ILLU · Illumination Acquisition Corp. I · Shareholders & Ownership

$9.98

Market Cap

$311.98M

31.29M

Volume · Oct 22 496.79K Avg daily vol (3M) 110.19K

Every disclosed holder of ILLU 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 ILLU

13F quarter Jun 30, 2026

No chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	55	25,969,128	82.99%	Yes
Insiders (Forms 3, 4, 5)	0	0	0.00%	No
13D/G-only blocks	1	8,031,667	25.67%	Yes
Remaining	—	2,709,128	-8.66%	Negative
Registered funds (N-PORT, not summed)	2	149,997	0.48%	No

Shares outstanding: 31,291,667, the issuer's latest cover-page count restated onto today's split basis.

Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.

Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.

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 ILLU

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	Illumination Acquisition 1 Sponsor LLC 13D CIK 2101134 · Unknown · Mar 2, 2026	8,031,667	25.67%	—	Mar 2, 2026
1.1	Illumination Acquisition 1 Sponsor LLC Insider CIK 2101134 · Feb 26, 2026 10% Owner, issuer-wide, not summed	365,000	1.17%	—	Feb 26, 2026	10% Owner, issuer-wide, not summed
2	Magnetar Financial LLC 13F CIK 1352851 · Registered investment adviser · Jun 30, 2026 Classes ILLU, ILLUW	2,466,660	7.88%	+616,660	Jun 30, 2026	Classes ILLU, ILLUW
2.1	Magnetar Financial LLC 13G CIK 1352851 · Registered investment adviser · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	1,849,995	5.91%	—	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
3	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 13F CIK 1535845 · Non-US institution · Jun 30, 2026 Classes ILLU, ILLUW	1,333,333	4.26%	+333,333	Jun 30, 2026	Classes ILLU, ILLUW
4	Kryger Capital LLC 13F CIK 2123957 · Registered investment adviser · Jun 30, 2026 Classes ILLU, ILLUW	1,320,563	4.22%	+315,554	Jun 30, 2026	Classes ILLU, ILLUW
5	Linden Advisors LP 13F CIK 1279396 · Registered investment adviser · Jun 30, 2026 Classes ILLU, ILLUW	1,266,666	4.05%	+316,666	Jun 30, 2026	Classes ILLU, ILLUW
6	SONA ASSET MANAGEMENT (US) LLC 13F CIK 1856405 · Registered investment adviser · Jun 30, 2026 Classes ILLU, ILLUW	1,199,998	3.83%	+299,998	Jun 30, 2026	Classes ILLU, ILLUW
7	LMR Partners LLP 13F CIK 1578621 · Exempt reporting adviser · Jun 30, 2026	1,000,000	3.20%	0	Jun 30, 2026
8	GLAZER CAPITAL, LLC 13F CIK 1076809 · Registered investment adviser · Jun 30, 2026 Classes ILLU, ILLUW	968,250	3.09%	+210,294	Jun 30, 2026	Classes ILLU, ILLUW
9	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026 Classes ILLU, ILLUU	900,000	2.88%	0	Jun 30, 2026	Classes ILLU, ILLUU
10	Verition Fund Management LLC 13F CIK 1454027 · Registered investment adviser · Jun 30, 2026 Classes ILLU, ILLUW	830,333	2.65%	+205,333	Jun 30, 2026	Classes ILLU, ILLUW
11	Shaolin Capital Management LLC 13F CIK 1766806 · Registered investment adviser · Jun 30, 2026 Classes ILLU, ILLUW	803,041	2.57%	+100,616	Jun 30, 2026	Classes ILLU, ILLUW
