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 |
Financial Select Sector SPDR Fund
XLF
|
+$42.3M |
| 2 |
Shopify
SHOP
|
+$37.4M |
| 3 |
Verizon
VZ
|
+$34M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Merck
MRK
|
+$28M |
Top Sells
| 1 |
AMC Entertainment Holdings
AMC
|
+$38.3M |
| 2 |
Carnival Corp
CCL
|
+$37.6M |
| 3 |
GE Aerospace
GE
|
+$33M |
| 4 |
Advanced Micro Devices
AMD
|
+$30.6M |
| 5 |
Micron Technology
MU
|
+$28.3M |
Sector Composition
| 1 | Technology | 20.53% |
| 2 | Consumer Discretionary | 13.81% |
| 3 | Healthcare | 11.39% |
| 4 | Communication Services | 7.32% |
| 5 | Industrials | 6.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
KLR
1226
DELISTED
Kaleyra, Inc.
KLR
| $189K | ﹤0.01% |
+5,405
| New | +$189K |
|
1227
Vanguard Utilities ETF
VPU
$7.37B
| $188K | ﹤0.01% |
+1,206
| New | +$188K |
|
1228
Fulgent Genetics
FLGT
$670M
| $187K | ﹤0.01% |
1,865
+290
| +18% | +$29.1K |
|
1229
GeoPark
GPRK
$325M
| $187K | ﹤0.01% |
+16,370
| New | +$187K |
|
1230
Valaris
VAL
$3.71B
| $187K | ﹤0.01% |
5,201
-24,373
| -82% | -$876K |
|
1231
SkyWater Technology
SKYT
$509M
| $186K | ﹤0.01% |
+11,497
| New | +$186K |
|
1232
Aterian
ATER
$9.73M
| $185K | ﹤0.01% |
+3,763
| New | +$185K |
|
1233
BlackSky Technology
BKSY
$684M
| $185K | ﹤0.01% |
+5,174
| New | +$185K |
|
1234
Edgewell Personal Care
EPC
$1.01B
| $185K | ﹤0.01% |
4,056
+333
| +9% | +$15.2K |
|
1235
Lexicon Pharmaceuticals
LXRX
$418M
| $185K | ﹤0.01% |
47,145
-12,129
| -20% | -$47.6K |
|
1236
Invesco NASDAQ 100 ETF
QQQM
$60.6B
| $185K | ﹤0.01% |
1,136
+842
| +286% | +$137K |
|
1237
Brookdale Senior Living
BKD
$1.78B
| $184K | ﹤0.01% |
35,785
+15,043
| +73% | +$77.3K |
|
1238
Lakeland Industries
LAKE
$139M
| $184K | ﹤0.01% |
8,518
-12,840
| -60% | -$277K |
|
1239
NNN REIT
NNN
$8.12B
| $184K | ﹤0.01% |
3,831
-28,392
| -88% | -$1.36M |
|
1240
Cross Country Healthcare
CCRN
$411M
| $183K | ﹤0.01% |
+6,614
| New | +$183K |
|
1241
Deckers Outdoor
DECK
$17.6B
| $182K | ﹤0.01% |
+2,988
| New | +$182K |
|
1242
Enanta Pharmaceuticals
ENTA
$177M
| $181K | ﹤0.01% |
+2,428
| New | +$181K |
|
1243
Gossamer Bio
GOSS
$787M
| $181K | ﹤0.01% |
+16,029
| New | +$181K |
|
|
ECOM
1244
DELISTED
CHANNELADVISOR CORPORATION
ECOM
| $181K | ﹤0.01% |
7,367
+3,023
| +70% | +$74.3K |
|
|
QIWI
1245
DELISTED
QIWI PLC
QIWI
| $181K | ﹤0.01% |
22,757
+7,212
| +46% | +$57.4K |
|
1246
Clearway Energy Class C
CWEN
$3.39B
| $180K | ﹤0.01% |
+5,010
| New | +$180K |
|
1247
Huntington Bancshares
HBAN
$25.9B
| $180K | ﹤0.01% |
11,687
-13,766
| -54% | -$212K |
|
1248
NeoGenomics
NEO
$1.03B
| $180K | ﹤0.01% |
5,278
+2,742
| +108% | +$93.5K |
|
1249
Liberty Energy
LBRT
$1.73B
| $179K | ﹤0.01% |
18,556
+9,880
| +114% | +$95.3K |
|
1250
SPDR Portfolio S&P 500 ETF
SPLG
$85.8B
| $178K | ﹤0.01% |
+3,204
| New | +$178K |
|