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 |
Apple
AAPL
|
+$35.2M |
| 2 |
Micron Technology
MU
|
+$32.9M |
| 3 |
Berkshire Hathaway Class B
BRK.B
|
+$29.5M |
| 4 |
NVIDIA
NVDA
|
+$22.9M |
| 5 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$22M |
Top Sells
| 1 |
TWX
Time Warner Inc
TWX
|
+$34.8M |
| 2 |
Amazon
AMZN
|
+$33.4M |
| 3 |
Tesla
TSLA
|
+$19.8M |
| 4 |
Netflix
NFLX
|
+$17.7M |
| 5 |
TWTR
Twitter, Inc.
TWTR
|
+$13.5M |
Sector Composition
| 1 | Technology | 20.43% |
| 2 | Consumer Discretionary | 15.24% |
| 3 | Communication Services | 12% |
| 4 | Financials | 10.18% |
| 5 | Industrials | 9.87% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
BREW
926
DELISTED
Craft Brew Alliance, Inc.
BREW
| $125K | ﹤0.01% |
6,091
+2,077
| +52% | +$42.6K |
|
927
Columbia Financial
CLBK
$1.62B
| $124K | ﹤0.01% |
+7,501
| New | +$124K |
|
928
Innovator IBD 50 ETF
FFTY
$80M
| $124K | ﹤0.01% |
+3,551
| New | +$124K |
|
|
ZN
929
DELISTED
Zion Oil & Gas, Inc.
ZN
| $124K | ﹤0.01% |
30,682
+21,400
| +231% | +$86.5K |
|
930
KBR
KBR
$6.36B
| $123K | ﹤0.01% |
6,885
+4,896
| +246% | +$87.5K |
|
|
NCI
931
DELISTED
Navigant Consulting, Inc.
NCI
| $123K | ﹤0.01% |
5,566
+2,392
| +75% | +$52.9K |
|
932
American Water Works
AWK
$27.2B
| $122K | ﹤0.01% |
1,438
-114
| -7% | -$9.67K |
|
933
OneMain Financial
OMF
$7.26B
| $122K | ﹤0.01% |
+3,665
| New | +$122K |
|
|
TWTR
934
DELISTED
Twitter, Inc.
TWTR
| $122K | ﹤0.01% |
2,800
-310,308
| -99% | -$13.5M |
|
935
Cantaloupe
CTLP
$796M
| $121K | ﹤0.01% |
8,687
+3,315
| +62% | +$46.2K |
|
936
LGI Homes
LGIH
$1.42B
| $120K | ﹤0.01% |
2,080
-1,761
| -46% | -$102K |
|
937
Pampa Energía
PAM
$3.34B
| $120K | ﹤0.01% |
+3,360
| New | +$120K |
|
938
Pentair
PNR
$18.1B
| $120K | ﹤0.01% |
2,870
+2,097
| +271% | +$87.7K |
|
939
Simply Good Foods
SMPL
$2.76B
| $120K | ﹤0.01% |
+8,342
| New | +$120K |
|
940
Waste Connections
WCN
$45.6B
| $120K | ﹤0.01% |
+1,598
| New | +$120K |
|
|
AJRD
941
DELISTED
Aerojet Rocketdyne Holdings, Inc.
AJRD
| $120K | ﹤0.01% |
4,091
-2,948
| -42% | -$86.5K |
|
|
LOMA
942
Loma Negra
LOMA
$951M
| $119K | ﹤0.01% |
11,621
-34,308
| -75% | -$351K |
|
943
Rush Enterprises Class A
RUSHA
$4.5B
| $119K | ﹤0.01% |
+6,197
| New | +$119K |
|
|
AVTA
944
DELISTED
Avantax, Inc. Common Stock
AVTA
| $119K | ﹤0.01% |
3,224
+2,524
| +361% | +$93.2K |
|
945
AMC Networks
AMCX
$324M
| $118K | ﹤0.01% |
1,909
+1,254
| +191% | +$77.5K |
|
946
Babcock & Wilcox
BW
$247M
| $118K | ﹤0.01% |
4,982
+4,705
| +1,699% | +$111K |
|
947
iPath Bloomberg Commodity Index Total Return ETN due 12 June 2036
DJP
$587M
| $118K | ﹤0.01% |
4,847
+4,628
| +2,113% | +$113K |
|
948
VanEck Agribusiness ETF
MOO
$624M
| $118K | ﹤0.01% |
+1,906
| New | +$118K |
|
949
Pitney Bowes
PBI
$2.02B
| $118K | ﹤0.01% |
13,775
-12,025
| -47% | -$103K |
|
950
Woodward
WWD
$14.4B
| $118K | ﹤0.01% |
1,540
-449
| -23% | -$34.4K |
|