13F-HR | SEC Filings Hub

Filing metadata

Accession number: 0000883597-26-000003
Form type: 13F-HR
Filer: TETRAD CORP
CIK: CIK 883597
Filed: Jul 06, 2026
Reporting period: Jun 30, 2026
Description: Institutional holdings

Documents

0000883597-26-000003-index.htm

Complete submission

0000883597-26-000003.txt

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