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.

AA Mission Acquisition Corp. II

CIK 0002075336YCYYCY-UNYCY-WT· quarter ending 2026-06-30

Shares outstanding

11,860,250

as of 2026-08-07 · 10-Q cover page, filed 2026-08-07

Held by 13F filers

11,463,301

96.7% of shares outstanding

Holders

-2 vs 2026-03-31 · 0 new, 2 exited

Value

$116.4M

shares +5.8% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-07, as of 2026-08-07)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	YCY · NYSE	11,860,250	11,463,301	96.7%	39	G1000S109

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
G1000S109	ORD SHS CL A	39	11,463,301	11,860,250	96.7%	$116.4M	—	13DG	holders →
G1000S117	Unitnot common	6	702,198	—	—	$7.2M	—	13DG	holders →
G1000S125	*W EXP 07/23/203not common	28	4,356,075	—	—	$1.5M	1 call / 0 put	prefix	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 (39 of 39 · G1000S109)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	MIZUHO SECURITIES USA LLC	1,331,207	11.22%	$13.4M	+688,168 (+107.0%)
2	Magnetar Financial LLC	699,994	5.90%	$7.1M	—
3	WOLVERINE ASSET MANAGEMENT LLC	600,048	5.06%	$6.1M	+20,314 (+3.5%)
4	Westchester Capital Management, LLC	572,185	4.82%	$5.8M	—
5	ARISTEIA CAPITAL, L.L.C.	558,328	4.71%	$5.7M	—
6	AQR Arbitrage LLC	536,609	4.52%	$5.5M	—
7	WHITEBOX ADVISORS LLC	500,000	4.22%	$5.1M	—
8	HIGHBRIDGE CAPITAL MANAGEMENT LLC	452,645	3.82%	$4.6M	+452,326 (+141795.0%)
9	BlueCrest Capital Management Ltd	400,000	3.37%	$4.1M	—
10	Hudson Bay Capital Management LP	400,000	3.37%	$4.1M	—
11	BERKLEY W R CORP	392,235	3.31%	$4.0M	—
12	Radcliffe Capital Management, L.P.	350,000	2.95%	$3.6M	—
13	GLAZER CAPITAL, LLC	339,306	2.86%	$3.4M	—
14	Shaolin Capital Management LLC	339,038	2.86%	$3.4M	-60,962 (-15.2%)
15	MILLENNIUM MANAGEMENT LLC	300,000	2.53%	$3.0M	—
16	Crossingbridge Advisors, LLC	300,000	2.53%	$3.0M	+250,000 (+500.0%)
17	MANGROVE PARTNERS IM, LLC	267,147	2.25%	$2.7M	—
18	Linden Advisors LP	250,000	2.11%	$2.5M	—
19	Periscope Capital Inc.	250,000	2.11%	$2.5M	—
20	First Trust Capital Management L.P.	250,000	2.11%	$2.5M	—
21	D. E. Shaw & Co., Inc.	250,000	2.11%	$2.5M	—
22	TWO SIGMA INVESTMENTS, LP	241,667	2.04%	$2.5M	—
23	HEIGHTS CAPITAL MANAGEMENT, INC	200,000	1.69%	$2.0M	—
24	Context Capital Management, LLC	200,000	1.69%	$2.0M	—
25	OMERS ADMINISTRATION Corp	200,000	1.69%	$2.1M	—
26	Clear Street Group Inc.	187,667	1.58%	$1.9M	-63,800 (-25.4%)
27	BNP PARIBAS FINANCIAL MARKETS	167,016	1.41%	$1.7M	—
28	O'Connor Alternative Investments LLC	150,000	1.26%	$1.5M	—
29	Meteora Capital, LLC	136,289	1.15%	$1.4M	-646,387 (-82.6%)
30	Mint Tower Capital Management B.V.	125,000	1.05%	$1.3M	—
31	SONA ASSET MANAGEMENT (US) LLC	100,147	0.84%	$1.0M	—
32	RIVERNORTH CAPITAL MANAGEMENT, LLC	100,000	0.84%	$1.0M	—
33	L1 Global Manager Pty Ltd	100,000	0.84%	$1.0M	—
34	Karpus Management, Inc.	84,075	0.71%	$854K	+17,900 (+27.0%)
35	CSS LLC/IL	36,789	0.31%	$374K	-13,211 (-26.4%)
36	ABC ARBITRAGE SA	35,000	0.30%	$356K	-5,000 (-12.5%)
37	Warberg Asset Management LLC	34,987	0.29%	$355K	—
38	BOOTHBAY FUND MANAGEMENT, LLC	25,683	0.22%	$261K	-1,023 (-3.8%)
39	UBS Group AG	239	0.00%	$2K	+2 (+0.8%)

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

Virtu Financial LLC	−13,105
TORONTO DOMINION BANK	−497

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
Christopher L. Gust	SCHEDULE 13G/A	2026-10-06	2026-09-30	365,482	3.08%
Robert R. Bellick	SCHEDULE 13G/A	2026-10-06	2026-09-30	365,482	3.08%
Wolverine Asset Management, LLC	SCHEDULE 13G/A	2026-10-06	2026-09-30	365,482	3.08%
Wolverine Holdings, LLC	SCHEDULE 13G/A	2026-10-06	2026-09-30	365,482	3.08%
Meteora Capital, LLC	SCHEDULE 13G/A	2026-08-14	2026-06-30	136,289	1.15%
Mizuho Financial Group, Inc.	SCHEDULE 13G/A	2026-05-14	2026-03-31	643,039	5.4%
DAVID J. SNYDERMAN	SCHEDULE 13G	2026-02-17	2025-12-31	700,000	5.9%
MAGNETAR CAPITAL PARTNERS LP	SCHEDULE 13G	2026-02-17	2025-12-31	700,000	5.9%
MAGNETAR FINANCIAL LLC	SCHEDULE 13G	2026-02-17	2025-12-31	700,000	5.9%
SUPERNOVA MANAGEMENT LLC	SCHEDULE 13G	2026-02-17	2025-12-31	700,000	5.9%

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.