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Filing
13F-HR
13F-HR
0000900440-25-000128
·
TETRAD CORP
Filer
Filing index
Filing metadata
Accession number
0000900440-25-000128
Form type
13F-HR
Filer
TETRAD CORP
CIK
CIK 883597
Filed
Aug 01, 2025
Reporting period
Dec 31, 2015
Description
Institutional holdings
Documents
Filing index
0000900440-25-000128-index.htm
Complete submission
0000900440-25-000128.txt
All documents
directory listing
Filed by
TETRAD CORP
CIK 883597
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13F-HR | SEC Filings Hub