lots, Inc.
BIG
| $28K | ﹤0.01% |
+599
| New | +$28K |
|
|
PX
1007
DELISTED
Praxair Inc
PX
| $28K | ﹤0.01% |
233
-542
| -70% | -$65.1K |
|
|
CMCSK
1008
DELISTED
COMCAST CORP SPL A (NEW)
CMCSK
| $28K | ﹤0.01% |
+507
| New | +$28K |
|
1009
Adeia
ADEA
$1.71B
| $27K | ﹤0.01% |
2,620
+326
| +14% | +$3.36K |
|
|
AMED
1010
DELISTED
Amedisys
AMED
| $27K | ﹤0.01% |
1,031
-2,614
| -72% | -$68.5K |
|
1011
Franco-Nevada
FNV
$38.9B
| $27K | ﹤0.01% |
575
-2,833
| -83% | -$133K |
|
1012
Goodyear
GT
$2.45B
| $27K | ﹤0.01% |
+1,018
| New | +$27K |
|
1013
Kodak
KODK
$485M
| $27K | ﹤0.01% |
1,468
-1,776
| -55% | -$32.7K |
|
1014
Philip Morris
PM
$261B
| $27K | ﹤0.01% |
+361
| New | +$27K |
|
|
GNCMA
1015
DELISTED
GCI Liberty, Inc. Class A-1 Common Stock
GNCMA
| $27K | ﹤0.01% |
1,714
+1,662
| +3,196% | +$26.2K |
|
|
SFXE
1016
DELISTED
SFX ENTERTAINMENT, INC COM
SFXE
| $27K | ﹤0.01% |
6,810
-2,235
| -25% | -$8.86K |
|
1017
Civitas Resources
CIVI
$3.04B
| $26K | ﹤0.01% |
+10
| New | +$26K |
|
1018
Clean Energy Fuels
CLNE
$555M
| $26K | ﹤0.01% |
4,914
-3,059
| -38% | -$16.2K |
|
1019
Comstock Resources
CRK
$4.69B
| $26K | ﹤0.01% |
1,461
+596
| +69% | +$10.6K |
|
1020
Hovnanian Enterprises
HOV
$917M
| $26K | ﹤0.01% |
299
-86
| -22% | -$7.48K |
|
1021
Kirby Corp
KEX
$4.91B
| $26K | ﹤0.01% |
347
-607
| -64% | -$45.5K |
|
1022
UDR
UDR
$12.9B
| $26K | ﹤0.01% |
+782
| New | +$26K |
|
1023
Vishay Intertechnology
VSH
$2.1B
| $26K | ﹤0.01% |
+1,882
| New | +$26K |
|
|
HA
1024
DELISTED
Hawaiian Holdings, Inc.
HA
| $26K | ﹤0.01% |
+1,200
| New | +$26K |
|
|
HNGR
1025
DELISTED
Hanger Inc.
HNGR
| $26K | ﹤0.01% |
1,154
-3,846
| -77% | -$86.7K |
|