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 | |
|---|---|---|---|---|---|---|
|
SEI
1351
Solaris Energy Infrastructure, Inc.
SEI
$1.39B
| $145K | ﹤0.01% |
22,226
+10,814
| +95% | +$70.5K |
|
|
TACO
1352
DELISTED
Del Taco Restaurants, Inc. Common Stock
TACO
| $145K | ﹤0.01% |
11,660
-2,116
| -15% | -$26.3K |
|
1353
Mesa Air Group
MESA
$57.4M
| $144K | ﹤0.01% |
25,796
+17,248
| +202% | +$96.3K |
|
|
1354
Advanced Micro Devices
AMD
$257B
| $143K | ﹤0.01% |
1,000
-214,308
| -100% | -$30.6M |
|
1355
Methode Electronics
MEI
$287M
| $143K | ﹤0.01% |
2,910
+1,094
| +60% | +$53.8K |
|
1356
Sensata Technologies
ST
$4.55B
| $143K | ﹤0.01% |
2,322
-847
| -27% | -$52.2K |
|
1357
American Resources Corp
AREC
$172M
| $142K | ﹤0.01% |
79,108
-25,262
| -24% | -$45.3K |
|
1358
Brinker International
EAT
$6.84B
| $142K | ﹤0.01% |
3,889
-5,079
| -57% | -$185K |
|
|
CBIO
1359
Crescent Biopharma, Inc. Common Stock
CBIO
$174M
| $142K | ﹤0.01% |
+993
| New | +$142K |
|
1360
loanDepot
LDI
$894M
| $142K | ﹤0.01% |
+29,655
| New | +$142K |
|
|
AKTS
1361
DELISTED
AKOUSTIS TECHNOLOGIES, INC.
AKTS
| $142K | ﹤0.01% |
21,359
-10,073
| -32% | -$67K |
|
1362
SPDR Dow Jones REIT ETF
RWR
$1.88B
| $141K | ﹤0.01% |
+1,159
| New | +$141K |
|
1363
Agios Pharmaceuticals
AGIO
$2.14B
| $140K | ﹤0.01% |
4,260
-1,455
| -25% | -$47.8K |
|
|
TCS
1364
DELISTED
THE CONTAINER STORE GROUP, INC.
TCS
| $140K | ﹤0.01% |
939
-1,245
| -57% | -$186K |
|
1365
Carnival PLC
CUK
$37.7B
| $139K | ﹤0.01% |
7,562
+4,820
| +176% | +$88.6K |
|
1366
Viking Therapeutics
VKTX
$2.79B
| $139K | ﹤0.01% |
+30,400
| New | +$139K |
|
1367
Brookfield Infrastructure
BIPC
$4.76B
| $138K | ﹤0.01% |
+3,044
| New | +$138K |
|
1368
Co-Diagnostics
CODX
$13.1M
| $138K | ﹤0.01% |
15,511
-17,733
| -53% | -$158K |
|
1369
Sinclair Inc
SBGI
$972M
| $138K | ﹤0.01% |
5,224
+2,373
| +83% | +$62.7K |
|
1370
TechTarget
TTGT
$427M
| $138K | ﹤0.01% |
+1,453
| New | +$138K |
|
1371
Travere Therapeutics
TVTX
$2.09B
| $138K | ﹤0.01% |
4,472
-10,799
| -71% | -$333K |
|
1372
BRF SA
BRFS
$6.22B
| $137K | ﹤0.01% |
33,663
-14,980
| -31% | -$61K |
|
1373
DNOW Inc
DNOW
$1.6B
| $137K | ﹤0.01% |
16,079
-38,205
| -70% | -$326K |
|
1374
Haemonetics
HAE
$2.51B
| $137K | ﹤0.01% |
+2,599
| New | +$137K |
|
1375
Independence Realty Trust
IRT
$4.07B
| $137K | ﹤0.01% |
5,326
-2,536
| -32% | -$65.2K |
|