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
|
+$44.9M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$31.7M |
| 3 |
TWX
Time Warner Inc
TWX
|
+$26.1M |
| 4 |
Booking.com
BKNG
|
+$21.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$18.2M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$42.8M |
| 2 |
Amgen
AMGN
|
+$32.3M |
| 3 |
Baidu
BIDU
|
+$21.9M |
| 4 |
Micron Technology
MU
|
+$21.2M |
| 5 |
Alphabet (Google) Class A
GOOGL
|
+$17.7M |
Sector Composition
| 1 | Consumer Discretionary | 21.41% |
| 2 | Technology | 19.71% |
| 3 | Communication Services | 17.68% |
| 4 | Healthcare | 6.08% |
| 5 | Financials | 5.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1101
Ironwood Pharmaceuticals
IRWD
$201M
| $42K | ﹤0.01% |
3,182
-6,203
| -66% | -$81.9K |
|
1102
iShares US Energy ETF
IYE
$1.16B
| $42K | ﹤0.01% |
1,139
+1,089
| +2,178% | +$40.2K |
|
1103
LivePerson
LPSN
$92.5M
| $42K | ﹤0.01% |
3,122
-5,261
| -63% | -$70.8K |
|
1104
SL Green Realty
SLG
$4.5B
| $42K | ﹤0.01% |
+434
| New | +$42K |
|
|
AIOT
1105
PowerFleet, Inc. Common Stock
AIOT
$701M
| $42K | ﹤0.01% |
5,683
+4,947
| +672% | +$36.6K |
|
|
NPKI
1106
NPK International Inc.
NPKI
$900M
| $42K | ﹤0.01% |
4,298
+4,086
| +1,927% | +$39.9K |
|
|
TLRD
1107
DELISTED
Tailored Brands, Inc.
TLRD
| $42K | ﹤0.01% |
2,976
-7,776
| -72% | -$110K |
|
|
TEP
1108
DELISTED
Tallgrass Energy Partners, LP
TEP
| $42K | ﹤0.01% |
897
-3,375
| -79% | -$158K |
|
1109
Geron
GERN
$829M
| $41K | ﹤0.01% |
19,168
+540
| +3% | +$1.16K |
|
|
MITT
1110
AG Mortgage Investment Trust
MITT
$246M
| $41K | ﹤0.01% |
+723
| New | +$41K |
|
|
TSG
1111
DELISTED
The Stars Group Inc.
TSG
| $41K | ﹤0.01% |
2,045
+1,127
| +123% | +$22.6K |
|
|
EMES
1112
DELISTED
Emerge Energy Services LP
EMES
| $41K | ﹤0.01% |
5,009
-28,485
| -85% | -$233K |
|
|
FLY
1113
DELISTED
Fly Leasing Limited
FLY
| $41K | ﹤0.01% |
2,943
-2,670
| -48% | -$37.2K |
|
1114
InfraCap MLP ETF
AMZA
$405M
| $40K | ﹤0.01% |
+433
| New | +$40K |
|
1115
Adtalem Global Education
ATGE
$4.98B
| $40K | ﹤0.01% |
+1,136
| New | +$40K |
|
1116
iShares MSCI BIC ETF
BKF
$94.1M
| $40K | ﹤0.01% |
949
-2,275
| -71% | -$95.9K |
|
1117
Hudbay
HBM
$5.37B
| $40K | ﹤0.01% |
5,441
-14,039
| -72% | -$103K |
|
1118
Monro
MNRO
$537M
| $40K | ﹤0.01% |
724
+325
| +81% | +$18K |
|
1119
Petrobras Class A
PBR.A
$75.1B
| $40K | ﹤0.01% |
+4,167
| New | +$40K |
|
1120
Theravance Biopharma
TBPH
$687M
| $40K | ﹤0.01% |
1,177
-2,361
| -67% | -$80.2K |
|
1121
Texas Roadhouse
TXRH
$11.1B
| $40K | ﹤0.01% |
+832
| New | +$40K |
|
|
NEWR
1122
DELISTED
New Relic, Inc.
NEWR
| $40K | ﹤0.01% |
+815
| New | +$40K |
|
|
GLBL
1123
DELISTED
TerraForm Global, Inc. Class A Common Stock
GLBL
| $40K | ﹤0.01% |
8,514
-15,401
| -64% | -$72.4K |
|
|
FGL
1124
DELISTED
Fidelity & Guaranty Life
FGL
| $40K | ﹤0.01% |
1,290
+1,091
| +548% | +$33.8K |
|
1125
ASGN Inc
ASGN
$2.32B
| $39K | ﹤0.01% |
+737
| New | +$39K |
|