Boston Partners
Boston Partners is a Boston-based investment management firm specializing primarily in value-oriented equity strategies.
Last updated August 26, 2026
AI crawler reads
No AI crawler has read this profile since Oct 28, 2026.
Overview
Boston Partners Global Investors, Inc., commonly known as Boston Partners, is an American investment management firm headquartered in Boston, Massachusetts. The firm is associated primarily with value investing in equities and serves institutional and private-wealth clients. Its investment approach uses valuation and related fundamental measures, including price-to-earnings and price-to-book ratios, as part of the process for identifying securities that appear attractively priced relative to their underlying businesses or assets. The firm traces its institutional lineage to The Boston Company, an organization established in 1865 to provide custodial and trust services for mutual funds, pension funds, charitable organizations, and other clients. The Boston Company changed ownership several times before Boston Company Asset Management, its investment-management unit, became the source of a management-led breakaway in the mid-1990s. In April 1995, Desmond Heathwood and other executives left the unit to establish Boston Partners. The new firm began operating from One Financial Center in Boston on April 25, 1995, and started managing client assets on May 8 of that year. At formation it had 33 employees, most of whom had previously worked on Boston Company Asset Management’s equity team. A substantial majority of its initial clients had also previously been clients of that unit. Boston Partners’ launch was accompanied by litigation with Boston Company Asset Management. The former employer sued five founders, alleging breaches of fiduciary duty and misappropriation of trade secrets. The dispute was settled in December 1995 through an undisclosed payment and restrictions on how Boston Partners could promote the historical performance of its investment professionals. The parties were also restricted from publicly discussing the details of the settlement. Ownership subsequently shifted to Robeco. Robeco acquired 60 percent of Boston Partners in September 2002 and the remaining 40 percent in 2003, making the firm a wholly owned Robeco subsidiary. In February 2013, ORIX Corporation acquired Robeco, thereby becoming Boston Partners’ ultimate parent. Boston Partners is described as an indirect, wholly owned subsidiary of ORIX Corporation. The organization has been described as comprising three principal divisions: Boston Partners, Boston Partners Private Wealth, and Weiss, Peck & Greer Partners. These divisions reflect the firm’s institutional investment-management, private-wealth, and related investment capabilities. The firm’s best-known specialization remains value-oriented equity management, although the reference material also identifies quantitative research and a former 130/30 Large Cap Value product within its business history. Boston Partners remains an active operating investment firm, but detailed current information about its assets under management, executive roster, product lineup, and geographic distribution is not established by the supplied sources.
History
Boston Partners’ history is rooted in the longer institutional history of The Boston Company, a financial-services organization founded in 1865. The Boston Company initially provided custodial and trust services to mutual funds, pension funds, charitable organizations, and similar clients. Its ownership later changed when Shearson, operating under American Express, acquired it in 1981 for $50 million. In 1993, Shearson sold The Boston Company to Mellon Bank for $1.5 billion, a transaction regarded at the time as expensive and poorly received by some Mellon shareholders. The Boston Company Asset Management unit, commonly referred to as BCAM, subsequently experienced tensions with Mellon over the autonomy of its managers. The unit’s leadership objected to what it viewed as reduced independence, and Mellon at one point attempted to dismiss two BCAM managers in connection with securities-lending losses. Desmond Heathwood, then BCAM’s chairman and chief executive officer, attempted to organize a $150 million management buyout but was unsuccessful. In April 1995, Heathwood and several other BCAM executives departed to form Boston Partners. The new company initially employed 33 people, nearly all drawn from BCAM’s equity team. It moved into One Financial Center in Boston on April 25, 1995, and began managing client assets on May 8. The firm obtained a strong initial client base from its predecessor environment: approximately 90 percent of its clients were former BCAM clients. The breakaway led to a legal dispute. BCAM sued five Boston Partners founders, alleging breaches of fiduciary duty and misappropriation of trade secrets. The dispute concluded in December 1995 with a settlement that included an undisclosed payment by Boston Partners. The settlement also restricted Boston Partners from promoting the investment performance of its managers during their earlier BCAM tenure, and both sides were prohibited from discussing the details publicly. Boston Partners later became part of the Robeco organization. Robeco acquired 60 percent of the company in September 2002 and purchased the remaining 40 percent in 2003, resulting in full ownership. In February 2013, ORIX Corporation acquired Robeco. Through that transaction, Boston Partners became an indirect, wholly owned subsidiary of the Japanese financial group ORIX. The firm’s central investment identity is value-oriented equity management. Its process has been associated with valuation measures such as price-to-earnings and price-to-book ratios. The organization has also been described as having three divisions: Boston Partners, Boston Partners Private Wealth, and Weiss, Peck & Greer Partners. Its history includes quantitative research activity and a 130/30 Large Cap Value product, which was discontinued in 2020 after its final client withdrew. A later employment dispute became publicly documented through litigation. Martin MacDonnell alleged that Boston Partners discriminated against him because of post-traumatic-stress-related health issues, failed to notify him about opportunities, demoted him, and did not provide adequate accommodations after he sought to return from medical leave. The firm disputed those allegations in court filings, stating that it provided paid and unpaid leave, flexible scheduling, remote-work options, workspace adjustments, and reassignment to quantitative research without a salary reduction. The firm also said that MacDonnell sought reinstatement to a portfolio-manager role that no longer existed after the associated product had been discontinued.