12	Alberta Investment Management Corp 13F CIK 1463559 · Non-US institution · Jun 30, 2026 Classes ILLU, ILLUW	800,000	2.56%	+200,000	Jun 30, 2026	Classes ILLU, ILLUW
13	MOORE CAPITAL MANAGEMENT, LP 13F CIK 1448574 · Registered investment adviser · Jun 30, 2026 Classes ILLU, ILLUW	799,999	2.56%	+199,999	Jun 30, 2026	Classes ILLU, ILLUW
14	OMERS ADMINISTRATION Corp 13F CIK 1053321 · Pension or benefit plan · Jun 30, 2026	799,500	2.56%	-500	Jun 30, 2026
15	ARISTEIA CAPITAL, L.L.C. 13F CIK 1080171 · Registered investment adviser · Jun 30, 2026	767,265	2.45%	+65,572	Jun 30, 2026
16	Mint Tower Capital Management B.V. 13F CIK 1666606 · Unknown · Jun 30, 2026 Classes ILLU, ILLUW	666,666	2.13%	+166,666	Jun 30, 2026	Classes ILLU, ILLUW
17	RIVERNORTH CAPITAL MANAGEMENT, LLC 13F CIK 1447578 · Registered investment adviser · Jun 30, 2026 Classes ILLU, ILLUW	666,664	2.13%	+166,664	Jun 30, 2026	Classes ILLU, ILLUW
18	Radcliffe Capital Management, L.P. 13F CIK 1218275 · Registered investment adviser · Jun 30, 2026 Classes ILLU, ILLUW	665,577	2.13%	+166,416	Jun 30, 2026	Classes ILLU, ILLUW
19	AQR Arbitrage LLC 13F CIK 1167456 · Registered investment adviser · Jun 30, 2026	636,284	2.03%	+10,325	Jun 30, 2026
20	WHITEBOX ADVISORS LLC 13F CIK 1257391 · Registered investment adviser · Jun 30, 2026 Classes ILLU, ILLUW	600,000	1.92%	+150,000	Jun 30, 2026	Classes ILLU, ILLUW
21	TORONTO DOMINION BANK 13F CIK 947263 · Bank · Jun 30, 2026 Classes ILLUU, ILLUW	565,000	1.81%	+64,500	Jun 30, 2026	Classes ILLUU, ILLUW
22	TENOR CAPITAL MANAGEMENT Co., L.P. 13F CIK 1346554 · Registered investment adviser · Jun 30, 2026 Classes ILLU, ILLUW	533,333	1.70%	+133,333	Jun 30, 2026	Classes ILLU, ILLUW
23	Hudson Bay Capital Management LP 13F CIK 1393825 · Registered investment adviser · Jun 30, 2026 Classes ILLU, ILLUW	508,528	1.63%	+127,131	Jun 30, 2026	Classes ILLU, ILLUW
24	JPMORGAN CHASE & CO 13F CIK 19617 · Bank · Jun 30, 2026	500,000	1.60%	+500,000	Jun 30, 2026
25	BERKLEY W R CORP 13F CIK 11544 · Insurance company · Jun 30, 2026 Classes ILLU, ILLUW	430,732	1.38%	+107,682	Jun 30, 2026	Classes ILLU, ILLUW
26	PICTON MAHONEY ASSET MANAGEMENT 13F CIK 1539041 · Non-US institution · Jun 30, 2026 Classes ILLU, ILLUW	399,996	1.28%	+99,996	Jun 30, 2026	Classes ILLU, ILLUW
27	Lineage Point Capital LP 13F CIK 2093311 · Investment adviser · Jun 30, 2026 Classes ILLUU, ILLUW	393,042	1.26%	+55,249	Jun 30, 2026	Classes ILLUU, ILLUW
28	BNP PARIBAS ARBITRAGE, SA 13F CIK 1166588 · Non-US institution · Jun 30, 2026	374,041	1.20%	0	Jun 30, 2026
29	Context Capital Management, LLC 13F CIK 1301396 · Registered investment adviser · Jun 30, 2026 Classes ILLU, ILLUW	373,333	1.19%	+93,333	Jun 30, 2026	Classes ILLU, ILLUW
30	TWO SIGMA INVESTMENTS, LP 13F CIK 1179392 · Registered investment adviser · Jun 30, 2026	362,500	1.16%	0	Jun 30, 2026
31	Periscope Capital Inc. 13F CIK 1695320 · Exempt reporting adviser · Jun 30, 2026 Classes ILLU, ILLUW	352,400	1.13%	+125,174	Jun 30, 2026	Classes ILLU, ILLUW
32	Centiva Capital, LP 13F CIK 1692507 · Registered investment adviser · Jun 30, 2026 Classes ILLU, ILLUW	333,333	1.07%	+83,333	Jun 30, 2026	Classes ILLU, ILLUW
