Fritz 11 Portable -

No. ChessBase software requires installation and online activation (except very old versions like Fritz 5.32, which used a hardware dongle).
The closest legitimate alternatives:

Despite being stripped down to fit into a portable package, Fritz 11 retained the features that made the retail version a best-seller: fritz 11 portable

Cracked executables are a common vector for: Always scan any portable executable with multiple antivirus

Always scan any portable executable with multiple antivirus engines (e.g., VirusTotal) before running. fritz 11 portable

Fritz 11 uses CD-based or serial-based copy protection. A portable version would require either a no-CD crack or a keygen—both of which raise legal and security concerns.