Westport Fuel Systems

WPRT • NASDAQ

Westport Fuel Systems is a auto - parts company in the consumer cyclical sector on NASDAQ, led by William Larkin, with a market cap of $29.2M. As of Q3 2025, 13% of shares are held by 38 institutional investors, with GRACE & WHITE INC /NY as the largest holder at 6.02%.

CEOWilliam Larkin

Market Cap$29.2M

Auto - Parts

Consumer Cyclical

Employees1.7K

Websitewfsinc.com

Overview

Overview of institutional ownership in WPRT as of Q3 2025 with a market cap of $39.4M

All Institutions

Institutions: 38
Value Held: $5.1M
Shares Held: 2.2M
Avg Position: $133.5K
Median Position: $2.2K

Hedge Funds

Hedge Funds: 2
Value Held: $426.4K
Shares Held: 187.8K
Avg Position: $213.2K
Median Position: $213.2K

Ownership Breakdown

Institutional (non-HF)

11.8%

$4.6M

Hedge Funds

1.08%

$426.4K

Retail & Other

87.12%

$34.3M

Based on market cap of $39.4M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in WPRT as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
G GRACE & WHITE INC /NY RIA/Wealth	Marc Emil Ravitz President	$2.4M 0.49% of portfolio	6.02% 1.0M shares	Q4 2015 Held for 9y 11m	$481.2M
Baird Financial Group, Inc. Private Equity	Paul Lee Schultz General Counsel	$1.2M 0.00% of portfolio	3.16% 549.1K shares	Q1 2020 Held for 5y 8m	$62.0B
R ROYAL BANK OF CANADA Institution	-	$408.6K 0.00% of portfolio	1.04% 180.0K shares	≤ Q2 2013 Held for 12y 5m+	$542.04B
$US BANCORP \DE\ logo$ US BANCORP \DE\ Institution	Gunjan Kedia CEO	$378.7K 0.00% of portfolio	0.96% 166.8K shares	Q2 2016 Held for 9y 5m	$84.3B
AMH Equity Ltd Hedge Fund•Long/Short	Adam Michael Hutt President	$311.0K 0.39% of portfolio	0.79% 137.0K shares	Q2 2022 Held for 3y 5m	$78.8M
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	Kenneth Cordele Griffin CEO	$115.4K 0.00% of portfolio	0.29% 50.8K shares	Q2 2016 Held for 9y 5m	$122.08B
GOLDMAN SACHS GROUP INC Institution	David M. Solomon CEO	$71.2K 0.00% of portfolio	0.18% 31.4K shares	Q3 2020 Held for 5y 2m	$691.34B
T TD Waterhouse Canada Inc. Institution	-	$40.3K 0.00% of portfolio	0.10% 18.1K shares	Q4 2021 Held for 3y 11m	$15.4B
UBS Group AG Institution	Sergio P. Ermotti CEO	$34.8K 0.00% of portfolio	0.09% 15.3K shares	Q4 2014 Held for 10y 11m	$511.54B
Cambridge Investment Research Advisors, Inc. RIA/Wealth	Amy Lynn Webber CEO	$28.7K 0.00% of portfolio	0.07% 12.6K shares	Q4 2024 Held for 11 months	$33.5B

Net Capital Flow

Institutional buying and selling activity for WPRT in Q3 2025

Traded: +$19.6K
Buyers: 12
Sellers: 14
Total Bought: +$155.8K
Total Sold: −$136.2K
Avg Position: $108.0K

Biggest Buyers

Institution	Net Bought	Current Position
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	+$78.4K +34.6K shares	$115.4K 50.8K shares
R ROYAL BANK OF CANADA Institution	+$61.5K +27.1K shares	$408.6K 180.0K shares
Federation des caisses Desjardins du Quebec Fund of Funds	+$3.9K +1.7K shares	$4.8K 2.2K shares
GOLDMAN SACHS GROUP INC Institution	+$3.6K +1.6K shares	$71.2K 31.4K shares
G GRACE & WHITE INC /NY RIA/Wealth	+$3.0K +1.3K shares	$2.4M 1.0M shares
S SIMPLEX TRADING, LLC Institution	+$2.1K +912.0 shares	$2.1K 912.0 shares
CITIGROUP INC Institution	+$1.8K +804.0 shares	$1.8K 804.0 shares
Hanson McClain, Inc. RIA/Wealth	+$1.0K +460.0 shares	$2.3K 1.0K shares
G GROUP ONE TRADING, L.P. Institution	+$226.7 +100.0 shares	$331.0 146.0 shares
MAI Wealth Advisors RIA/Wealth	+$68.2 +30.0 shares	$75.0 33.0 shares

