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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$29.6M |
| 3 |
JPMorgan Chase
JPM
|
+$21.9M |
| 4 |
Boeing
BA
|
+$18.8M |
| 5 |
Target
TGT
|
+$13.5M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
+$94.2M |
| 2 |
Tesla
TSLA
|
+$91.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$81.5M |
| 4 |
NVIDIA
NVDA
|
+$60M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| 1 | Consumer Discretionary | 21.73% |
| 2 | Technology | 16.48% |
| 3 | Healthcare | 9.06% |
| 4 | Financials | 8.3% |
| 5 | Communication Services | 7.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1401
Sarepta Therapeutics
SRPT
$1.82B
| $40K | ﹤0.01% |
290
+200
| +222% | +$27.6K |
|
1402
Stoke Therapeutics
STOK
$1.29B
| $40K | ﹤0.01% |
1,202
+732
| +156% | +$24.4K |
|
1403
Travelzoo
TZOO
$105M
| $40K | ﹤0.01% |
+6,327
| New | +$40K |
|
1404
Alnylam Pharmaceuticals
ALNY
$61.1B
| $39K | ﹤0.01% |
+269
| New | +$39K |
|
1405
American Axle
AXL
$697M
| $39K | ﹤0.01% |
6,881
-23,231
| -77% | -$132K |
|
1406
Fluor
FLR
$6.63B
| $39K | ﹤0.01% |
+4,513
| New | +$39K |
|
1407
Lifecore Biomedical
LFCR
$281M
| $39K | ﹤0.01% |
4,046
+3,568
| +746% | +$34.4K |
|
1408
Pinnacle West Capital
PNW
$10.5B
| $39K | ﹤0.01% |
+531
| New | +$39K |
|
1409
Avita Medical
RCEL
$123M
| $39K | ﹤0.01% |
1,565
-200
| -11% | -$4.98K |
|
1410
Urban Edge Properties
UE
$2.66B
| $39K | ﹤0.01% |
4,021
+1,921
| +91% | +$18.6K |
|
1411
Vir Biotechnology
VIR
$695M
| $39K | ﹤0.01% |
1,141
+1,081
| +1,802% | +$36.9K |
|
1412
Boot Barn
BOOT
$5.4B
| $38K | ﹤0.01% |
1,371
-1,038
| -43% | -$28.8K |
|
1413
Vanguard Mega Cap Growth ETF
MGK
$29.7B
| $38K | ﹤0.01% |
207
+124
| +149% | +$22.8K |
|
1414
Supernus Pharmaceuticals
SUPN
$2.55B
| $38K | ﹤0.01% |
1,843
-19,932
| -92% | -$411K |
|
|
ENZ
1415
DELISTED
Enzo Biochem, Inc.
ENZ
| $38K | ﹤0.01% |
18,273
-1,309
| -7% | -$2.72K |
|
|
SGG
1416
DELISTED
iPath Series B Bloomberg Sugar Subindex Total ReturnSM ETN
SGG
| $38K | ﹤0.01% |
+953
| New | +$38K |
|
1417
Lipocine
LPCN
$16.1M
| $37K | ﹤0.01% |
+1,561
| New | +$37K |
|
1418
Mine Safety
MSA
$6.63B
| $37K | ﹤0.01% |
282
-689
| -71% | -$90.4K |
|
1419
NN Inc
NNBR
$117M
| $37K | ﹤0.01% |
7,291
+6,169
| +550% | +$31.3K |
|
1420
Plains All American Pipeline
PAA
$12.3B
| $37K | ﹤0.01% |
+6,318
| New | +$37K |
|
1421
Veritone
VERI
$206M
| $37K | ﹤0.01% |
4,041
-1,200
| -23% | -$11K |
|
|
TCRR
1422
DELISTED
TCR2 Therapeutics Inc. Common Stock
TCRR
| $37K | ﹤0.01% |
1,822
+1,437
| +373% | +$29.2K |
|
|
KOL
1423
DELISTED
VanEck Vectors Coal ETF
KOL
| $37K | ﹤0.01% |
485
-453
| -48% | -$34.6K |
|
1424
Reliance Steel & Aluminium
RS
$15.3B
| $36K | ﹤0.01% |
+354
| New | +$36K |
|
1425
UBS Group
UBS
$129B
| $36K | ﹤0.01% |
3,234
-38,069
| -92% | -$424K |
|