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 |
LNKD
LinkedIn Corporation
LNKD
|
+$29.3M |
| 2 |
SPDR Gold Trust
GLD
|
+$18.1M |
| 3 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$14.9M |
| 4 |
Biogen
BIIB
|
+$13.7M |
| 5 |
Visa
V
|
+$13.3M |
Top Sells
| 1 |
Broadcom
AVGO
|
+$37.4M |
| 2 |
Alphabet (Google) Class C
GOOG
|
+$20.1M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$15.8M |
| 4 |
Citigroup
C
|
+$13.9M |
| 5 |
SPDR S&P MidCap 400 ETF Trust
MDY
|
+$12.9M |
Sector Composition
| 1 | Communication Services | 12.51% |
| 2 | Healthcare | 12.38% |
| 3 | Technology | 12.22% |
| 4 | Consumer Discretionary | 8.59% |
| 5 | Financials | 8.53% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1126
Winnebago Industries
WGO
$964M
| $21K | ﹤0.01% |
+930
| New | +$21K |
|
|
ATSG
1127
DELISTED
Air Transport Services Group, Inc.
ATSG
| $21K | ﹤0.01% |
1,673
+484
| +41% | +$6.08K |
|
|
B
1128
DELISTED
Barnes Group Inc.
B
| $21K | ﹤0.01% |
+653
| New | +$21K |
|
|
MSGN
1129
DELISTED
MSG Networks Inc.
MSGN
| $21K | ﹤0.01% |
+1,403
| New | +$21K |
|
|
RXII
1130
DELISTED
GALENA BIOPHARMA INC COM
RXII
| $21K | ﹤0.01% |
45,271
+38,369
| +556% | +$17.8K |
|
|
NIHD
1131
DELISTED
NII Holdings, Inc. Common Stock
NIHD
| $21K | ﹤0.01% |
6,683
+4,648
| +228% | +$14.6K |
|
1132
Benchmark Electronics
BHE
$1.41B
| $20K | ﹤0.01% |
967
+608
| +169% | +$12.6K |
|
1133
CNO Financial Group
CNO
$3.81B
| $20K | ﹤0.01% |
+1,179
| New | +$20K |
|
1134
Heritage Commerce
HTBK
$624M
| $20K | ﹤0.01% |
+1,959
| New | +$20K |
|
1135
Independent Bank Corp
IBCP
$659M
| $20K | ﹤0.01% |
1,381
-6
| -0.4% | -$87 |
|
1136
Kratos Defense & Security Solutions
KTOS
$11.5B
| $20K | ﹤0.01% |
+4,956
| New | +$20K |
|
1137
Ryanair
RYAAY
$31.1B
| $20K | ﹤0.01% |
+720
| New | +$20K |
|
1138
Tennant Co
TNC
$1.51B
| $20K | ﹤0.01% |
387
+49
| +14% | +$2.53K |
|
1139
Zumiez
ZUMZ
$348M
| $20K | ﹤0.01% |
1,437
-1,191
| -45% | -$16.6K |
|
|
CONN
1140
DELISTED
Conn's Inc.
CONN
| $20K | ﹤0.01% |
2,786
-1,578
| -36% | -$11.3K |
|
|
SHLM
1141
DELISTED
Schulman (A.) Inc
SHLM
| $20K | ﹤0.01% |
830
+205
| +33% | +$4.94K |
|
|
SNBC
1142
DELISTED
Sun Bancorp Inc
SNBC
| $20K | ﹤0.01% |
+990
| New | +$20K |
|
1143
Calix
CALX
$4.04B
| $19K | ﹤0.01% |
2,798
+2,694
| +2,590% | +$18.3K |
|
1144
ClearSign Technologies
CLIR
$29.2M
| $19K | ﹤0.01% |
+3,831
| New | +$19K |
|
1145
KKR & Co
KKR
$128B
| $19K | ﹤0.01% |
1,576
-31,561
| -95% | -$380K |
|
1146
Live Nation Entertainment
LYV
$40.4B
| $19K | ﹤0.01% |
+850
| New | +$19K |
|
1147
M/I Homes
MHO
$4.1B
| $19K | ﹤0.01% |
+1,049
| New | +$19K |
|
1148
PhenixFIN
PFX
| $19K | ﹤0.01% |
142
+102
| +255% | +$13.6K |
|
1149
Turkcell
TKC
$4.79B
| $19K | ﹤0.01% |
+2,151
| New | +$19K |
|
|
HYLD
1150
DELISTED
High Yield ETF
HYLD
| $19K | ﹤0.01% |
569
-1,079
| -65% | -$36K |
|