- 2020
130/30 Large Cap Value product is discontinued
[1]According to litigation filings summarized in the reference material, the product ends after its final client withdraws.
- 2013
ORIX becomes the ultimate parent
[1]ORIX Corporation acquires Robeco, placing Boston Partners within the ORIX Group.
- 2003
Robeco takes full ownership
[1]Robeco purchases the remaining 40 percent of Boston Partners.
- 2002
Robeco acquires a majority stake
[1]Robeco acquires 60 percent of Boston Partners.
- 1995
Boston Partners is founded
[1]Desmond Heathwood and other former Boston Company Asset Management executives establish Boston Partners after an unsuccessful management-buyout effort.
- 1995
Operations begin in Boston
[1]The firm moves into One Financial Center on April 25 and begins managing client assets on May 8.
- 1993
The Boston Company is sold to Mellon Bank
[1]Shearson sells The Boston Company to Mellon Bank in a transaction valued at $1.5 billion.
- 1981
Acquisition by Shearson
[1]Shearson, under American Express, acquires The Boston Company for $50 million.
- 1865
The Boston Company is established
[1]The organization from which Boston Partners traces its institutional origins is founded to provide custodial and trust services to mutual funds, pension funds, charities, and other clients.
Products and positioning
A specialist investment manager positioned around disciplined, research-driven value investing in equities, serving institutional and private-wealth clients within the broader ORIX Group.
Equity asset management
Value Equity Strategies
Boston Partners’ core investment specialization is value-oriented equity management. The approach evaluates companies using valuation measures such as price-to-earnings and price-to-book ratios, together with broader investment research. These strategies are designed for institutional and other professional investors seeking actively managed equity exposure based on relative valuation and fundamental analysis.
Private wealth management
Boston Partners Private Wealth
Boston Partners Private Wealth is identified as one of the firm’s three principal divisions. It represents the organization’s private-wealth offering, applying the firm’s investment-management capabilities to the needs of private clients. The supplied reference material does not specify its current service menu, minimum account sizes, or geographic coverage.
Enhanced equity strategy
130/30 Large Cap Value
The 130/30 Large Cap Value product was a large-cap value strategy associated with Boston Partners. In court filings, the firm stated that the product was discontinued in 2020 after its final client withdrew. The reference material does not provide its launch date or detailed performance history.
Investment management division
Weiss, Peck & Greer Partners
Weiss, Peck & Greer Partners, also referred to as WPG Partners, is identified in the reference material as one of Boston Partners’ three divisions. The supplied sources do not provide enough detail to describe its current strategies or standalone product range.
Controversies
2022
MacDonnell disability-discrimination lawsuit
Martin MacDonnell alleged that Boston Partners discriminated against him because of a disability, failed to communicate promotion and job opportunities, demoted him, and failed to provide reasonable accommodations after he sought to return from medical leave. The firm disputed the allegations, asserting that it provided leave and multiple accommodations and that the portfolio-manager position he sought no longer existed after the relevant product was discontinued.
1995
Boston Company Asset Management litigation
Following the departure of Heathwood and other executives, Boston Company Asset Management sued five Boston Partners founders, alleging breaches of fiduciary duty and misappropriation of trade secrets. The parties settled in December 1995. The settlement included an undisclosed payment and restrictions on Boston Partners’ use of the managers’ earlier performance record.
Brand decisions
2020
Discontinuation of 130/30 Large Cap ValueOtherBackground
The final client of the 130/30 Large Cap Value product withdrew.
Action taken
Boston Partners discontinued the product and reassigned the associated portfolio manager to its Quantitative Research Team, according to court filings summarized in the reference material.
Aftermath
The product no longer existed as a portfolio-management platform, contributing to the employment dispute later brought by Martin MacDonnell.
2013
ORIX acquires RobecoM&ABackground
Boston Partners was a wholly owned subsidiary of Robeco.
Action taken
ORIX Corporation acquired Robeco, making it Boston Partners’ ultimate parent.
Aftermath
Boston Partners became an indirect, wholly owned subsidiary of the Japanese ORIX financial group.
2003
Robeco completes acquisition of Boston PartnersM&ABackground
Robeco already held a 60 percent interest acquired in the previous year.
Action taken
Robeco purchased the remaining 40 percent of Boston Partners.
Aftermath
Boston Partners became wholly owned by Robeco until ORIX acquired Robeco in 2013.
2002
Robeco purchases a majority stakeM&ABackground
Boston Partners had operated independently since its formation in 1995.
Action taken
Robeco acquired 60 percent of the firm.
Aftermath
Robeco acquired the remaining shares in 2003 and became the firm’s sole owner.
1995
Management team forms an independent investment firmStrategyBackground
Desmond Heathwood and other Boston Company Asset Management executives were dissatisfied with the unit’s relationship with Mellon and had been unable to complete a management buyout.
Action taken
The executives left BCAM and established Boston Partners as an independent investment manager focused on equity capabilities.
Aftermath
Boston Partners began managing assets in May 1995, attracted many former BCAM clients, and became involved in litigation with its former employer.
Sources1 sources
Cite this profile: Cite the canonical profile. /brand-wiki/boston-partners · Editorial policy · How profiles are compiled