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 |
Invesco QQQ Trust
QQQ
|
+$92M |
| 2 |
Walt Disney
DIS
|
+$25.4M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$12.8M |
| 4 |
Baidu
BIDU
|
+$12.2M |
| 5 |
RHT
Red Hat Inc
RHT
|
+$11.6M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
+$61.4M |
| 2 |
Amazon
AMZN
|
+$59.6M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$35.5M |
| 4 |
Apple
AAPL
|
+$19.6M |
| 5 |
Financial Select Sector SPDR Fund
XLF
|
+$18.2M |
Sector Composition
| 1 | Communication Services | 16.98% |
| 2 | Technology | 12.42% |
| 3 | Healthcare | 10.02% |
| 4 | Consumer Discretionary | 8.53% |
| 5 | Industrials | 6.01% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1076
PetMed Express
PETS
$56.4M
| $55K | ﹤0.01% |
+2,458
| New | +$55K |
|
1077
Coherus Oncology, Inc. Common Stock
CHRS
$152M
| $54K | ﹤0.01% |
3,963
-164
| -4% | -$2.24K |
|
1078
Steelcase
SCS
$1.92B
| $54K | ﹤0.01% |
3,726
+1,471
| +65% | +$21.3K |
|
1079
Trinseo
TSE
$81.6M
| $54K | ﹤0.01% |
+1,199
| New | +$54K |
|
|
CAF
1080
Morgan Stanley China A Share Fund
CAF
$262M
| $53K | ﹤0.01% |
2,287
+2,187
| +2,187% | +$50.7K |
|
1081
Chefs' Warehouse
CHEF
$2.63B
| $53K | ﹤0.01% |
1,721
+1,339
| +351% | +$41.2K |
|
1082
Huron Consulting
HURN
$2.36B
| $53K | ﹤0.01% |
1,138
+942
| +481% | +$43.9K |
|
1083
MannKind Corp
MNKD
$1.71B
| $53K | ﹤0.01% |
27,236
-7,957
| -23% | -$15.5K |
|
|
PNNT
1084
Pennant Park Investment Corp
PNNT
$469M
| $53K | ﹤0.01% |
7,794
+7,550
| +3,094% | +$51.3K |
|
1085
Suburban Propane Partners
SPH
$1.2B
| $53K | ﹤0.01% |
2,409
-6,710
| -74% | -$148K |
|
1086
Teucrium Wheat Fund
WEAT
$116M
| $53K | ﹤0.01% |
10,147
-16,301
| -62% | -$85.1K |
|
|
EMCI
1087
DELISTED
EMC INS Group Inc
EMCI
| $53K | ﹤0.01% |
1,683
+217
| +15% | +$6.83K |
|
|
SPPI
1088
DELISTED
Spectrum Pharmaceuticals Inc
SPPI
| $52K | ﹤0.01% |
4,918
+3,218
| +189% | +$34K |
|
1089
BRF SA
BRFS
$5.99B
| $51K | ﹤0.01% |
8,808
-11,920
| -58% | -$69K |
|
1090
CryoPort
CYRX
$480M
| $51K | ﹤0.01% |
3,997
+311
| +8% | +$3.97K |
|
1091
Fidelity MSCI Materials Index ETF
FMAT
$437M
| $51K | ﹤0.01% |
1,631
+1,168
| +252% | +$36.5K |
|
1092
KeyCorp
KEY
$21.1B
| $51K | ﹤0.01% |
+3,244
| New | +$51K |
|
1093
Sonos
SONO
$1.77B
| $51K | ﹤0.01% |
+5,024
| New | +$51K |
|
1094
Century Aluminum
CENX
$2.09B
| $50K | ﹤0.01% |
5,673
-26,744
| -82% | -$236K |
|
1095
Carter's
CRI
$1.04B
| $50K | ﹤0.01% |
+497
| New | +$50K |
|
1096
KRONOS Worldwide
KRO
$721M
| $50K | ﹤0.01% |
+3,587
| New | +$50K |
|
1097
Webster Financial
WBS
$10.2B
| $50K | ﹤0.01% |
+1,001
| New | +$50K |
|
|
NE
1098
DELISTED
Noble Corporation
NE
| $50K | ﹤0.01% |
17,753
+8,144
| +85% | +$22.9K |
|
|
TOO
1099
DELISTED
Teekay Offshore Partners L.P.
TOO
| $50K | ﹤0.01% |
41,675
-15,504
| -27% | -$18.6K |
|
1100
Dynagas LNG Partners
DLNG
$139M
| $49K | ﹤0.01% |
22,138
+17,197
| +348% | +$38.1K |
|