Biggest Sellers

Institution	Net Sold	Current Position
Baird Financial Group, Inc. Private Equity	−$51.9K −22.9K shares	$1.2M 549.1K shares
AMH Equity Ltd Hedge Fund•Long/Short	−$42.5K −18.7K shares	$311.0K 137.0K shares
Bell Investment Advisors, Inc RIA/Wealth	−$9.5K −3.0K shares	Sold Off 0 shares
B BlackRock, Inc. Institution	−$6.5K −2.1K shares	Sold Off 0 shares
Parallel Advisors, LLC RIA/Wealth	−$6.5K −2.1K shares	Sold Off 0 shares
PNC FINANCIAL SERVICES GROUP, INC. Institution	−$6.3K −2.0K shares	Sold Off 0 shares
MORGAN STANLEY RIA/Wealth	−$3.7K −1.6K shares	$9.9K 4.4K shares
T Tower Research Capital LLC Institution	−$3.0K −1.3K shares	$2.7K 1.2K shares
N NATIONAL BANK OF CANADA /FI/ Institution	−$2.6K −869.0 shares	Sold Off 0 shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	−$1.9K −826.0 shares	$23.1K 10.2K shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited WPRT in Q3 2025

New Positions: 0
New Value: -
Exited Positions: 7
Exited Value: $33.1K

New Positions

Institution	Position Value
No new positions found

Exited Positions

Institution	Previous Position
Bell Investment Advisors, Inc RIA/Wealth	$9.5K 3.0K shares
Parallel Advisors, LLC RIA/Wealth	$6.5K 2.1K shares
B BlackRock, Inc. Institution	$6.5K 2.1K shares
PNC FINANCIAL SERVICES GROUP, INC. Institution	$6.3K 2.0K shares
N NATIONAL BANK OF CANADA /FI/ Institution	$2.6K 869.0 shares
RAYMOND JAMES FINANCIAL INC RIA/Wealth	$1.1K 357.0 shares
Kiker Wealth Management, LLC RIA/Wealth	$691.0 220.0 shares

Options Activity

Institutions with the largest Call and Put options positions in WPRT as of Q3 2025

Call Positions: 1
Call Value: -
Put Positions: 1
Put Value: $39.3K

Call Positions

Institution	Position Value
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	- - contracts

Put Positions

Institution	Position Value
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$39.3K 173.0 contracts

Most Committed Institutions

Institutions with WPRT as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
G GRACE & WHITE INC /NY RIA/Wealth	Marc Emil Ravitz President	0.49% $2.4M	6.02% 1.0M shares	Q4 2015 Held for 9y 11m	$481.2M
AMH Equity Ltd Hedge Fund•Long/Short	Adam Michael Hutt President	0.39% $311.0K	0.79% 137.0K shares	Q2 2022 Held for 3y 5m	$78.8M
Baird Financial Group, Inc. Private Equity	Paul Lee Schultz General Counsel	0.00% $1.2M	3.16% 549.1K shares	Q1 2020 Held for 5y 8m	$62.0B
VSM Wealth Advisory, LLC RIA/Wealth	Robert Frank Mewshaw President	0.00% $5.3K	0.01% 2.4K shares	Q4 2024 Held for 11 months	$318.3M
S SWAN Capital LLC RIA/Wealth	Andrew Scott Mcnair CCO	0.00% $2.3K	0.01% 1.0K shares	Q2 2024 Held for 1y 5m	$246.6M
$US BANCORP \DE\ logo$ US BANCORP \DE\ Institution	Gunjan Kedia CEO	0.00% $378.7K	0.96% 166.8K shares	Q2 2016 Held for 9y 5m	$84.3B
H HighMark Wealth Management LLC RIA/Wealth	Todd Edward Arens Managing Partner	0.00% $795.0	0.00% 350.0 shares	Q4 2021 Held for 3y 11m	$227.1M
T TD Waterhouse Canada Inc. Institution	-	0.00% $40.3K	0.10% 18.1K shares	Q4 2021 Held for 3y 11m	$15.4B
ORG Partners LLC RIA/Wealth	Todd Jeffrey Stewart CEO	0.00% $908.0	0.00% 400.0 shares	Q3 2023 Held for 2y 2m	$521.1M
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	Kenneth Cordele Griffin CEO	0.00% $115.4K	0.29% 50.8K shares	Q2 2016 Held for 9y 5m	$122.08B

Hedge Fund Spotlight

Discover hedge funds investing in WPRT

CITADEL ADVISORS LLC

Hedge Fund • Multi-Strategy

Portfolio ManagerKenneth Cordele Griffin

Portfolio Value: $122.08B
Positions: 5,531
Last Reported: Q3 2025

Sector Allocation

Position in Westport Fuel Systems

Market Value: $115.4K
Shares Held: 50.8K
Portfolio Weight: 0.00%
Owned Since: 2016-Q2

Top Holding	Sector	Market Value	Weight
1 Microsoft MSFT	Software - Infrastructure Technology	$2.1B	1.68%
2 Nvidia NVDA	Semiconductors Technology	$1.8B	1.50%
3 Meta Platforms, Inc. META	Internet Content & Information Communication Services	$1.4B	1.18%