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 | |
|---|---|---|---|---|---|---|
|
VWE
1251
DELISTED
Vintage Wine Estates, Inc. Common Stock
VWE
| $178K | ﹤0.01% |
15,111
-15,108
| -50% | -$178K |
|
1252
Cal-Maine
CALM
$5.37B
| $177K | ﹤0.01% |
+4,791
| New | +$177K |
|
|
DOYU
1253
DouYu International Holdings
DOYU
$231M
| $177K | ﹤0.01% |
6,723
-1,300
| -16% | -$34.2K |
|
|
NXDR
1254
Nextdoor Holdings
NXDR
$805M
| $177K | ﹤0.01% |
+22,485
| New | +$177K |
|
|
MREO
1255
Mereo BioPharma
MREO
$294M
| $177K | ﹤0.01% |
111,083
+99,670
| +873% | +$159K |
|
|
EGIO
1256
DELISTED
Edgio, Inc. Common Stock
EGIO
| $177K | ﹤0.01% |
1,295
+925
| +250% | +$126K |
|
|
LFC
1257
DELISTED
China Life Insurance Company Ltd.
LFC
| $177K | ﹤0.01% |
+21,550
| New | +$177K |
|
1258
ASGN Inc
ASGN
$2.25B
| $176K | ﹤0.01% |
+1,430
| New | +$176K |
|
1259
National CineMedia
NCMI
$456M
| $176K | ﹤0.01% |
6,268
+4,341
| +225% | +$122K |
|
|
IMMP
1260
Immutep
IMMP
$241M
| $175K | ﹤0.01% |
53,410
+51,236
| +2,357% | +$168K |
|
1261
ProShares UltraShort Financials
SKF
$9.98M
| $175K | ﹤0.01% |
2,648
+212
| +9% | +$14K |
|
1262
PDF Solutions
PDFS
$765M
| $174K | ﹤0.01% |
5,503
+5,129
| +1,371% | +$162K |
|
1263
Spire Global
SPIR
$307M
| $174K | ﹤0.01% |
+6,471
| New | +$174K |
|
1264
CubeSmart
CUBE
$9.39B
| $173K | ﹤0.01% |
3,046
-6,678
| -69% | -$379K |
|
|
STKL
1265
SunOpta
STKL
$739M
| $173K | ﹤0.01% |
+25,031
| New | +$173K |
|
1266
TFI International
TFII
$7.77B
| $173K | ﹤0.01% |
+1,546
| New | +$173K |
|
|
SWIR
1267
DELISTED
Sierra Wireless
SWIR
| $173K | ﹤0.01% |
9,827
-5,749
| -37% | -$101K |
|
1268
Gannett
GCI
$620M
| $172K | ﹤0.01% |
+32,357
| New | +$172K |
|
1269
SPDR S&P Retail ETF
XRT
$436M
| $171K | ﹤0.01% |
+1,900
| New | +$171K |
|
|
STL
1270
DELISTED
Sterling Bancorp
STL
| $170K | ﹤0.01% |
6,626
+510
| +8% | +$13.1K |
|
1271
iShares Cybersecurity and Tech ETF
IHAK
$938M
| $169K | ﹤0.01% |
3,791
+2,214
| +140% | +$98.7K |
|
|
VNET
1272
VNET Group
VNET
$2.57B
| $169K | ﹤0.01% |
18,803
+3,289
| +21% | +$29.6K |
|
1273
Brookfield Infrastructure Partners
BIP
$14.2B
| $168K | ﹤0.01% |
+4,169
| New | +$168K |
|
1274
InterDigital
IDCC
$8.33B
| $168K | ﹤0.01% |
2,348
-319
| -12% | -$22.8K |
|
1275
ProShares Short S&P500
SH
$1.22B
| $168K | ﹤0.01% |
3,088
-2,280
| -42% | -$124K |
|