We Pursue a Simple Mission:

Learn, build,
share, repeat.

We constantly learn more about investing, build disciplined strategies to capture the best of what we've learned, and share our broad findings with other curious investors.


O’Shaughnessy Quarterly Investor Letter Q2 2018

In this quarter's letter, we're going to share our thoughts on three key topics: the Value factor’s extended run of poor performance, the ways we believe asset managers can borrow concepts from the technology sector, and our current research agenda.

Factors from Scratch

The excess returns associated with Value and Momentum result from convergent and divergent processes, respectively. Value stocks are systematically underpriced and gradually converge on their fair value over time. Momentum stocks start out fairly valued or slightly overvalued, and go on to become more overvalued in the short-term, before reverting back. Both styles represent a market mistake that can be captured as alpha. In this piece, we're going to make all of these points more clear through a unified framework that we've developed to explain how factors work.

Listen to the Podcast

Announcing OSAM Research Partners

Today we are announcing a new initiative: the OSAM Research Partners Program. Through the program, we will begin building formal relationships with the brightest and most curious people we can find to produce new research for the benefit of our investors and the broader community.

OSAM at a Glance

22 years Managing client money
$6.7B Assets under management and advisement
17 strategies Our model applied: Micro to Large cap; US to Global
85,241 Stocks studied across six decades of history
Managing client money
Assets under management and advisement
Our model applied: Micro to Large cap; US to Global
Stocks studied across six decades of history

Investment Strategies

We build portfolios with significant factor advantages in different style segments, market capitalization ranges, and geographic regions. Our portfolios tend to have low excess return correlation with other active strategies, little overlap with market indexes, and low active costs. We have routinely worked with clients to build custom solutions.


Our Team -
Consistency, Creativity, and Alignment

Investment success requires constant exploration, disciplined implementation, and skin in the game. We have built a team dedicated to applying our style of investing for the long term, whose interests are aligned with our clients and fellow OSAM colleagues.


Owned by 13 principal employees
Our money is aligned with yours: no personal trading, 100% of our Principals are invested in OSAM strategies
Our principals have been with the firm an average of 11 years.
Jim O'Shaughnessy
Principal, Chairman and Chief Investment Officer, Portfolio Manager

Blog & Research

OSAM is committed to conducting interesting new research on markets and sharing our findings with investors. We want to manage money on behalf of committed, long-term investors, which means sharing what we learn. To follow our journey, you can read, listen and watch.

  • July 2018 Announcing a New OSAM Research Partner July 2018
  • June 2018 O’Shaughnessy Quarterly Investor Letter Q2 2018 June 2018
  • May 2018 Factors from Scratch May 2018