Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

Hydro One Ltd

CIK 0001712356HRNNFHYNLY· quarter ending 2026-06-30

Shares outstanding

599,781,811

as of 2025-12-31 · 40-F cover page, filed 2026-02-13

Held by 13F filers

29,700

0.0% of shares outstanding

Holders

+0 vs 2026-03-31 · 0 new, 0 exited

Value

$1.2M

shares +0.0% vs prior quarter

Share classes (cover page of the 40-F filed 2026-02-13, as of 2025-12-31)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	—	599,781,811	29,700	0.0%	1	448811208

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

Count	CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
	448811208	COM	1	29,700	599,781,811	0.0%	$1.2M	—	NPORT	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings.

Top holders (1 of 1 · 448811208)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	JOHN G ULLMAN & ASSOCIATES INC	29,700	0.00%	$1.2M	—

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

No structured 13D/13G filings (XML filings began Dec 2024).

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.