BSAA · BEST SPAC I Acquisition Corp. · Holdings

$11.25

Market Cap

$23.35M

2.07M

Volume · Oct 5 657 Avg daily vol (3M) 10.23K

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.

Use institutional holdings through the 13F API or MCP →

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.

Quarter:

Holders: 28

Total Value: $6,892,483

Total Shares: 4,130,620

Institutional Ownership Trend

5 quarters

Holder Concentration

Across 28 13F filers · Δ vs Mar 31, 2026

Top Holder

91.9%

+79.6 pts

Top 5

100.0%

+50.2 pts

Top 10

100.0%

+28.4 pts

HHI

8,474

Highly concentrated+7,787

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: -7

Institutional value: -84.6%

Shares held: -49.7%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Large HRT FINANCIAL LP	+10,751	32,719
Mega UBS Group AG	+1,243	4,698
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP	+520	14,437

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mid WOLVERINE ASSET MANAGEMENT LLC	−669,560	212,633
Mid BERKLEY W R CORP	−509,560	91,786
Mid RIVERNORTH CAPITAL MANAGEMENT, LLC	−400,000	400,000
Large Hudson Bay Capital Management LP	−275,000	275,000
Small Radcliffe Capital Management, L.P.	−240,000	100,000

Top New Positions

vs Mar 31, 2026

No new positions this quarter.

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mid GLAZER CAPITAL, LLC	193,207	$1,982,303
Mid Karpus Management, Inc.	170,501	$1,749,340
Small L1 Global Manager Pty Ltd	50,000	$513,000
Mid Quarry LP	40,710	$417,684
Small RLH Capital LLC	40,710	$417,684

Filter: New 0 Increased 3 Reduced 21 Sold out 7 Unchanged 4

Showing 32 of 32

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

MIZUHO SECURITIES USA LLC

$6,335,007

91.91%

533,699

CITADEL ADVISORS LLC BSAAU

$300,000

4.35%

25,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	25,000	$300,000	100.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$171,367

2.49%

14,437

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
G1 EXECUTION SERVICES, LLC	14,437	$171,367	100.0%	Other

UBS Group AG

$53,177

0.77%

4,480

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Securities LLC	4,480	$53,177	100.0%	Defined

Clear Street Group Inc. BSAAU

$25,284

0.37%

2,107

Clear Street Group Inc.

$4,712

0.07%

397

UBS Group AG BSAAU

$2,604

0.04%

217

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Securities LLC	217	$2,604	100.0%	Defined

MORGAN STANLEY

$332

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY CAPITAL SERVICES, LLC	28	$332	100.0%	Defined

Centiva Capital, LP BSAAR

—

25,000

MANGROVE PARTNERS IM, LLC BSAAR

—

270,848

TORONTO DOMINION BANK BSAAR

—

87,276

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
TD SECURITIES (USA) LLC	87,276	$0	—	Defined

MMCAP International Inc. SPC BSAAR

—

125,000

Shaolin Capital Management LLC BSAAR

—

239,899

BOOTHBAY FUND MANAGEMENT, LLC BSAAR

—

162,500

Radcliffe Capital Management, L.P. BSAAR

—

100,000

BNP PARIBAS ARBITRAGE, SA BSAAR

—

35,966

HRT FINANCIAL LP BSAAR

—

32,719

Polar Asset Management Partners Inc. BSAAR

—

185,000

HEIGHTS CAPITAL MANAGEMENT, INC BSAAR

—

153,122

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
CVI Investments, Inc.	153,122	$0	—	Other

UBS Group AG BSAAR

—

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Securities LLC	1	$0	—	Defined

AQR Arbitrage LLC BSAAR

—

115,132

Clear Street Group Inc. BSAAR

—

358,203

Mint Tower Capital Management B.V. BSAAR

—

45,000

METEORA CAPITAL, LLC BSAAR

—

89,897

ARISTEIA CAPITAL, L.L.C. BSAAR

—

95,000

HIGHBRIDGE CAPITAL MANAGEMENT LLC BSAAR

—

300,273

RIVERNORTH CAPITAL MANAGEMENT, LLC BSAAR

—

400,000

Hudson Bay Capital Management LP BSAAR

—

275,000

BERKLEY W R CORP BSAAR

—

91,786

Westchester Capital Management, LLC BSAAR

—

50,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WESTCHESTER CAPITAL PARTNERS, LLC	468	$0	—	Sole
Virtus Investment Advisers, LLC	45,379	$0	—	Other
Held directly	4,153	$0	—	Sole

ADAR1 Capital Management, LLC BSAAR

—

100,000

WOLVERINE ASSET MANAGEMENT LLC BSAAR

—

212,633

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Wolverine Holdings, LLC	212,633	$0	—	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Karpus Management Inc.	37,250	$382,185	100.0%	Defined

Key facts CIK 2051587 CUSIP G1069P103