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 | |
|---|---|---|---|---|---|---|
|
GLOP
1376
DELISTED
GASLOG PARTNERS LP
GLOP
| $137K | ﹤0.01% |
32,228
-8,291
| -20% | -$35.2K |
|
1377
Great Lakes Dredge & Dock
GLDD
$821M
| $136K | ﹤0.01% |
8,680
+787
| +10% | +$12.3K |
|
1378
Grifois
GRFS
$6.72B
| $136K | ﹤0.01% |
12,196
+7,427
| +156% | +$82.8K |
|
|
LOMA
1379
Loma Negra
LOMA
$888M
| $136K | ﹤0.01% |
20,453
+11,285
| +123% | +$75K |
|
1380
Radian Group
RDN
$4.76B
| $136K | ﹤0.01% |
+6,439
| New | +$136K |
|
|
AY
1381
DELISTED
Atlantica Sustainable Infrastructure plc Ordinary Shares
AY
| $136K | ﹤0.01% |
3,815
+1,315
| +53% | +$46.9K |
|
1382
AES
AES
$9.17B
| $134K | ﹤0.01% |
5,517
-9,071
| -62% | -$220K |
|
1383
ARK Genomic Revolution ETF
ARKG
$1.04B
| $134K | ﹤0.01% |
+2,200
| New | +$134K |
|
|
FPI
1384
Farmland Partners
FPI
$481M
| $134K | ﹤0.01% |
11,226
+9,636
| +606% | +$115K |
|
1385
JELD-WEN Holding
JELD
$537M
| $134K | ﹤0.01% |
+5,101
| New | +$134K |
|
1386
Cushman & Wakefield
CWK
$3.85B
| $133K | ﹤0.01% |
6,024
-4,741
| -44% | -$105K |
|
1387
Driven Brands
DRVN
$3B
| $133K | ﹤0.01% |
3,984
+2,914
| +272% | +$97.3K |
|
1388
Macerich
MAC
$4.58B
| $133K | ﹤0.01% |
7,747
+6,669
| +619% | +$114K |
|
|
UBX
1389
DELISTED
Unity Biotechnology
UBX
| $133K | ﹤0.01% |
+9,135
| New | +$133K |
|
1390
Astrana Health
ASTH
$1.38B
| $133K | ﹤0.01% |
+1,822
| New | +$133K |
|
1391
GrafTech
EAF
$261M
| $132K | ﹤0.01% |
1,117
-6,715
| -86% | -$794K |
|
1392
Vertical Aerospace
EVTL
$523M
| $132K | ﹤0.01% |
+1,971
| New | +$132K |
|
1393
NovaGold Resources
NG
$2.82B
| $132K | ﹤0.01% |
19,366
-35,721
| -65% | -$243K |
|
1394
Nu Skin
NUS
$596M
| $132K | ﹤0.01% |
+2,613
| New | +$132K |
|
1395
Ardmore Shipping
ASC
$505M
| $131K | ﹤0.01% |
38,882
+32,196
| +482% | +$108K |
|
1396
Eastern Bankshares
EBC
$3.46B
| $131K | ﹤0.01% |
+6,528
| New | +$131K |
|
1397
Medallion Financial
MFIN
$244M
| $131K | ﹤0.01% |
22,636
+18,251
| +416% | +$106K |
|
1398
Myriad Genetics
MYGN
$674M
| $131K | ﹤0.01% |
4,782
+2,305
| +93% | +$63.1K |
|
1399
Qualys
QLYS
$4.82B
| $131K | ﹤0.01% |
+956
| New | +$131K |
|
|
ARCE
1400
DELISTED
Arco Platform Limited Class A Common Shares
ARCE
| $131K | ﹤0.01% |
+6,294
| New | +$131K |
|