33	Polar Asset Management Partners Inc. 13F CIK 1326389 · Registered investment adviser · Jun 30, 2026 Classes ILLU, ILLUW	333,333	1.07%	+83,333	Jun 30, 2026	Classes ILLU, ILLUW
34	Clear Street Group Inc. 13F CIK 1881567 · Unknown · Jun 30, 2026 Classes ILLU, ILLUU, ILLUW	247,106	0.79%	+247,106	Jun 30, 2026	Classes ILLU, ILLUU, ILLUW
35	Parallax Volatility Advisers, L.P. 13F CIK 1521001 · Registered investment adviser · Jun 30, 2026	232,581	0.74%	+232,581	Jun 30, 2026
36	WOLVERINE ASSET MANAGEMENT LLC 13F CIK 1279891 · Registered investment adviser · Jun 30, 2026	159,279	0.51%	+159,279	Jun 30, 2026
37	Westchester Capital Management, LLC 13F CIK 1512805 · Registered investment adviser · Jun 30, 2026	150,000	0.48%	0	Jun 30, 2026
38	COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 13F CIK 1083190 · Unknown · Jun 30, 2026	133,333	0.43%	+133,333	Jun 30, 2026
39	DLD Asset Management, LP 13F CIK 1578299 · Registered investment adviser · Jun 30, 2026 Classes ILLU, ILLUW	133,332	0.43%	+33,332	Jun 30, 2026	Classes ILLU, ILLUW
40	Schonfeld Strategic Advisors LLC 13F CIK 1665241 · Registered investment adviser · Jun 30, 2026 Classes ILLU, ILLUW	109,006	0.35%	+9,006	Jun 30, 2026	Classes ILLU, ILLUW
41	BlueCrest Capital Management Ltd 13F CIK 1610880 · Unknown · Jun 30, 2026	100,000	0.32%	0	Jun 30, 2026
42	D. E. Shaw & Co., Inc. 13F CIK 1009207 · Unknown · Jun 30, 2026	100,000	0.32%	+100,000	Jun 30, 2026
43	MMCAP International Inc. SPC 13F CIK 1304857 · Unknown · Jun 30, 2026 Classes ILLU, ILLUW	100,000	0.32%	+25,000	Jun 30, 2026	Classes ILLU, ILLUW
44	Bulldog Investors, LLP 13F CIK 1504304 · Registered investment adviser · Jun 30, 2026 Classes ILLU, ILLUW	99,996	0.32%	+24,996	Jun 30, 2026	Classes ILLU, ILLUW
45	DELTEC ASSET MANAGEMENT LLC 13F CIK 1269950 · Registered investment adviser · Jun 30, 2026	99,900	0.32%	-100	Jun 30, 2026
46	Virtu Financial LLC 13F CIK 1533964 · Unknown · Jun 30, 2026	75,693	0.24%	-11,446	Jun 30, 2026
47	Saba Capital Management, L.P. 13F CIK 1510281 · Registered investment adviser · Jun 30, 2026	66,666	0.21%	-133,334	Jun 30, 2026
48	RLH Capital LLC 13F CIK 2008031 · Unknown · Jun 30, 2026	50,000	0.16%	+50,000	Jun 30, 2026
49	Special Opportunities Fund, Inc. Fund · Registered fund · Jun 30, 2026 Special Opportunities Fund, Inc., not summed	49,998	0.16%	—	Jun 30, 2026	Special Opportunities Fund, Inc., not summed
49.1	RiverNorth Opportunities Fund Inc. Fund · Registered fund · Jun 30, 2026 RIVERNORTH OPPORTUNITIES FUND INC., not summed	99,999	0.32%	—	Jun 30, 2026	RIVERNORTH OPPORTUNITIES FUND INC., not summed
50	HEIGHTS CAPITAL MANAGEMENT, INC 13F CIK 1081698 · Unknown · Jun 30, 2026 Classes ILLU, ILLUW	47,401	0.15%	+11,801	Jun 30, 2026	Classes ILLU, ILLUW

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.

Showing 1–50 of 57 holders

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Key facts CIK 2101135 CUSIP G470AU100 Visit website Investor relations