Sean Diffley

Analyst-Equity at

Morgan Stanley & Co. LLC

Finance

Consumer Services

Profile

Sean Diffley is currently a Managing Director at Morgan Stanley & Co. LLC since 2025, with employment at the firm starting in 2008.
Formerly, Mr. Diffley worked as an LCA Analyst at Lehman Brothers, Inc. in 2008 and as an Analyst at Morgan Stanley Smith Barney LLC from 2009 to 2013.
Mr. Diffley completed an undergraduate degree at Villanova University in 2008.

Sean Diffley active positions

Companies	Position	Start
Morgan Stanley & Co. LLC Morgan Stanley & Co. LLC Investment Banks/BrokersFinance Provides brokerage services	Analyst-Equity	01/12/2008

All active positions of Sean Diffley

Former positions of Sean Diffley

Companies	Position	End
Morgan Stanley Smith Barney LLC Morgan Stanley Smith Barney LLC Investment Banks/BrokersFinance Provides brokerage services	Analyst-Equity	01/05/2013
Lehman Brothers, Inc. Lehman Brothers, Inc. Investment Banks/BrokersFinance Provides investment banking services	Corporate Officer/Principal	30/11/2008

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Training of Sean Diffley

Experiences
Positions held

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Private companies

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Connections

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Linked companies

Private companies	4
Lehman Brothers, Inc. Lehman Brothers, Inc. Investment Banks/BrokersFinance Provides investment banking services	Finance
Morgan Stanley & Co. LLC Morgan Stanley & Co. LLC Investment Banks/BrokersFinance Provides brokerage services	Finance
Villanova University Villanova University Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Morgan Stanley Smith Barney LLC Morgan Stanley Smith Barney LLC Investment Banks/BrokersFinance Provides brokerage services	Finance