WPRT · Westport Fuel Systems Inc. · Holdings

$1.84 +0.08 (+4.55%) At close · Sep 11

Market Cap

$34.95M

19.00M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →

Quarter:

Holders: 44

Total Value: $8,310,997

Total Shares: 3,677,441

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 44 13F filers · Δ vs Mar 31, 2026

Top Holder

36.0%

−9.5 pts

Top 5

93.3%

+1.3 pts

Top 10

97.9%

+0.6 pts

HHI

2,654

Highly concentrated−117

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +1

Institutional value: +106.4%

Shares held: +66.2%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Large ROYCE & ASSOCIATES LP	+639,577	1,131,479
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP	+3,317	18,017
Mega UBS Group AG	+2,898	19,316
Mega LPL Financial LLC	+1,254	11,280
Mid GROUP ONE TRADING LLC	+1,100	1,997

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Small GRACE & WHITE INC /NY	−292,602	714,106
Large US BANCORP \DE\	−93,721	73,108
Mega CITADEL ADVISORS LLC	−85,646	119,559
Large Baird Financial Group, Inc.	−23,874	140,024
Mega GOLDMAN SACHS GROUP INC	−6,598	31,647

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Small HEIGHTS CAPITAL MANAGEMENT, INC	1,325,121	$2,994,773
Large HRT FINANCIAL LP	13,318	$30,098
Mid SIMPLEX TRADING, LLC	1,604	$3,625
Small Core Capital Management & Research, inc.	139	$314
Large BROWN BROTHERS HARRIMAN & CO	10	$22

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mid Centiva Capital, LP	13,012	$23,681
Large FIFTH THIRD BANCORP	170	$309
Mega NATIONAL BANK OF CANADA /FI/	124	$225
Large MAI Capital Management	33	$60
Large CWM, LLC	11	$20

Filter: New 6 Increased 7 Reduced 13 Sold out 5 Unchanged 18

Showing 47 of 47

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

HEIGHTS CAPITAL MANAGEMENT, INC

$2,994,773

36.03%

1,325,121

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
CVI Investments, Inc.	1,325,121	$2,994,773	100.0%	Other

ROYCE & ASSOCIATES LP

$2,557,142

30.77%

1,131,479

GRACE & WHITE INC /NY

$1,613,879

19.42%

714,106

Baird Financial Group, Inc.

$316,454

3.81%

140,024

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Robert W. Baird & Co. Inc	140,024	$316,454	100.0%	Defined

CITADEL ADVISORS LLC

$203,307

2.45%

89,959

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	89,959	$203,307	100.0%	Defined

US BANCORP \DE\

$165,224

1.99%

73,108

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
US BANK NATIONAL ASSOCIATION	73,108	$165,224	100.0%	Defined

GOLDMAN SACHS GROUP INC

$71,522

0.86%

31,647

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	31,647	$71,522	100.0%	Defined

UBS Group AG

$43,653

0.53%

19,316

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	127	$287	0.7%	Defined
UBS AG	15,193	$34,336	78.7%	Defined
UBS Securities LLC	3,996	$9,030	20.7%	Defined

CITADEL ADVISORS LLC

$43,392

0.52%

19,200

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	19,200	$43,392	100.0%	Defined

TD Waterhouse Canada Inc.

$40,937

0.49%

18,114

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
TORONTO DOMINION BANK	18,114	$40,937	100.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$40,718

0.49%

18,017

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	18,017	$40,718	100.0%	Other

JANE STREET GROUP, LLC

$31,488

0.38%

13,933

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	13,224	$29,886	94.9%	Defined
Jane Street Global Trading, LLC	709	$1,602	5.1%	Defined

JANE STREET GROUP, LLC

$30,962

0.37%

13,700

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	13,700	$30,962	100.0%	Defined

HRT FINANCIAL LP

$30,098

0.36%

13,318

Cambridge Investment Research Advisors, Inc.

$26,512

0.32%

11,731

LPL Financial LLC

$25,492

0.31%

11,280

CITADEL ADVISORS LLC

$23,504

0.28%

10,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	10,400	$23,504	100.0%	Defined

ROYAL BANK OF CANADA

$13,510

0.16%

5,978

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC Capital Markets, LLC	5,000	$11,300	83.6%	Defined
RBC Dominion Securities Inc.	878	$1,984	14.7%	Defined
RBC Private Counsel (USA) Inc.	100	$226	1.7%	Defined

MORGAN STANLEY

$8,526

0.10%

3,773

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Morgan Stanley Canada LTD	215	$485	5.7%	Defined
MORGAN STANLEY SMITH BARNEY LLC	3,558	$8,041	94.3%	Defined

Tower Research Capital LLC (TRC)

$5,842

0.07%

2,585

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	2,585	$5,842	100.0%	Defined

GROUP ONE TRADING LLC

$4,513

0.05%

1,997

WELLS FARGO & COMPANY/MN

$3,923

0.05%

1,736

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	1,459	$3,297	84.0%	Defined
WELLS FARGO CLEARING SERVICES, LLC	277	$626	16.0%	Defined

SIMPLEX TRADING, LLC

$3,625

0.04%

1,604

Allworth Financial LP

$2,316

0.03%

1,025

SWAN Capital LLC

$2,260

0.03%

1,000

JONES FINANCIAL COMPANIES LLLP

$1,604

0.02%

710

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Edward D. Jones & Co., L.P.	710	$1,604	100.0%	Sole

OSAIC HOLDINGS, INC.

$1,317

0.02%

583

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	583	$1,317	100.0%	Defined

Ascentis Wealth Management, LLC

$904

0.01%

400

HighMark Wealth Management LLC

$791

0.01%

350

Federation des caisses Desjardins du Quebec

$785

0.01%

348

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Desjardins Securities inc.	23	$51	6.5%	Defined
Held directly	325	$734	93.5%	Defined

COUNTRY TRUST BANK

$497

0.01%

220

DEUTSCHE BANK AG\

$415

0.00%

184

Core Capital Management & Research, inc.

$314

0.00%

139

Gen-Wealth Partners Inc

$194

0.00%

THOMPSON INVESTMENT MANAGEMENT, INC.

$135

0.00%

CBIZ Investment Advisory Services, LLC

$101

0.00%

SBI Securities Co., Ltd.

$79

0.00%

Golden State Wealth Management, LLC

$67

0.00%

Rockefeller Capital Management L.P.

$67

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
ROCKEFELLER FINANCIAL LLC	30	$67	100.0%	Defined

HARBOUR INVESTMENTS, INC.

$61

0.00%

DELTA ASSET MANAGEMENT LLC/TN

$33

0.00%

Avalon Trust Co

$29

0.00%

BROWN BROTHERS HARRIMAN & CO

$22

0.00%

Caitong International Asset Management Co., Ltd

0.00%

TSFG, LLC

0.00%

Robinswood Financial LLC

0.00%

CALDWELL SUTTER CAPITAL, INC.

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fifth Third Bank, National Association	170	$309	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
National Bank Financial Inc.	124	$225	100.0%	Defined

Key facts CIK 1370416 CUSIP 960908507 13F (30d) 14 filings 14 filers Visit website