Horizon Space Acquisition II Corp. (HSPT) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

9,080,000Shares Outstanding

6,283,212Shares held by institutions

$37,447,944Value of institutional holdings

69.20%Institutional ownership %

-7.47%Shares Changed QoQ

22No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Horizon Space Acquisition II Corp. (NASDAQ:HSPT) showed up in the 13F filings of 22 institutional investors as of December 2025.

These investors held 67.8% of outstanding shares in December 2025, down from 81.1% in September 2025.
Their total shares held in HSPT decreased -9.32% quarter over quarter, and separately, investors owning Horizon Space Acquisition stayed flat from a year ago.
Of these 22 holders, 7 added to their stakes in Horizon Space Acquisition, 8 trimmed positions, and 7 made no changes.
Altogether, these fund groups held 6.16Mn shares in HSPT by December 2025, down by 632.89K shares quarter on quarter, and with no net change year over year.
As of December 31, 2025, the biggest holder of Horizon Space Acquisition is Berkley W R Corp at 722.02K shares, representing 7.95% of shares outstanding.
Leading buyers of Horizon Space Acquisition shares for the quarter ending December 2025 were RIVERNORTH CAPITAL MANAGEMENT, LLC (165.0K), L1 Global Manager Pty Ltd (150.0K), Goldman Sachs Group Inc (125.34K), MIZUHO SECURITIES USA LLC (61.14K), Clear Street Group Inc. (8.63K).
Leading sellers of Horizon Space Acquisition shares for the quarter ending December 2025 were Polar Asset Management Partners Inc. (525.0K), Hudson Bay Capital Management LP (400.0K), HEIGHTS CAPITAL MANAGEMENT, INC (40.0K), Toronto Dominion Bank (28.39K), WOLVERINE ASSET MANAGEMENT LLC (15.04K).
Per Business Quant data, the top 10 holders of Horizon Space Acquisition for the quarter ending December 2025 are Berkley W R Corp (722.02K), MIZUHO SECURITIES USA LLC (696.14K), WOLVERINE ASSET MANAGEMENT LLC (641.15K), RIVERNORTH CAPITAL MANAGEMENT, LLC (592.4K), BOOTHBAY FUND MANAGEMENT, LLC (574.99K), Polar Asset Management Partners Inc. (525.0K), AQR Arbitrage LLC (414.35K), Westchester Capital Management, LLC (404.9K), Hudson Bay Capital Management LP (400.0K), Goldman Sachs Group Inc (250.68K).

22 Institutional Holders

6,283,212 Total Shares Held

Rows:

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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	-400,000	-50.00%	$4,216,000.00
Goldman Sachs Group Inc	31 Dec, 2025	250,678	125,339	100.00%	$2,642,146.00
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
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	-40,000	-66.67%	$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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