Westport Fuel Systems Inc. (WPRT) Institutional Ownership

Ownership Summary

Recent 13F filings as of September 2025 show that 40 institutional investors hold a position in Westport Fuel Systems Inc. (NASDAQ:WPRT).

• Westport Fuel Systems saw its institutional ownership percentage rose to 12.9% in September 2025 from 12.7% in June 2025.
• On a quarter-over-quarter basis, institutional holdings shifted by 1.78%, with a year-over-year a decrease of 14.89% in the count of filers.
• The latest 13F cycle for Westport Fuel Systems reveals that of 40 total investors, 12 funds grew their exposure, whereas 8 reduced theirs and 20 made no changes.
• Collectively, institutional investors increased their stake in Westport Fuel Systems to 2.24Mn shares as of September 2025, a change that is up by 39.05K shares quarter on quarter and up 230.10K shares year over year.
• The top institutional stake in Westport Fuel Systems as of September 30, 2025 belongs to GRACE & WHITE INC /NY, which owns 1.05Mn shares, or 6.03% of the company.
• Among the most significant buyers of Westport Fuel Systems during September 2025 were CITADEL ADVISORS LLC (50.83K), ROYAL BANK OF CANADA (27.11K), Federation des caisses Desjardins du Quebec (1.75K), GOLDMAN SACHS GROUP INC (1.60K), GRACE & WHITE INC /NY (1.32K).
• Leading sellers of Westport Fuel Systems stock in September 2025 included Baird Financial Group, Inc. (22.87K), AMH Equity Ltd (18.72K), MORGAN STANLEY (1.64K), Tower Research Capital LLC (TRC) (1.30K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (826).
• The top 10 institutional holders of Westport Fuel Systems for the quarter ending September 2025 included GRACE & WHITE INC /NY (1.05Mn), Baird Financial Group, Inc. (549.07K), ROYAL BANK OF CANADA (180.01K), US BANCORP \DE\ (166.83K), AMH Equity Ltd (137.00K), CITADEL ADVISORS LLC (50.83K), GOLDMAN SACHS GROUP INC (31.35K), TD Waterhouse Canada Inc. (18.09K), UBS Group AG (15.32K), Cambridge Investment Research Advisors, Inc. (12.63K).