SDHIR · Siddhi Acquisition Corp (Cayman Islands) · Shareholders & Ownership

$0.11 At close · Oct 21

Market Cap

$367.89M

34.84M

Volume · Oct 21 103.47K Avg daily vol (18 sessions) 46.9K

Every disclosed holder of SDHIR in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns SDHIR

13F quarter Jun 30, 2026; this listing alone: insiders and shares outstanding are issuer-wide, so they are left out

No chart: shares outstanding cannot be set against these holders.

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	37	25,722,273	—	Yes
Insiders (Forms 3, 4, 5)	0	0	—	Yes
13D/G-only blocks	0	0	—	Yes
Registered funds (N-PORT, not summed)	1	2,372	—	No

% Out is unavailable: shares outstanding is an issuer-wide count, not one listing's.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of SDHIR

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 13F CIK 1535845 · Non-US institution · Jun 30, 2026	2,400,000	—	0	Jun 30, 2026
2	Linden Advisors LP 13F CIK 1279396 · Registered investment adviser · Jun 30, 2026	2,000,000	—	0	Jun 30, 2026
3	Magnetar Financial LLC 13F CIK 1352851 · Registered investment adviser · Jun 30, 2026	1,750,000	—	0	Jun 30, 2026
4	ARISTEIA CAPITAL, L.L.C. 13F CIK 1080171 · Registered investment adviser · Jun 30, 2026	1,650,000	—	0	Jun 30, 2026
5	Sculptor Capital LP 13F CIK 1054587 · Registered investment adviser · Jun 30, 2026	1,648,895	—	0	Jun 30, 2026
6	TENOR CAPITAL MANAGEMENT Co., L.P. 13F CIK 1346554 · Registered investment adviser · Jun 30, 2026	1,374,599	—	0	Jun 30, 2026
7	Polar Asset Management Partners Inc. 13F CIK 1326389 · Registered investment adviser · Jun 30, 2026	1,350,000	—	0	Jun 30, 2026
8	AQR Arbitrage LLC 13F CIK 1167456 · Registered investment adviser · Jun 30, 2026	1,316,343	—	+10,945	Jun 30, 2026
9	HGC Investment Management Inc. 13F CIK 1711200 · Non-US institution · Jun 30, 2026	1,250,000	—	0	Jun 30, 2026
10	Verition Fund Management LLC 13F CIK 1454027 · Registered investment adviser · Jun 30, 2026	1,136,924	—	-99,420	Jun 30, 2026
11	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026	995,000	—	0	Jun 30, 2026
12	METEORA CAPITAL, LLC 13F CIK 1905106 · Investment adviser · Jun 30, 2026	763,161	—	-5,900	Jun 30, 2026
13	Calamos Advisors LLC 13F CIK 1316507 · Registered investment adviser · Jun 30, 2026	750,000	—	+750,000	Jun 30, 2026
14	Alberta Investment Management Corp 13F CIK 1463559 · Non-US institution · Jun 30, 2026	700,000	—	0	Jun 30, 2026
15	Hudson Bay Capital Management LP 13F CIK 1393825 · Registered investment adviser · Jun 30, 2026	547,305	—	-2,695	Jun 30, 2026
16	Periscope Capital Inc. 13F CIK 1695320 · Exempt reporting adviser · Jun 30, 2026	500,000	—	0	Jun 30, 2026
17	PICTON MAHONEY ASSET MANAGEMENT 13F CIK 1539041 · Non-US institution · Jun 30, 2026	500,000	—	0	Jun 30, 2026
18	HIGHBRIDGE CAPITAL MANAGEMENT LLC 13F CIK 919185 · Registered investment adviser · Jun 30, 2026	448,959	—	-34,707	Jun 30, 2026
19	Shaolin Capital Management LLC 13F CIK 1766806 · Registered investment adviser · Jun 30, 2026	432,335	—	+7,335	Jun 30, 2026
20	BNP PARIBAS ARBITRAGE, SA 13F CIK 1166588 · Non-US institution · Jun 30, 2026	412,987	—	0	Jun 30, 2026
21	COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 13F CIK 1083190 · Unknown · Jun 30, 2026	400,000	—	0	Jun 30, 2026
22	RIVERNORTH CAPITAL MANAGEMENT, LLC 13F CIK 1447578 · Registered investment adviser · Jun 30, 2026	399,872	—	0	Jun 30, 2026
23	TORONTO DOMINION BANK 13F CIK 947263 · Bank · Jun 30, 2026	378,446	—	+38,446	Jun 30, 2026
24	Radcliffe Capital Management, L.P. 13F CIK 1218275 · Registered investment adviser · Jun 30, 2026	377,295	—	0	Jun 30, 2026
25	HBK INVESTMENTS L P 13F CIK 1011443 · Registered investment adviser · Jun 30, 2026	300,000	—	0	Jun 30, 2026
26	MOORE CAPITAL MANAGEMENT, LP 13F CIK 1448574 · Registered investment adviser · Jun 30, 2026	300,000	—	0	Jun 30, 2026
27	Clear Street Group Inc. 13F CIK 1881567 · Unknown · Jun 30, 2026	282,077	—	-503	Jun 30, 2026
28	Alpine Global Management, LLC 13F CIK 1581655 · Unknown · Jun 30, 2026	275,000	—	+275,000	Jun 30, 2026
29	GLAZER CAPITAL, LLC 13F CIK 1076809 · Registered investment adviser · Jun 30, 2026	248,100	—	0	Jun 30, 2026
30	Harraden Circle Investments, LLC 13F CIK 1910592 · Registered investment adviser · Jun 30, 2026	208,079	—	0	Jun 30, 2026
31	K2 PRINCIPAL FUND, L.P. 13F CIK 1461790 · Unknown · Jun 30, 2026	138,991	—	0	Jun 30, 2026
32	Context Capital Management, LLC 13F CIK 1301396 · Registered investment adviser · Jun 30, 2026	100,000	—	0	Jun 30, 2026
33	READYSTATE ASSET MANAGEMENT LP 13F CIK 1900923 · Registered investment adviser · Jun 30, 2026	100,000	—	0	Jun 30, 2026
34	BERKLEY W R CORP 13F CIK 11544 · Insurance company · Jun 30, 2026	93,212	—	-31,638	Jun 30, 2026
35	Schonfeld Strategic Advisors LLC 13F CIK 1665241 · Registered investment adviser · Jun 30, 2026	88,758	—	0	Jun 30, 2026
36	DLD Asset Management, LP 13F CIK 1578299 · Registered investment adviser · Jun 30, 2026	74,667	—	0	Jun 30, 2026
37	Centiva Capital, LP 13F CIK 1692507 · Registered investment adviser · Jun 30, 2026	31,268	—	0	Jun 30, 2026
38	Rivernorth Enhanced Pre-Merger SPAC ETF Fund S000092118 · Registered fund · Jun 30, 2026 Elevation Series Trust, not summed	2,372	—	0	Jun 30, 2026	Elevation Series Trust, not summed

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Key facts CIK 2034037 CUSIP G8118C124