RuleOne

← Learn · Module: Events and buying

352 · Your Margin of Safety - How Close is Close Enough?

2022-01-18 · 36 minEventReduce basis

In one sentence: After Microsoft announced a deal for Activision that would have paid Phil roughly 50% above the price he was waiting for, he and Danielle ask how close to your target price counts as close enough, and why you need rules set in advance.

Key ideas

How it maps to RuleOne

Buffett, Munger and Graham links

Words to know

Try this

Pick one name on your watch list from /stocks/. Write the price at which you would buy tranche one, tranche two and the remainder, and what news would make you stop. Check it against /stock/TICKER/ and set your tolerance (for example, "within 5% counts") before the price moves.

Check yourself

  1. What went wrong in the Activision case, according to Phil?
    AnswerThe stock stalled just above the target; the team finished the thinking but did not act, and a takeover bid lifted the price about 50%.
  2. Why is a drop after your purchase not necessarily a mistake?
    AnswerIf the value is unchanged, a lower price is a better deal; the plan should include money to buy more.
  3. What does selling puts at a strike you like achieve in the Whole Foods example?
    AnswerIt lowers the adjusted basis immediately, and if the stock falls to the strike you buy more at a price you already wanted.

Short quotes

"We like to do a lot of thinking and not a lot of acting." (Phil, quoting Lou Simpson, ~03:30, auto-transcribed)

margin of safetypredefined rulestranche buyingratio putadjusted basispost mortemfounder ledtakeoverrocket tradelou simpson

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AI study notes from an automatic transcript. Names and figures may be misheard, and quotes are short excerpts for study. Not investment advice.