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.

Berto Acquisition Corp.

CIK 0002033122TACOTACOUTACOW· quarter ending 2026-06-30

Shares outstanding

37,518,750

as of 2026-08-14 · 10-Q cover page, filed 2026-08-14

Held by 13F filers

304,472

selection includes debt or preferreds — no % of shares outstanding

Holders

-2 vs 2026-03-31 · 0 new, 2 exited

Value

$3.3M

shares +7.2% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-14, as of 2026-08-14)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	TACO · NASDAQ	37,518,750	28,530,922	76.0%	63	G1051H101

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

CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
G1051H101	COM	63	28,530,922	37,518,750	76.0%	$299.1M	—	13DG	holders →
G1051H119	COMnot common	48	12,243,895 $244K principal	—	—	$9.2M	1 call / 0 put	NPORT	holders →
G1051H127	UNIT 99/99/9999not common	4	304,472	—	—	$3.3M	—	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 (4 of 4 · G1051H127)

change vs 2026-03-31

#	Filer	Shares / principal	% of class	Value	Change
1	Clear Street Group Inc.	180,032	—	$1.9M	+79,306 (+78.7%)
2	OMERS ADMINISTRATION Corp	57,712	—	$622K	—
3	JPMORGAN CHASE & CO	50,000	—	$539K	—
4	CITADEL ADVISORS LLC	16,728	—	$180K	-7,352 (-30.5%)

Exited since 2026-03-31 (2 filers; largest 2 shown)

HRT FINANCIAL LP	−40,196
SUSQUEHANNA INTERNATIONAL GROUP, LLP	−11,238

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.

Reporting person	Form	Filed	Event	Shares	% of class
Berto Acquisition Sponsor LLC	SCHEDULE 13G	2025-08-14	2025-06-30	2,688,300	7.2%
Harry L. You	SCHEDULE 13G	2025-08-14	2025-06-30	5,089,500	13.6%
Robert You	SCHEDULE 13G	2025-08-14	2025-06-30	2,101,050	5.6%

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.