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 | |
|---|---|---|---|---|---|---|
1176
RLJ Lodging Trust
RLJ
$1.14B
| $63K | ﹤0.01% |
+2,861
| New | +$63K |
|
1177
Teradata
TDC
$1.99B
| $63K | ﹤0.01% |
1,577
-4,379
| -74% | -$175K |
|
|
ABB
1178
DELISTED
ABB Ltd.
ABB
| $63K | ﹤0.01% |
2,899
-14,941
| -84% | -$325K |
|
1179
Airgain
AIRG
$49.6M
| $62K | ﹤0.01% |
6,765
+1,696
| +33% | +$15.5K |
|
1180
Aqua Metals
AQMS
$5.27M
| $62K | ﹤0.01% |
108
+53
| +96% | +$30.4K |
|
1181
Prosperity Bancshares
PB
$6.4B
| $62K | ﹤0.01% |
+916
| New | +$62K |
|
|
AVP
1182
DELISTED
Avon Products, Inc.
AVP
| $62K | ﹤0.01% |
38,867
+16,246
| +72% | +$25.9K |
|
1183
Forum Energy Technologies
FET
$325M
| $61K | ﹤0.01% |
+248
| New | +$61K |
|
|
ONC
1184
BeOne Medicines Ltd. American Depositary Shares
ONC
$34.5B
| $61K | ﹤0.01% |
401
-345
| -46% | -$52.5K |
|
|
LFIN
1185
DELISTED
LongFin Corp Class A Common Stock
LFIN
| $61K | ﹤0.01% |
7,063
+4,714
| +201% | +$40.7K |
|
1186
Ambac
AMBC
$415M
| $60K | ﹤0.01% |
3,052
-25,578
| -89% | -$503K |
|
1187
Emergent Biosolutions
EBS
$425M
| $60K | ﹤0.01% |
+1,206
| New | +$60K |
|
1188
Heartland Express
HTLD
$656M
| $60K | ﹤0.01% |
3,258
+2,325
| +249% | +$42.8K |
|
1189
Natural Resource Partners
NRP
$1.35B
| $60K | ﹤0.01% |
1,937
-2,934
| -60% | -$90.9K |
|
1190
Principal Financial Group
PFG
$17.8B
| $60K | ﹤0.01% |
1,152
-1,069
| -48% | -$55.7K |
|
1191
HealthEquity
HQY
$7.88B
| $59K | ﹤0.01% |
798
-2,905
| -78% | -$215K |
|
1192
PotlatchDeltic
PCH
$3.21B
| $59K | ﹤0.01% |
+1,171
| New | +$59K |
|
|
ATCO
1193
DELISTED
Atlas Corp.
ATCO
| $59K | ﹤0.01% |
+5,825
| New | +$59K |
|
|
ZNGA
1194
DELISTED
ZYNGA INC. CL A COMMON
ZNGA
| $59K | ﹤0.01% |
+14,724
| New | +$59K |
|
|
DATA
1195
DELISTED
Tableau Software, Inc.
DATA
| $59K | ﹤0.01% |
608
-10,419
| -94% | -$1.01M |
|
|
JMBA
1196
DELISTED
Jamba, Inc.
JMBA
| $59K | ﹤0.01% |
+5,605
| New | +$59K |
|
|
AMRN
1197
Amarin Corp
AMRN
$310M
| $58K | ﹤0.01% |
944
-2,416
| -72% | -$148K |
|
1198
Alliance Resource Partners
ARLP
$2.92B
| $58K | ﹤0.01% |
+3,172
| New | +$58K |
|
1199
Nordic American Tanker
NAT
$675M
| $58K | ﹤0.01% |
21,780
-16,509
| -43% | -$44K |
|
1200
Ormat Technologies
ORA
$5.51B
| $58K | ﹤0.01% |
+1,095
| New | +$58K |
|