Seth Timen Named Co-Head of the Loomis Sayles Disciplined Alpha Team

  • Seth Timen is now co-head of the Loomis Sayles Disciplined Alpha team alongside Lynne Royer
  • The team manages more than $16.3 billion across the disciplined alpha platform as of December 31, 2020

Seth Timen is co-head of the Disciplined Alpha team at Loomis, Sayles & Co. (Photo: Business Wire)

BOSTON--()--Loomis, Sayles & Company, an affiliate of Natixis Investment Managers, announced today that Seth Timen was promoted to co-head of the Loomis Sayles Disciplined Alpha team along side Lynne Royer, effective January 1, 2021. Seth reports to David Waldman, deputy chief investment officer of Loomis Sayles.

The Loomis Sayles Disciplined Alpha team currently manages $16.3 billion across a suite of disciplined alpha products. The team believes they can produce alpha consistently by understanding where bonds should trade at any given time and making good judgments within a structured process every day. Their $8.0 billion flagship Core Disciplined Alpha strategy, which launched in 2010, has delivered its investors a return of 4.52% gross (4.33% net) since inception on September 1, 2010, versus the 3.59 % return of the Bloomberg Barclays US Aggregate Index (through December 31, 2020). Integrated real-time risk management helps support the entire process from security selection to sector, curve, and duration positioning. The team also manages the Loomis Sayles Corporate Disciplined Alpha, Long Corporate Disciplined Alpha, Long Credit Disciplined Alpha and Intermediate Core Disciplined Alpha strategies.

In his new role, Seth will partner with team co-founder Lynne Royer on portfolio holdings and team management, as well as marketing and client service efforts. He will also retain some trading and portfolio construction responsibilities. Seth joined Loomis Sayles as a credit trader in 2010 from Pequot Capital Management. He was promoted to senior credit trader in 2014 and credit portfolio manager in 2016. Previously, Seth was an associate at Credit Suisse, where he assisted with corporate bond investment and strategy execution for institutional clients. He earned a BA from the University of Michigan.

“Seth has made significant contributions to the disciplined alpha platform over the past 10 years in alpha generation and pursuing excellence for our clients in all aspects of our business,” said Lynne Royer, portfolio manager and co-head of the Disciplined Alpha team. “Seth has demonstrated strong leadership and investment acumen over the past decade with the team and I’m happy to strengthen our partnership with his promotion to co-head of the team. I am confident that his contributions will continue to be critical in our continued growth and success.”

Indices are unmanaged and do not incur fees. It is not possible to invest directly in an index.
Returns may increase or decrease as a result of currency fluctuations

Current performance may be lower or higher than quoted. Returns are shown in US dollars and are annualized for one and multi-year periods. Gross returns are net of trading costs. Net returns are gross returns less effective management fees.

For additional information on this and other Loomis Sayles strategies, please visit our website at

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Separate accounts are based on client preference and mandate size.
This is not an offer of, or a solicitation of an offer for, any investment strategy or product.

There is no guarantee that the investment objective will be realized or that the strategy will generate positive or excess return.

Any investment that has the possibility for profits also has the possibility of losses.

Past performance is no guarantee of future results.

About Risk

Fixed income securities may carry one or more of the following risks: credit, interest rate (as interest rates rise bond prices usually fall), inflation and liquidity. Below investment grade fixed income securities may be subject to greater risks (including the risk of default) than other fixed income securities. Foreign and emerging market securities may be subject to greater political, economic, environmental, credit, currency and information risks. Foreign securities may be subject to higher volatility than US securities due to varying degrees of regulation and limited liquidity. These risks are magnified in emerging markets.


Since 1926, Loomis, Sayles & Company has helped fulfill the investment needs of institutional and mutual fund clients worldwide. The firm’s performance-driven investors integrate deep proprietary research and integrated risk analysis to make informed, judicious decisions. Teams of portfolio managers, strategists, research analysts and traders collaborate to assess market sectors and identify investment opportunities wherever they may lie, within traditional asset classes or among a range of alternative investments. Loomis Sayles has the resources, foresight and the flexibility to look far and wide for value in broad and narrow markets in its commitment to deliver attractive sustainable returns for clients. This rich tradition has earned Loomis Sayles the trust and respect of clients worldwide, for whom it manages $347.8 billion * in assets (as of December 31, 2020).

*Includes the assets of Loomis, Sayles & Co., LP, and Loomis Sayles Trust Company, LLC. Loomis Sayles Trust Company is a wholly owned subsidiary of Loomis, Sayles & Company, LP.


Natixis Investment Managers serves financial professionals with more insightful ways to construct portfolios. Powered by the expertise of more than 20 specialized investment managers globally, we apply Active Thinking® to deliver proactive solutions that help clients pursue better outcomes in all markets. Natixis Investment Managers ranks among the world’s largest asset management firms1 with nearly $1.1 trillion assets under management2 (€910.0 billion).

Headquartered in Paris and Boston, Natixis Investment Managers is a subsidiary of Natixis. Listed on the Paris Stock Exchange, Natixis is a subsidiary of BPCE, the second-largest banking group in France. Natixis Investment Managers’ affiliated investment management firms include AEW; Alliance Entreprendre; AlphaSimplex Group; DNCA Investments;3 Dorval Asset Management; Flexstone Partners; Gateway Investment Advisers; H2O Asset Management; Harris Associates; Investors Mutual Limited; Loomis, Sayles & Company; Mirova; MV Credit; Naxicap Partners; Ossiam; Ostrum Asset Management; Seeyond; Seventure Partners; Thematics Asset Management; Vauban Infrastructure Partners; Vaughan Nelson Investment Management; Vega Investment Managers;4 and WCM Investment Management. Additionally, investment solutions are offered through Natixis Investment Managers Solutions, and Natixis Advisors offers other investment services through its AIA and MPA division. Not all offerings available in all jurisdictions. For additional information, please visit Natixis Investment Managers’ website at| LinkedIn:

Natixis Investment Managers’ distribution and service groups include Natixis Distribution, L.P., a limited purpose broker-dealer and the distributor of various U.S. registered investment companies for which advisory services are provided by affiliated firms of Natixis Investment Managers, Natixis Investment Managers S.A. (Luxembourg), Natixis Investment Managers International (France), and their affiliated distribution and service entities in Europe and Asia.

1 Cerulli Quantitative Update: Global Markets 2020 ranked Natixis Investment Managers as the 17th largest asset manager in the world based on assets under management as of December 31, 2019.
2 Assets under management (“AUM”) as of September 30, 2020 is $1,067.3 billion. AUM, as reported, may include notional assets, assets serviced, gross assets, assets of minority-owned affiliated entities and other types of non-regulatory AUM managed or serviced by firms affiliated with Natixis Investment Managers.
3 A brand of DNCA Finance.
4 A wholly-owned subsidiary of Natixis Wealth Management.



Orla O’Brien


Orla O’Brien