Vault-13

HIGHVIEW MERGER CORP HVMC

ORD SH CL A · Common Stock · CUSIP G4569C101

57 institutional holders +1 vs Q1 2026
21,488,05221.5m shares reported held*
$218.2mreported value*
3 new 12 added 7 reduced 2 sold out net bought ≈ $4.4m (+283.2k shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $10.15.

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

0204060Q4 25: 50Q1 26: 56Q2 26: 5757Q4 25Q1 26Q2 26
Numbers
QuarterHolders
Q4 202550
Q1 202656
Q2 202657

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
20020Q1 26: 20 bought or addedQ1 26: 10 cut or sold outQ1 26Q2 26: 15 bought or addedQ2 26: 9 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q1 20262010
Q2 2026159

Biggest buyers

D. E. Shaw & Co., Inc. New +250,000+250.0k
Karpus Management, Inc. Added +147,450+147.4k
GLAZER CAPITAL, LLC Added +136,451+136.5k
HIGHBRIDGE CAPITAL MANAGEMENT LLC New +135,282+135.3k
MIZUHO SECURITIES USA LLC Added +57,000+57.0k
Polar Asset Management Partners Inc. Added +50,100+50.1k
CANTOR FITZGERALD, L. P. New +47,326+47.3k
PenderFund Capital Management Ltd. Added +45,939+45.9k
AQR Arbitrage LLC Added +31,755+31.8k
Radcliffe Capital Management, L.P. Added +14,053+14.1k

Biggest sellers

TORONTO DOMINION BANK Reduced -250,519-250.5k
Irenic Capital Management LP Reduced -150,000-150.0k
K2 PRINCIPAL FUND, L.P. Sold out -100,000-100.0k
Shaolin Capital Management LLC Reduced -89,376-89.4k
Clear Street Group Inc. Reduced -30,500-30.5k
Virtu Financial LLC Sold out -16,222-16.2k
Meteora Capital, LLC Reduced -7,025-7.0k
MORGAN STANLEY Reduced -20-20
RIVERNORTH CAPITAL MANAGEMENT, LLC Reduced -1-1

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Highview Sponsor Co., LLC 13D · may seek influence new · filed 2025-08-13
Stated purposeFounder Shares On April 16, 2025, the Sponsor paid $25,000 to cover certain of Issuer's offering and formation costs in exchange for 5,750,000 Class B ordinary shares, par value $0.0001 per share of the Issuer (the "Class B ordinary shares" or the "Founder Shares"). The Founder Shares will automatically convert into Class A ordinary shares immediately prior to, concurrently with or immediately following the consummation of the Issuer's initial business combination (the "Business Combination") or earlier at the option of the holder on a one-for-one basis, subject to the adjustments and anti-dilution rights described under the heading "Description of Securities--Founder Shares and Private Placement Shares" in the Issuer's prospectus (File No. 333-288914). Private Placement Units Simultane… Full filing
 20.8% new 6.1m≈ $62.2m 2025-08-13
Adage Capital Management, L.P. 13G · institution new · filed 2025-11-13 7.6% new 1.8m≈ $18.3m 2025-11-13
AQR CAPITAL MANAGEMENT LLC 13G · institution new · filed 2025-11-13 5.4% new 1.3m≈ $12.9m 2025-11-13

Fell to 5% or below in the last year: HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND (4.2%, 2026-02-13), MILLENNIUM MANAGEMENT LLC (4.2%, 2026-01-27)

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

None reported since 1 Apr 2026.

