An accretive/dilutive question given ROE of one firm and P/E ratio of the other

Just got this one from interview:

Listed companies A and B, A has an ROE of 9%, B has a P/E ratio of 10x. Now A acquires B in all-stock, is this deal Accretive or dilutive? Follow-up: What if A does it in all-cash? What if A is a private company?

I only know in an all-stock deal, if A has a higher/lower P/E ratio than B, it will be Accretive/dilutive. But how can I derive P/E ratio from ROE? And why A's being listed or private would make a difference?

Thanks in advance!

5 Comments
 

I am not positive, but I think ROE could be a proxy for the yield of equity.

So a 9% ROE would translate into a P/E where E/P = 9%, which is a P/E of 11.1. In the all stock deal, the acquisition of a firm with a 10 P/E with stock that is at 11.1 P/E would be Accretive. Can anyone back this up?

As far as the other two, I think more advanced guys will have to chime in.

 

This was my first thought too.

I'd also guess that if A is private, the answer doesn't change. Assuming ROE is calculated on BV (as it usually is) then it's still going to be Accretive. And I believe you'd need more information to answer the 100% cash scenario, because I could see it going either way.

Maximum effort.
 
Best Response

Porro non ut ut repellat vitae vel laboriosam. Debitis odit dolorem repellendus. Qui debitis sint sunt. Rem repellat consequatur aperiam. Reiciendis voluptate quos illum quae id veritatis.

Cupiditate nihil error laborum exercitationem sed ut quia corporis. Et distinctio fuga eum doloremque rerum. Voluptates voluptas quia perferendis fuga a autem quae.

Doloribus in reprehenderit aut voluptates iste sed est accusantium. Quibusdam necessitatibus nulla laborum assumenda nemo. In est quia et nostrum quidem. Nemo rem saepe corrupti exercitationem. Quis quos est id et quam vel et nihil. Cupiditate corrupti natus dolorum qui nobis.

Career Advancement Opportunities

November 2026 Investment Banking

  • Evercore 01 99.5%
  • Moelis & Company 01 99.0%
  • JPMorgan 01 98.4%
  • Guggenheim Partners 02 97.9%
  • Morgan Stanley 06 97.4%

Overall Employee Satisfaction

November 2026 Investment Banking

  • Moelis & Company No 99.5%
  • Morgan Stanley 02 99.0%
  • Evercore 01 98.4%
  • Banco Santander 02 97.9%
  • BMO Capital Markets 13 97.4%

Professional Growth Opportunities

November 2026 Investment Banking

  • Evercore 01 99.5%
  • Moelis & Company 01 99.0%
  • Morgan Stanley 05 98.4%
  • Goldman Sachs 01 97.9%
  • JPMorgan No 97.4%

Total Avg Compensation

November 2026 Investment Banking

  • Vice President (16) $429
  • Associates (57) $264
  • 3rd+ Year Analyst (8) $210
  • 2nd Year Analyst (28) $184
  • Intern/Summer Associate (16) $161
  • 1st Year Analyst (84) $151
  • Intern/Summer Analyst (76) $101
notes
16 IB Interviews Notes

“... there’s no excuse to not take advantage of the resources out there available to you. Best value for your $ are the...”

Leaderboard

success
From 10 rejections to 1 dream investment banking internship

“... I believe it was the single biggest reason why I ended up with an offer...”