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 |
NVIDIA
NVDA
|
+$29.3M |
| 2 |
Industrial Select Sector SPDR Fund
XLI
|
+$23.1M |
| 3 |
iShares Russell 2000 ETF
IWM
|
+$18M |
| 4 |
Netflix
NFLX
|
+$17.4M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14M |
Top Sells
| 1 |
Invesco QQQ Trust
QQQ
|
+$120M |
| 2 |
SPDR S&P 500 ETF Trust
SPY
|
+$41.3M |
| 3 |
Walt Disney
DIS
|
+$26.9M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$13.8M |
| 5 |
Johnson & Johnson
JNJ
|
+$11.3M |
Sector Composition
| 1 | Technology | 16.22% |
| 2 | Communication Services | 16.19% |
| 3 | Healthcare | 11.36% |
| 4 | Industrials | 9.74% |
| 5 | Consumer Discretionary | 8.61% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1101
Mine Safety
MSA
$6.63B
| $42K | ﹤0.01% |
402
+51
| +15% | +$5.33K |
|
1102
Portland General Electric
POR
$4.66B
| $42K | ﹤0.01% |
+781
| New | +$42K |
|
|
NETI
1103
DELISTED
Eneti Inc.
NETI
| $42K | ﹤0.01% |
997
+939
| +1,619% | +$39.6K |
|
|
VSLR
1104
DELISTED
VIVINT SOLAR, INC.
VSLR
| $42K | ﹤0.01% |
5,866
+1,651
| +39% | +$11.8K |
|
1105
CareDx
CDNA
$720M
| $41K | ﹤0.01% |
+1,151
| New | +$41K |
|
1106
Cerus
CERS
$236M
| $41K | ﹤0.01% |
+7,353
| New | +$41K |
|
1107
Forte Biosciences
FBRX
$131M
| $41K | ﹤0.01% |
17
-29
| -63% | -$69.9K |
|
1108
KRONOS Worldwide
KRO
$694M
| $41K | ﹤0.01% |
2,692
-895
| -25% | -$13.6K |
|
1109
Magnite
MGNI
$3.4B
| $41K | ﹤0.01% |
6,525
+5,378
| +469% | +$33.8K |
|
1110
Martin Midstream Partners
MMLP
$119M
| $41K | ﹤0.01% |
5,771
+3,564
| +161% | +$25.3K |
|
1111
Invesco Golden Dragon China ETF
PGJ
$157M
| $41K | ﹤0.01% |
1,111
-3,648
| -77% | -$135K |
|
|
FBM
1112
DELISTED
Foundation Building Materials, Inc. Common Stock
FBM
| $41K | ﹤0.01% |
+2,343
| New | +$41K |
|
|
BPL
1113
DELISTED
Buckeye Partners, L.P.
BPL
| $41K | ﹤0.01% |
+1,000
| New | +$41K |
|
|
HIVE
1114
DELISTED
AEROHIVE NETWORKS, INC.
HIVE
| $41K | ﹤0.01% |
+9,303
| New | +$41K |
|
1115
EyePoint Pharmaceuticals
EYPT
$920M
| $40K | ﹤0.01% |
+2,496
| New | +$40K |
|
|
LAND
1116
Gladstone Land Corp
LAND
$321M
| $40K | ﹤0.01% |
3,538
+3,037
| +606% | +$34.3K |
|
1117
Invesco DB US Dollar Index Bearish Fund
UDN
$147M
| $40K | ﹤0.01% |
+1,929
| New | +$40K |
|
1118
Zscaler
ZS
$44.8B
| $40K | ﹤0.01% |
531
-12,851
| -96% | -$968K |
|
1119
AudioCodes
AUDC
$289M
| $39K | ﹤0.01% |
2,556
+2,103
| +464% | +$32.1K |
|
1120
Brookfield
BN
$101B
| $39K | ﹤0.01% |
+1,542
| New | +$39K |
|
1121
Ryman Hospitality Properties
RHP
$6.31B
| $39K | ﹤0.01% |
487
-478
| -50% | -$38.3K |
|
1122
Shake Shack
SHAK
$4.06B
| $39K | ﹤0.01% |
+546
| New | +$39K |
|
1123
Trustmark
TRMK
$2.43B
| $39K | ﹤0.01% |
+1,191
| New | +$39K |
|
1124
Avanos Medical
AVNS
$567M
| $38K | ﹤0.01% |
+882
| New | +$38K |
|
1125
Warrior Met Coal
HCC
$3.04B
| $38K | ﹤0.01% |
+1,462
| New | +$38K |
|