Undergraduate Summer Internship Development Program

Our mission is to offer broad access and exposure to a career path in financial services by creating a candidate pool of first-generation college students and those underrepresented in the investment management industry.

About the Program.

For 10 weeks, approximately 20 interns gain direct experience in a professional setting in a variety of departments throughout the company, including investment and non-investment teams. Interns receive industry-specific professional peer development aimed at providing knowledge and tools to advance in a corporate environment.

Summer 2026 Program dates: 1 June – 7 August 2026.

Applications are now closed for Summer 2026.

Prerequisites.

The Undergraduate Summer Internship Development Program (USID) is a first-generation college program seeking a diverse range of students who are currently underrepresented in the investment industry. This program seeks undergraduates that are passionate to learn more about the investment management industry and have the following prerequisites:

GPA of 3.0 or above
Rising sophomores, juniors and seniors
First-generation college students
Underrepresented in the investment industry

What You’ll Gain From This Program.

Direct Experience

Students get direct experience by spending 10 weeks learning meaningful, practical and project-based work in a professional setting.

Ongoing Development

Students receive industry-specific and personal development aimed to give knowledge and tools to advance in a corporate environment.

Mentorship

Students are matched with an employee to support connecting experience and development to a potential career by sharing knowledge, experience, and career advice.

Don’t let it be a barrier that you are underrepresented in finance or that you do not have that experience, because this program is really built to help you at every step of the way and to give you that foundation to move on to further opportunities in the finance sector.

Amanda Hulver USID Intern, Massachusetts Institute of Technology

Undergraduate Summer Internship Development Program (USID) Video

Vault 2026 Internship Rankings

The Loomis Sayles Undergraduate Summer Internship Development Program was recognized by Vault as one of the best internships for 2026 – ranking #30 in the training & mentoring category, #36 in the quality of assignments category, #42 in the overall career development category, #54 in best internships for women, #73 in the networking opportunities category, and #74 in the real-life experiences category.

Areas of Development & Focus.

Bloomberg Certification
Basics of Financial Market Structure
Cover Letter and Resume Writing
Equity Investing Basics
Excel Training
Executive Functioning
Financial Literacy
Financial Modeling
Fixed Income Basics
Interview Prep and Practice
Industry Knowledge Training
Making the Most of Your LinkedIn
Negotiating Job Offers
Social Media and Personal Branding
Teamwork and Collaboration

Department & Team Positions.

Accounting
Client Relationship Management
Communications
Consultant Relations
Equity Research
Fixed Income Research
Human Resources
Investment Operations
Legal & Compliance
Marketing
Trading

Explore More Internship Programs.

Undergraduate Women’s Investment Network

Location:
One Financial Center, Boston, MA.
Program Time:
2025-2026 School Year
Program Types:
Mentorship & Internship

LEARN MORE

VALOR

Location:
One Financial Center, Boston, MA
Program Time:
Summer 2026: 1 June – 7 August 2026
Program Length:
10-weeks

LEARN MORE

Associate Development Program

Select participants of Loomis Sayles’s UWIN and USID programs are invited to apply for the Associate Development Program (ADP) upon graduation. The ADP is a two year rotation program in which participants are hired by the firm to complete a series of multi-month engagements within a variety of departments across the firm. Participants work with mentors and receive additional training and development opportunities.

For more information, please watch the video.

FAQs

Is there a deadline?

The deadline for Summer 2026 is 17 October. Applications are now closed.

How long is the internship?

The internship will last approximately 10 weeks (based on student availability). The timing will be from early June to mid-August.

Are the internships paid?

Yes, our internships are paid.

Vault 2026 Internship Ranks

2026: On October 21, 2025, the Loomis Sayles Undergraduate Summer Internship Development Program was recognized by Vault as one of the best internships for 2026 – ranking 30 in the training & mentoring category, #36 in the quality of assignments category, #42 in the overall career development category, #54 in best internships for women, #73 in the networking opportunities category, and #74 in the real-life experiences category. Vault ranking is based on surveyed current and former interns for the summer of 2023. Respondents were asked to rate their internship experiences in six core areas. Loomis Sayles did not pay a fee to be considered.