
Rajat Babbar
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- Full Name
- Rajat Babbar, CFA
- Title
- Partner, Head of Portfolio Strategy/Risk Management
- Firm
- Westfield Capital Management Company, L.P.
- Firm Type
- SEC-registered investment adviser; independent, employee-owned investment management firm specializing in U.S. growth equities
- Investment Stage
- Public equities / growth equity strategies; no verified public evidence found that he is an angel or seed-stage startup investor
- Target Company Profile
- High-quality public companies with under-appreciated earnings growth, strong fundamentals, durable competitive advantages, asymmetrical risk/reward, and compelling valuation
- Sector Focus
- U.S. growth equities across small-cap, small/mid-cap, mid-cap, large-cap, all-cap and select-growth strategies; sector strategies include Dividend Growth, Health Care, and Sustainable Growth
- Geographic Focus
- U.S. equities
- Location
- Greater Boston / Brookline, Massachusetts
Background
Rajat Babbar is a Partner at Westfield Capital Management and serves as Head of Portfolio Strategy/Risk Management. Westfield says he is a member of the firm’s Investment Committee and brings experience in quantitative research, portfolio construction, and multi-asset risk oversight.
Babbar joined Westfield in 2014. Before Westfield, he spent 2009–2014 as a Partner and Analyst at Copper Rock Capital Partners. Earlier, he was a founding partner and portfolio manager at Ocean State Asset Management and held investment roles at New England Asset Management and New England Trust. He began his career at SEI Investments as a Senior Investment Analyst from 1998–2001.
He holds an M.B.A. from the University of Illinois Urbana-Champaign, earned in 1998, and a B.E. from Delhi College of Engineering, earned in 1995. He is a Chartered Financial Analyst.
Investment Thesis & Focus
- Westfield’s stated philosophy is “identifying under-appreciated growth at reasonable valuations.”
- The firm says its process looks for durable competitive advantages, under-appreciated earnings growth, asymmetrical risk/reward, and compelling valuation.
- Westfield builds portfolios through a bottom-up, research-led process that includes cross-sector collaboration, formal investment review, portfolio construction, and risk management.
- Babbar’s role is portfolio strategy and risk management rather than direct venture sourcing; available public sources do not verify a personal angel-investing thesis, check size, or seed-stage portfolio.
- Westfield’s public-equity strategies span the U.S. market-cap spectrum, including Small Cap, Small/Mid Cap, Mid Cap, Large Cap, All Cap, and Select Growth.
Notable Investments
- NVIDIA Corporation: Westfield’s largest disclosed 13F holding as of March 31, 2026; 6,317,039 shares valued at about $1.10 billion.
- Ascendis Pharma A/S: One of Westfield’s largest disclosed 13F holdings as of March 31, 2026; 4,813,440 shares valued at about $1.10 billion.
- Comfort Systems USA: Top disclosed holding as of March 31, 2026; 620,915 shares valued at about $856 million.
- Apple: Top disclosed holding as of March 31, 2026; 3,133,113 shares valued at about $795 million.
- FTAI Aviation: Top disclosed holding as of March 31, 2026; 2,848,227 shares valued at about $698 million.
- Microsoft: Top disclosed holding as of March 31, 2026; 1,649,513 shares valued at about $611 million.
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