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 |
Amazon
AMZN
|
+$158M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$69.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$57.4M |
| 4 |
Citigroup
C
|
+$23.4M |
| 5 |
Goldman Sachs
GS
|
+$23M |
Top Sells
| 1 |
Apple
AAPL
|
+$49.8M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
+$43.2M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$42.2M |
| 4 |
Micron Technology
MU
|
+$26.1M |
| 5 |
Adobe
ADBE
|
+$21M |
Sector Composition
| 1 | Consumer Discretionary | 20.63% |
| 2 | Communication Services | 16.3% |
| 3 | Technology | 12.42% |
| 4 | Industrials | 9.24% |
| 5 | Healthcare | 8.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1076
VanEck Agribusiness ETF
MOO
$625M
| $84K | ﹤0.01% |
1,281
-625
| -33% | -$41K |
|
1077
Plug Power
PLUG
$1.74B
| $84K | ﹤0.01% |
44,043
+17,247
| +64% | +$32.9K |
|
1078
Reading International Class A
RDI
$33.6M
| $84K | ﹤0.01% |
+5,360
| New | +$84K |
|
1079
ProShares Ultra NASDAQ Biotechnology
BIB
$55.8M
| $83K | ﹤0.01% |
+1,197
| New | +$83K |
|
1080
Direxion Daily Emerging Markets Bear 3x Shares
EDZ
$11.6M
| $83K | ﹤0.01% |
+1,629
| New | +$83K |
|
1081
iShares S&P GSCI Commodity-Indexed Trust
GSG
$997M
| $83K | ﹤0.01% |
4,622
+780
| +20% | +$14K |
|
1082
Teekay
TK
$722M
| $83K | ﹤0.01% |
12,449
+10,939
| +724% | +$72.9K |
|
|
STON
1083
DELISTED
StoneMor Inc.
STON
| $83K | ﹤0.01% |
+16,244
| New | +$83K |
|
1084
Lamar Advertising Co
LAMR
$12.9B
| $82K | ﹤0.01% |
+1,066
| New | +$82K |
|
|
NBRV
1085
DELISTED
Nabriva Therapeutics plc Ordinary Shares Ireland
NBRV
| $82K | ﹤0.01% |
122
+98
| +408% | +$65.9K |
|
1086
Barings BDC
BBDC
$983M
| $81K | ﹤0.01% |
8,094
-4,740
| -37% | -$47.4K |
|
1087
Evolution Petroleum
EPM
$179M
| $81K | ﹤0.01% |
7,358
+4,367
| +146% | +$48.1K |
|
1088
iShare MSCI Eurozone ETF
EZU
$7.97B
| $81K | ﹤0.01% |
+1,985
| New | +$81K |
|
1089
Liberty Latin America Class A
LILA
$1.5B
| $81K | ﹤0.01% |
4,161
-36,692
| -90% | -$714K |
|
|
SUP
1090
DELISTED
Superior Industries International
SUP
| $81K | ﹤0.01% |
4,754
+3,980
| +514% | +$67.8K |
|
1091
Upland Software
UPLD
$71.4M
| $81K | ﹤0.01% |
2,534
-16,475
| -87% | -$527K |
|
|
EBSB
1092
DELISTED
Meridian Bancorp, Inc.
EBSB
| $81K | ﹤0.01% |
4,808
-3,431
| -42% | -$57.8K |
|
1093
AMN Healthcare
AMN
$703M
| $80K | ﹤0.01% |
+1,471
| New | +$80K |
|
1094
Cadiz
CDZI
$316M
| $80K | ﹤0.01% |
+7,242
| New | +$80K |
|
1095
Civeo
CVEO
$286M
| $80K | ﹤0.01% |
1,616
+1,224
| +312% | +$60.6K |
|
1096
Element Solutions
ESI
$6.37B
| $80K | ﹤0.01% |
6,426
-22,983
| -78% | -$286K |
|
1097
SPDR S&P Regional Banking ETF
KRE
$4.26B
| $80K | ﹤0.01% |
1,348
-41,250
| -97% | -$2.45M |
|
1098
Kura Oncology
KURA
$723M
| $80K | ﹤0.01% |
4,590
+3,260
| +245% | +$56.8K |
|
1099
Columbia Financial
CLBK
$1.61B
| $79K | ﹤0.01% |
4,738
-2,763
| -37% | -$46.1K |
|
1100
Diodes
DIOD
$2.45B
| $79K | ﹤0.01% |
+2,402
| New | +$79K |
|