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ILLU · Illumination Acquisition Corp. I · Holdings

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$9.98 At close · Oct 2
Rebalance outlook locked
Market Cap
$313.07M
Shares
31.29M
Volume · Oct 2 81.12K Avg daily vol (3M) 99.57K

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.
Holders: 55
Total Value: $208,720,154
Total Shares: 26,202,461

Institutional Ownership Trend

2 quarters

Holder Concentration

Across 55 13F filers · Δ vs Mar 31, 2026
Top Holder
8.8%
Mar 2026 → Jun 2026 · range 8.8% – 8.8%
−0.1 pts
Top 5
27.5%
Mar 2026 → Jun 2026 · range 27.5% – 27.8%
−0.2 pts
Top 10
47.7%
Mar 2026 → Jun 2026 · range 47.4% – 47.7%
+0.3 pts
HHI
353
Mar 2026 → Jun 2026 · range 353 – 359
Broadly held−6

Quarterly Activity

vs Mar 31, 2026
New
9
Increased
32
Decreased
6
Sold Out
3
Unchanged
8
Holder count: +6
Institutional value: +0.6%
Shares held: +25.3%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open
Magnetar Financial LLC +616,660 2,466,660
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND +333,333 1,333,333
Linden Advisors LP +316,666 1,266,666
Kryger Capital LLC +315,554 1,320,563
SONA ASSET MANAGEMENT (US) LLC +299,998 1,199,998

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open
Saba Capital Management, L.P. −133,334 66,666
Virtu Financial LLC −11,446 75,693
OMERS ADMINISTRATION Corp −500 799,500
DELTEC ASSET MANAGEMENT LLC −100 99,900
CITADEL ADVISORS LLC −23 10,496

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open
JPMORGAN CHASE & CO 500,000 $5,025,000
Clear Street Group Inc. 247,106 $2,092,875
WOLVERINE ASSET MANAGEMENT LLC 159,279 $1,576,862
D. E. Shaw & Co., Inc. 100,000 $990,000
RLH Capital LLC 50,000 $495,000

