weak sister

noun
Updated on: 13 Oct 2017

Definition of weak sister

: a member of a group who needs aid; also : something weak and ineffective as compared with others in a group

Examples of weak sister in a Sentence

  1. The company is no longer a weak sister among auto producers.

First Known Use of weak sister

1857


Financial Definition of WEAK SISTER

weak sister

What It Is

A weak sister is a security, economy or operating unit that performs worse than all the others.

How It Works

Let's say John Doe's portfolio contains five stocks: Company A, Company B, Company C, Company D and Company E.

Company A and B have returned 25% over the last five years. Company C has returned 15%. Company D has returned 40%. Company E has returned only 1%. In this portfolio, Company E is the weak sister and is pulling down the average return of the whole portfolio.

Why It Matters

Weak sisters drag down overall performance, which is why there is often a temptation to get rid of them. However, weak sisters can sometimes surprise everyone and thus may be worth sparing. Because they are valued the lowest or have the lowest expectations, and growth or improvement can be dramatic.


WEAK SISTER Defined for English Language Learners

weak sister

noun

Definition of weak sister for English Language Learners

  • : a member of a group that is weak or unsuccessful in comparison to others in the group


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