Horizon Space Acquisition II Corp. (HSPT) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

6,613,183Shares Outstanding

2,402,099Shares held by institutions

$28,825,188Value of institutional holdings

93.12%Institutional ownership %

-3.34%Shares Changed QoQ

22No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

According to SEC filings for the period ending December 2025, Horizon Space Acquisition II Corp. (NASDAQ:HSPT) is held by 22 institutional firms.

The percentage of Horizon Space Acquisition owned by institutions changed from 105.0% in September 2025 to 93.1% in December 2025, marking a slight down trend.
The company experienced a -3.34% quarterly change in institutional shares held, alongside an unavailable change in total owners annually.
Of these 22 institutional investors, 7 increased their holdings in Horizon Space Acquisition, while 7 of them reduced positions, and 8 investors maintained their exposure.
The total number of shares held by institutions in Horizon Space Acquisition decreased to 6.16Mn as of December 2025, a net change of down by 212.89K shares quarter on quarter, and down N/A shares year over year.
BERKLEY W R CORP's holding of 722.01K shares as of December 31, 2025 makes it the primary institutional investor in Horizon Space Acquisition, owning 10.92% of the stock.
Among the most significant buyers of Horizon Space Acquisition during December 2025 were RIVERNORTH CAPITAL MANAGEMENT, LLC (165.00K), L1 Global Manager Pty Ltd (150.00K), MIZUHO SECURITIES USA LLC (61.15K), Clear Street Group Inc. (8.63K), Quarry LP (4.96K).
Leading sellers of Horizon Space Acquisition stock in December 2025 included Polar Asset Management Partners Inc. (525.00K), TORONTO DOMINION BANK (28.39K), HEIGHTS CAPITAL MANAGEMENT, INC (20.00K), WOLVERINE ASSET MANAGEMENT LLC (15.04K), GLAZER CAPITAL, LLC (12.75K).
The top 10 institutional holders of Horizon Space Acquisition for the quarter ending December 2025 included BERKLEY W R CORP (722.01K), MIZUHO SECURITIES USA LLC (696.14K), WOLVERINE ASSET MANAGEMENT LLC (641.15K), RIVERNORTH CAPITAL MANAGEMENT, LLC (592.40K), BOOTHBAY FUND MANAGEMENT, LLC (574.99K), Polar Asset Management Partners Inc. (525.00K), AQR Arbitrage LLC (414.35K), Westchester Capital Management, LLC (404.90K), Hudson Bay Capital Management LP (400.00K), D. E. Shaw & Co., Inc. (250.00K).

22 Institutional Holders

2,402,099 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BERKLEY W R CORP	31 Dec, 2025	722,015	-288	-0.04%	$7,610,038.00
MIZUHO SECURITIES USA LLC	31 Dec, 2025	696,145	61,145	9.63%	$7,178,680.00
WOLVERINE ASSET MANAGEMENT LLC	31 Dec, 2025	641,151	-15,038	-2.29%	$6,757,732.00
RIVERNORTH CAPITAL MANAGEMENT, LLC	31 Dec, 2025	592,400	165,000	38.61%	$6,243,896.00
BOOTHBAY FUND MANAGEMENT, LLC	31 Dec, 2025	574,990	0	0.00%	$6,063,270.00
Polar Asset Management Partners Inc.	31 Dec, 2025	525,000	-525,000	-50.00%	$5,536,125.00
AQR Arbitrage LLC	31 Dec, 2025	414,354	0	0.00%	$4,367,291.00
Westchester Capital Management, LLC	31 Dec, 2025	404,900	0	0.00%	$4,267,646.00
Hudson Bay Capital Management LP	31 Dec, 2025	400,000	0	0.00%	$4,216,000.00
D. E. Shaw & Co., Inc.	31 Dec, 2025	250,000	0	0.00%	$2,635,000.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	217,499	0	0.00%	$2,292,439.00
TORONTO DOMINION BANK	31 Dec, 2025	191,614	-28,386	-12.90%	$2,020,570.00
GLAZER CAPITAL, LLC	31 Dec, 2025	162,346	-12,753	-7.28%	$1,711.00
L1 Global Manager Pty Ltd	31 Dec, 2025	150,000	150,000	0.00%	$1,581,750.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	125,339	0	0.00%	$1,321,073.00
Clear Street Group Inc.	31 Dec, 2025	47,072	8,632	22.46%	$496,374.00
HEIGHTS CAPITAL MANAGEMENT, INC	31 Dec, 2025	20,000	-20,000	-50.00%	$210,800.00
Radcliffe Capital Management, L.P.	31 Dec, 2025	15,017	0	0.00%	$158,655.00
Quarry LP	31 Dec, 2025	4,957	4,957	0.00%	$52,371.00
UBS Group AG	31 Dec, 2025	2,990	-1,204	-28.71%	$31,515.00

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