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
OAKTREE CAPITAL MANAGEMENT LP 750,000 $7,440,000
Ionic Capital Management LLC 65,000 $644,800
ROBINSON CAPITAL MANAGEMENT, LLC 12,280 $121,817
Filter: New 9 Increased 32 Reduced 6 Sold out 3 Unchanged 8
Showing 88 of 88
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Magnetar Financial LLC $18,314,950 8.77% 1,849,995
LMR Partners LLP ILLUU $10,050,000 4.82% 1,000,000
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND $9,900,000 4.74% 1,000,000
Kryger Capital LLC $9,783,001 4.69% 988,182
Linden Advisors LP $9,405,000 4.51% 950,000
SONA ASSET MANAGEMENT (US) LLC $8,910,000 4.27% 900,000
GLAZER CAPITAL, LLC $8,578,102 4.11% 866,475
OMERS ADMINISTRATION Corp ILLUU $8,034,975 3.85% 799,500
ARISTEIA CAPITAL, L.L.C. ILLUU $7,711,013 3.69% 767,265
MILLENNIUM MANAGEMENT LLC $6,930,000 3.32% 700,000
AQR Arbitrage LLC ILLUU $6,394,654 3.06% 636,284
Verition Fund Management LLC $6,187,500 2.96% 625,000
Shaolin Capital Management LLC $5,962,581 2.86% 602,281
MOORE CAPITAL MANAGEMENT, LP $5,940,000 2.85% 600,000
Alberta Investment Management Corp $5,940,000 2.85% 600,000
TORONTO DOMINION BANK ILLUU $5,025,000 2.41% 500,000
JPMORGAN CHASE & CO ILLUU $5,025,000 2.41% 500,000
Mint Tower Capital Management B.V. $4,950,000 2.37% 500,000
RIVERNORTH CAPITAL MANAGEMENT, LLC $4,949,980 2.37% 499,998
Radcliffe Capital Management, L.P. $4,941,921 2.37% 499,184
WHITEBOX ADVISORS LLC $4,455,000 2.13% 450,000
TENOR CAPITAL MANAGEMENT Co., L.P. $3,960,000 1.90% 400,000
Hudson Bay Capital Management LP $3,775,820 1.81% 381,396
BNP PARIBAS ARBITRAGE, SA ILLUU $3,759,112 1.80% 374,041
TWO SIGMA INVESTMENTS, LP $3,588,750 1.72% 362,500
Lineage Point Capital LP ILLUU $3,402,859 1.63% 338,593
BERKLEY W R CORP $3,198,185 1.53% 323,049
PICTON MAHONEY ASSET MANAGEMENT $2,969,970 1.42% 299,997
Context Capital Management, LLC $2,772,000 1.33% 280,000
Periscope Capital Inc. $2,740,320 1.31% 276,800
Polar Asset Management Partners Inc. $2,475,000 1.19% 250,000
Centiva Capital, LP $2,475,000 1.19% 250,000
MILLENNIUM MANAGEMENT LLC ILLUU $2,010,000 0.96% 200,000
WOLVERINE ASSET MANAGEMENT LLC $1,576,862 0.76% 159,279
Westchester Capital Management, LLC ILLUU $1,507,498 0.72% 150,000
Clear Street Group Inc. $1,329,678 0.64% 134,311
BlueCrest Capital Management Ltd ILLUU $1,005,000 0.48% 100,000
DLD Asset Management, LP $990,000 0.47% 100,000
D. E. Shaw & Co., Inc. $990,000 0.47% 100,000
DELTEC ASSET MANAGEMENT LLC $989,010 0.47% 99,900
Schonfeld Strategic Advisors LLC $831,669 0.40% 84,007
Clear Street Group Inc. ILLUU $763,197 0.37% 75,940
Virtu Financial LLC $749,360 0.36% 75,693
MMCAP International Inc. SPC $742,500 0.36% 75,000
Bulldog Investors, LLP $742,470 0.36% 74,997
RLH Capital LLC $495,000 0.24% 50,000
Kepos Capital LP $395,990 0.19% 39,999
HEIGHTS CAPITAL MANAGEMENT, INC $352,440 0.17% 35,600
SUSQUEHANNA INTERNATIONAL GROUP, LLP ILLUU $301,500 0.14% 30,000
ABC ARBITRAGE SA $297,000 0.14% 30,000
CITADEL ADVISORS LLC ILLUU $105,484 0.05% 10,496
LONGFELLOW INVESTMENT MANAGEMENT CO LLC ILLUU $39,526 0.02% 3,933
MORGAN STANLEY $277 0.00% 28
GLAZER CAPITAL, LLC ILLUW — — 101,775
MMCAP International Inc. SPC ILLUW — — 25,000
Parallax Volatility Advisers, L.P. ILLUW — — 232,581
WHITEBOX ADVISORS LLC ILLUW — — 150,000
Kryger Capital LLC ILLUW — — 332,381
Magnetar Financial LLC ILLUW — — 616,665
Context Capital Management, LLC ILLUW — — 93,333
MOORE CAPITAL MANAGEMENT, LP ILLUW — — 199,999
Lineage Point Capital LP ILLUW — — 54,449
Mint Tower Capital Management B.V. ILLUW — — 166,666
SONA ASSET MANAGEMENT (US) LLC ILLUW — — 299,998
DLD Asset Management, LP ILLUW — — 33,332
PICTON MAHONEY ASSET MANAGEMENT ILLUW — — 99,999
Hudson Bay Capital Management LP ILLUW — — 127,132
BERKLEY W R CORP ILLUW — — 107,683
Polar Asset Management Partners Inc. ILLUW — — 83,333
Alberta Investment Management Corp ILLUW — — 200,000
Saba Capital Management, L.P. ILLUW — — 66,666
Schonfeld Strategic Advisors LLC ILLUW — — 24,999
Centiva Capital, LP ILLUW — — 83,333
Bulldog Investors, LLP ILLUW — — 24,999
Periscope Capital Inc. ILLUW — — 75,600
UBS Group AG ILLUW — — 9
TENOR CAPITAL MANAGEMENT Co., L.P. ILLUW — — 133,333
MILLENNIUM MANAGEMENT LLC ILLUW — — 233,333
RIVERNORTH CAPITAL MANAGEMENT, LLC ILLUW — — 166,666
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND ILLUW — — 333,333
HEIGHTS CAPITAL MANAGEMENT, INC ILLUW — — 11,801
TORONTO DOMINION BANK ILLUW — — 65,000
Linden Advisors LP ILLUW — — 316,666
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS ILLUW — — 133,333
Shaolin Capital Management LLC ILLUW — — 200,760
Verition Fund Management LLC ILLUW — — 205,333
Radcliffe Capital Management, L.P. ILLUW — — 166,393
Clear Street Group Inc. ILLUW — — 36,855
Key facts CIK 2101135 CUSIP G470AU100 Visit website Investor relations