# WESTPORT FUEL SYSTEMS INC COM COM

WESTPORT FUEL SYSTEMS INC COM COM is a security (CUSIP 960908507) tracked across SEC portfolio filings. 48 institutional managers reported $4.1M on Form 13F as of 2026-06-30; 1 registered fund positions totaling $555K via N-PORT as of 2026-03-31.

## Summary

- Issuer: WESTPORT FUEL SYSTEMS INC COM
- Class: COM
- CUSIP: 960908507
- Asset category: EC
- 13F holders: 48
- 13F value: $4.1M
- 13F period: 2026-06-30
- N-PORT fund positions: 1
- N-PORT value: $555K
- N-PORT report: 2026-03-31

## Top institutional holders (Form 13F)

_Showing 15 of 48 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [GRACE & WHITE INC /NY](https://search.stillhousedata.com/firm/110761) | NY, NY | $1.6M | 714,106 |
| [ROYCE & ASSOCIATES LP](https://search.stillhousedata.com/firm/107689) | New York, NY | $895K | 491,902 |
| [CITADEL ADVISORS LLC](https://search.stillhousedata.com/firm/148826) | MIAMI, FL | $373K | 154,905 |
| AMH Equity Ltd | NEW YORK, NY | $311K | 137,000 |
| US BANCORP \\DE\\ | MINNEAPOLIS, MN | $304K | 166,829 |
| Baird Financial Group, Inc. | MILWAUKEE, WI | $298K | 163,898 |
| GOLDMAN SACHS GROUP INC | NEW YORK, NY | $70K | 38,245 |
| JANE STREET GROUP, LLC | NEW YORK, NY | $56K | 15,193 |
| TD Waterhouse Canada Inc. | TORONTO, A6 | $38K | 18,114 |
| UBS Group AG | Zurich, V8 | $30K | 16,418 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | BALA CYNWYD, PA | $27K | — |
| [Centiva Capital, LP](https://search.stillhousedata.com/firm/286299) | New York, NY | $24K | 13,012 |
| [LPL Financial LLC](https://search.stillhousedata.com/firm/6413) | FORT MILL, SC | $18K | 10,026 |
| Royal Bank of Canada | TORONTO, A6 | $14K | 7,858 |
| MORGAN STANLEY | NEW YORK, NY | $7K | 4,061 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| ROYCE MICRO-CAP TRUST, INC. | ROYCE MICRO-CAP TRUST, INC. | $555K | 8.06% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/960908507.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.