moat
Concept
moat
Mentioned in
13
documents, spanning 1961–2023
1960s
1961
Partnership Letter
1980s
1983
Shareholder Letter
1987
Shareholder Letter
1990s
1993
Shareholder Letter
1996
Annual Meeting
1999
Shareholder Letter
2000s
2002
Annual Meeting
2006
Annual Meeting
2009
Annual Meeting
2010s
2012
Shareholder Letter
2015
Annual Meeting
2020s
2020
Shareholder Letter
2023
Shareholder Letter
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