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YCY

AA Mission Acquisition Corp. II
$10.21 +0.01 (+0.10%) At close · Jul 6
Market Cap
$150.45M
Shares
11,860,250

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.

Holders: 41
Total Value: $117,025,995
Total Shares: 11,621,252

Institutional Ownership Trend

2 quarters

Holder Concentration

Across 41 13F filers · Δ vs Dec 31, 2025
Top Holder
7.2%
Dec 2025 → Mar 2026 · range 7.2% – 9.2%
−2.0 pts
Top 5
30.2%
Dec 2025 → Mar 2026 · range 30.2% – 37.0%
−6.8 pts
Top 10
52.3%
Dec 2025 → Mar 2026 · range 52.3% – 59.8%
−7.5 pts
HHI
397
Dec 2025 → Mar 2026 · range 397 – 493
Broadly held−96

Quarterly Activity

vs Dec 31, 2025
New
9
Increased
7
Decreased
8
Sold Out
2
Unchanged
17
Holder count: +7
Institutional value: +35.4%
Shares held: +33.9%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mid METEORA CAPITAL, LLC +765,360 1,565,352
Mid Westchester Capital Management, LLC +494,185 572,185
Mega MILLENNIUM MANAGEMENT LLC +200,000 300,000
Mid WOLVERINE ASSET MANAGEMENT LLC +94,347 579,734
Mid BERKLEY W R CORP +49,801 392,235

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mid MIZUHO SECURITIES USA LLC −157,007 643,039
Small Periscope Capital Inc. −50,000 250,000
Mid AQR Arbitrage LLC −16,937 536,609
Large Clear Street Group Inc. −8,050 251,467
Mega UBS Group AG −1,254 237

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mid Magnetar Financial LLC 699,994 $7,048,939
Small BlueCrest Capital Management Ltd 400,000 $4,028,000
Small HEIGHTS CAPITAL MANAGEMENT, INC 200,000 $2,014,000
Mid O'Connor Alternative Investments LLC 150,000 $1,510,500
Mid SONA ASSET MANAGEMENT (US) LLC 100,147 $1,008,479

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mid OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) 150,000 $1,494,300
Small Quarry LP 497 $4,951
Filter: New 9 Increased 7 Reduced 8 Sold out 2 Unchanged 17
Showing 42 of 42
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mid METEORA CAPITAL, LLC $7,881,547 6.73% 782,676
Mid METEORA CAPITAL, LLC $7,881,547 6.73% 782,676
Mid Magnetar Financial LLC $7,048,939 6.02% 699,994
Mid MIZUHO SECURITIES USA LLC Broker-Dealer $6,475,402 5.53% 643,039
Mid WOLVERINE ASSET MANAGEMENT LLC $5,837,921 4.99% 579,734
Mid Westchester Capital Management, LLC $5,761,901 4.92% 572,185
Mid ARISTEIA CAPITAL, L.L.C. $5,622,362 4.80% 558,328
Mid AQR Arbitrage LLC $5,403,652 4.62% 536,609
Mid WHITEBOX ADVISORS LLC $5,035,000 4.30% 500,000
Small Shaolin Capital Management LLC $4,028,000 3.44% 400,000
Large Hudson Bay Capital Management LP $4,028,000 3.44% 400,000
Small BlueCrest Capital Management Ltd $4,028,000 3.44% 400,000
Mid BERKLEY W R CORP $3,949,806 3.38% 392,235
Small Radcliffe Capital Management, L.P. $3,524,500 3.01% 350,000
Mid GLAZER CAPITAL, LLC $3,416,811 2.92% 339,306
Mega MILLENNIUM MANAGEMENT LLC $3,021,000 2.58% 300,000
Mid MANGROVE PARTNERS IM, LLC $2,690,170 2.30% 267,147
Large Clear Street Group Inc. $2,532,272 2.16% 251,467
Mid First Trust Capital Management L.P. $2,517,500 2.15% 250,000
Mid Linden Advisors LP $2,517,500 2.15% 250,000
Small Periscope Capital Inc. $2,517,500 2.15% 250,000
Mega D. E. Shaw & Co., Inc. $2,517,500 2.15% 250,000
Mega TWO SIGMA INVESTMENTS, LP $2,433,586 2.08% 241,667
Small Context Capital Management, LLC $2,014,000 1.72% 200,000
Small HEIGHTS CAPITAL MANAGEMENT, INC $2,014,000 1.72% 200,000
Large OMERS ADMINISTRATION Corp $2,014,000 1.72% 200,000
Mega BNP PARIBAS ARBITRAGE, SA $1,681,851 1.44% 167,016
Mid O'Connor Alternative Investments LLC $1,510,500 1.29% 150,000
Small Mint Tower Capital Management B.V. $1,258,750 1.08% 125,000
Mid SONA ASSET MANAGEMENT (US) LLC $1,008,479 0.86% 100,147
Mid RIVERNORTH CAPITAL MANAGEMENT, LLC $1,007,000 0.86% 100,000
Small L1 Global Manager Pty Ltd $1,007,000 0.86% 100,000
Mid Karpus Management, Inc. $666,382 0.57% 66,175
Small Crossingbridge Advisors, LLC $503,500 0.43% 50,000
Small CSS LLC/IL $503,500 0.43% 50,000
Small ABC ARBITRAGE SA $402,800 0.34% 40,000
Micro Warberg Asset Management LLC $352,319 0.30% 34,987
Mid BOOTHBAY FUND MANAGEMENT, LLC $268,929 0.23% 26,706
Mid Virtu Financial LLC $131,967 0.11% 13,105
Large TORONTO DOMINION BANK Bank $5,004 0.00% 497
Small HIGHBRIDGE CAPITAL MANAGEMENT LLC $3,212 0.00% 319
Mega UBS Group AG $2,386 0.00% 237
Key facts CIK 2075336 CUSIP G1000S109 Visit website Investor relations

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