StoneBridge Acquisition II Corp - Units, each consisting of one Class A Ordinary Share, par value $0.0001 per share, and one Right to acquire one-tenth of one Class A Ordinary Share (APACU) Institutional Ownership

13F Institutional Holders and Ownership History from Q3 2025 to Q4 2025

Type / Class
Equity / Units, each consisting of one Class A Ordinary Share, par value $0.0001 per share, and one Right to acquire one-tenth of one Class A Ordinary Share
Symbol
APACU on Nasdaq
Shares outstanding
6,131,099
Price per share
$10.17
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
1,213,215
Total reported value
$12,180,322
% of total 13F portfolios
0%
Share change
-3,959,045
Value change
-$39,482,772
Number of holders
11
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of StoneBridge Acquisition II Corp - Units, each consisting of one Class A Ordinary Share, par value $0.0001 per share, and one Right to acquire one-tenth of one Class A Ordinary Share (APACU) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
MIZUHO FINANCIAL GROUP INC 9% $5,548,153 552,055 Mizuho Financial Group, Inc. 31 Dec 2025
GLAZER CAPITAL, LLC 6.6% -17% $4,091,405 +$71,405 407,105 +1.8% Glazer Capital, LLC 31 Dec 2025
AQR CAPITAL MANAGEMENT LLC 6.1% 375,000 AQR Capital Management, LLC 30 Sep 2025
Shaolin Capital Management LLC 6.3% 370,000 Shaolin Capital Management LLC 30 Sep 2025

As of 31 Dec 2025, 11 institutional investors reported holding 1,213,215 shares of StoneBridge Acquisition II Corp - Units, each consisting of one Class A Ordinary Share, par value $0.0001 per share, and one Right to acquire one-tenth of one Class A Ordinary Share (APACU). This represents 20% of the company’s total 6,131,099 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of StoneBridge Acquisition II Corp - Units, each consisting of one Class A Ordinary Share, par value $0.0001 per share, and one Right to acquire one-tenth of one Class A Ordinary Share (APACU) together control 20% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
RIVERNORTH CAPITAL MANAGEMENT, LLC 8.1% 494,517 -0.1% 0.23% $4,960,005
MANGROVE PARTNERS IM, LLC 3.7% 225,000 +80% 0.18% $2,259,000
TORONTO DOMINION BANK 2% 122,316 +22% 0% $1,228,053
Crossingbridge Advisors, LLC 1.2% 75,000 -40% 0.22% $753,000
Yakira Capital Management, Inc. 1.1% 65,000 0% 0.22% $652,600
Sandia Investment Management LP 0.98% 60,000 0% 1.5% $602,400
Quarry LP 0.98% 60,000 0% 0.15% $603,600
HEIGHTS CAPITAL MANAGEMENT, INC 0.82% 50,500 +1% 0.19% $509,040
Lineage Point Capital LP 0.65% 39,800 0% 0.15% $400,388
CITADEL ADVISORS LLC 0.23% 14,310 0% $144,245
Clear Street Group Inc. 0.11% 6,772 -97% 0% $67,991
METEORA CAPITAL, LLC 0% 0 -100% $0
AQR Arbitrage LLC 0% 0 -100% $0
Polar Asset Management Partners Inc. 0% 0 -100% $0
BOOTHBAY FUND MANAGEMENT, LLC 0% 0 -100% $0
WOLVERINE ASSET MANAGEMENT LLC 0% 0 -100% $0
MIZUHO SECURITIES USA LLC 0% 0 -100% $0
HIGHBRIDGE CAPITAL MANAGEMENT LLC 0% 0 -100% $0
JPMORGAN CHASE & CO 0% 0 -100% $0
StoneX Group Inc. 0% 0 -100% $0
Warberg Asset Management LLC 0% 0 -100% $0
Decagon Asset Management LLP 0% 0 -100% $0
Radcliffe Capital Management, L.P. 0% 0 -100% $0
Glazer Capital, LLC 0% 0 -100% $0
Verition Fund Management LLC 0% 0 -100% $0

Institutional Holders of StoneBridge Acquisition II Corp - Units, each consisting of one Class A Ordinary Share, par value $0.0001 per share, and one Right to acquire one-tenth of one Class A Ordinary Share (APACU) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 1,213,215 $12,180,322 -$39,482,772 $10.04 11
2025 Q3 5,394,860 $53,794,688 +$51,758,934 $9.97 33