What this is
Compare Howard Marks's sell discipline (this playbook) against Warren Buffett's 'favorite holding period is forever' philosophy. Where do they agree? Where do they actually conflict?
Working thesis
They're more aligned than popular accounts suggest. Marks's 'don't sell early' rule is a Buffett rule (Amazon to ,300 story). Marks's sell discipline is a kill-trigger response to structural breakage, which Buffett also practices (IBM exit). What differs is the bar for what counts as 'structural.'
Output
Essay-length deep dive. Publish as a GitHub Discussion first, promote to essay on strategysprints.com blog if it performs.
What this is
Compare Howard Marks's sell discipline (this playbook) against Warren Buffett's 'favorite holding period is forever' philosophy. Where do they agree? Where do they actually conflict?
Working thesis
They're more aligned than popular accounts suggest. Marks's 'don't sell early' rule is a Buffett rule (Amazon to ,300 story). Marks's sell discipline is a kill-trigger response to structural breakage, which Buffett also practices (IBM exit). What differs is the bar for what counts as 'structural.'
Output
Essay-length deep dive. Publish as a GitHub Discussion first, promote to essay on strategysprints.com blog if it performs.