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 |
Tesla
TSLA
|
+$27.1M |
| 2 |
Netflix
NFLX
|
+$24.7M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$20.1M |
| 4 |
TWX
Time Warner Inc
TWX
|
+$18.3M |
| 5 |
Alibaba
BABA
|
+$14.8M |
Top Sells
| 1 |
Amazon
AMZN
|
+$71.9M |
| 2 |
Micron Technology
MU
|
+$47.7M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$26.3M |
| 4 |
Boeing
BA
|
+$21M |
| 5 |
Citigroup
C
|
+$19.6M |
Sector Composition
| 1 | Consumer Discretionary | 15.64% |
| 2 | Communication Services | 14.16% |
| 3 | Technology | 12.46% |
| 4 | Financials | 10.94% |
| 5 | Healthcare | 10.33% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1226
Odyssey Marine Exploration
OMEX
$80.9M
| $37K | ﹤0.01% |
4,555
-11,505
| -72% | -$93.5K |
|
1227
Opko Health
OPK
$1.11B
| $37K | ﹤0.01% |
+11,928
| New | +$37K |
|
|
PDS
1228
Precision Drilling
PDS
$765M
| $37K | ﹤0.01% |
678
-155
| -19% | -$8.46K |
|
1229
Unisys
UIS
$282M
| $37K | ﹤0.01% |
3,519
-15,744
| -82% | -$166K |
|
|
SSI
1230
DELISTED
Stage Stores Inc
SSI
| $37K | ﹤0.01% |
17,031
+7,767
| +84% | +$16.9K |
|
1231
Carisma Therapeutics
CARM
$15.6M
| $36K | ﹤0.01% |
+1,721
| New | +$36K |
|
1232
Hudson Technologies
HDSN
$444M
| $36K | ﹤0.01% |
+7,456
| New | +$36K |
|
1233
Infosys
INFY
$70.3B
| $36K | ﹤0.01% |
4,116
-99,892
| -96% | -$874K |
|
1234
Keysight
KEYS
$29.3B
| $36K | ﹤0.01% |
705
-20
| -3% | -$1.02K |
|
|
NGD
1235
New Gold Inc
NGD
$5.16B
| $36K | ﹤0.01% |
14,020
-5,540
| -28% | -$14.2K |
|
1236
SouthState Bank Corporation
SSB
$10.2B
| $36K | ﹤0.01% |
+425
| New | +$36K |
|
|
BFX
1237
DELISTED
BowFlex Inc.
BFX
| $36K | ﹤0.01% |
2,698
+2,503
| +1,284% | +$33.4K |
|
|
NE
1238
DELISTED
Noble Corporation
NE
| $36K | ﹤0.01% |
+9,879
| New | +$36K |
|
|
CRR
1239
DELISTED
Carbo Ceramics Inc.
CRR
| $36K | ﹤0.01% |
+5,046
| New | +$36K |
|
|
LQ
1240
DELISTED
La Quinta Holdings Inc.
LQ
| $36K | ﹤0.01% |
1,947
-23,526
| -92% | -$435K |
|
|
AST
1241
DELISTED
Asterias Biotherapeutics Inc. Series A
AST
| $36K | ﹤0.01% |
25,038
+3,142
| +14% | +$4.52K |
|
1242
Arbutus Biopharma
ABUS
$855M
| $35K | ﹤0.01% |
7,031
+4,238
| +152% | +$21.1K |
|
1243
Collegium Pharmaceutical
COLL
$1.18B
| $35K | ﹤0.01% |
1,397
-2,215
| -61% | -$55.5K |
|
1244
Entergy
ETR
$40.3B
| $35K | ﹤0.01% |
+900
| New | +$35K |
|
1245
Fidelity National Financial
FNF
$16.4B
| $35K | ﹤0.01% |
933
-6,533
| -88% | -$245K |
|
|
GOOD
1246
Gladstone Commercial Corp
GOOD
$608M
| $35K | ﹤0.01% |
+2,062
| New | +$35K |
|
1247
iShares Europe ETF
IEV
$2.34B
| $35K | ﹤0.01% |
+769
| New | +$35K |
|
1248
Pentair
PNR
$18.2B
| $35K | ﹤0.01% |
+773
| New | +$35K |
|
1249
Primoris Services
PRIM
$6.59B
| $35K | ﹤0.01% |
+1,403
| New | +$35K |
|
1250
ProShares Ultra Health Care
RXL
$66.6M
| $35K | ﹤0.01% |
+1,664
| New | +$35K |
|