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 ADAGE CAPITAL PARTNERS GP, L.L.C. 0.03% of their portfolio Boston, MA 1,800,0001.8m $18.3m $18.3m 0.03% Unchanged
2 Alberta Investment Management Corp 0.07% of their portfolio EDMONTON, A0 1,250,0001.2m $12.7m $12.7m 0.07% Unchanged
3 AQR Arbitrage LLC 0.18% of their portfolio Greenwich, CT 1,246,9461.2m $12.7m $12.7m 0.18% Added +31.8k +31,755
4 GLAZER CAPITAL, LLC 0.28% of their portfolio New York, NY 1,114,7001.1m $11.3m $11.3m 0.28% Added +136.5k +136,451
5 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.01% of their portfolio TORONTO, A6 1,000,0001.0m $10.2m $10.2m 0.01% Unchanged
6 Magnetar Financial LLC 0.09% of their portfolio EVANSTON, IL 929,288929.3k $9.4m $9.4m 0.09% Unchanged
7 Hudson Bay Capital Management LP 0.04% of their portfolio STAMFORD, CT 901,878901.9k $9.2m $9.2m 0.04% Unchanged
8 MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio NEW YORK, NY 852,000852.0k $8.7m $8.7m 0.01% Added +2 +2
9 Linden Advisors LP 0.04% of their portfolio New York, NY 750,000750.0k $7.6m $7.6m 0.04% Unchanged
10 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 632,853632.9k $6.4m $6.4m 0.00% Unchanged
11 Radcliffe Capital Management, L.P. 0.43% of their portfolio BALA CYNWYD, PA 556,664556.7k $5.7m $5.7m 0.43% Added +14.1k +14,053
12 Schonfeld Strategic Advisors LLC 0.03% of their portfolio NEW YORK, NY 543,691543.7k $5.5m $5.5m 0.03% Added +3.7k +3,691
13 Verition Fund Management LLC 0.04% of their portfolio GREENWICH, CT 536,599536.6k $5.4m $5.4m 0.04% Unchanged
14 Sculptor Capital LP 0.05% of their portfolio New York, NY 500,000500.0k $5.1m $5.1m 0.05% Unchanged
15 TENOR CAPITAL MANAGEMENT Co., L.P. 0.07% of their portfolio NEW YORK, NY 500,000500.0k $5.1m $5.1m 0.07% Unchanged
16 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 453,043453.0k $4.6m $4.6m 0.00% Unchanged
17 Polar Asset Management Partners Inc. 0.08% of their portfolio TORONTO, A6 450,100450.1k $4.6m $4.6m 0.08% Added +50.1k +50,100
18 Shaolin Capital Management LLC 0.24% of their portfolio Miami, FL 410,624410.6k $4.2m $4.2m 0.24% Reduced -89.4k -89,376
19 COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.02% of their portfolio HARRISBURG, PA 400,000400.0k $4.1m $4.1m 0.02% Unchanged
20 MOORE CAPITAL MANAGEMENT, LP 0.09% of their portfolio NEW YORK, NY 400,000400.0k $4.1m $4.1m 0.09% Unchanged
21 Lineage Point Capital LP 0.83% of their portfolio PALM BEACH, FL 399,900399.9k $4.1m $4.1m 0.83% Unchanged
22 Periscope Capital Inc. 0.57% of their portfolio Toronto, A6 350,000350.0k $3.6m $3.6m 0.57% Unchanged
23 Karpus Management, Inc. 0.10% of their portfolio Pittsford, NY 344,650344.6k $3.5m $3.5m 0.10% Added +147.4k +147,450
24 BERKLEY W R CORP 0.17% of their portfolio Greenwich, CT 333,856333.9k $3.4m $3.4m 0.17% Unchanged
25 Irenic Capital Management LP 0.22% of their portfolio NEW YORK, NY 300,000300.0k $3.0m $3.0m 0.22% Reduced -150.0k -150,000
26 TORONTO DOMINION BANK 0.00% of their portfolio TORONTO, ONTARIO, A6 250,000250.0k $2.5m $2.5m 0.00% Reduced -250.5k -250,519
27 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 250,000250.0k $2.5m $2.5m 0.00% New
28 HBK INVESTMENTS L P 0.03% of their portfolio DALLAS, TX 250,000250.0k $2.5m $2.5m 0.03% Unchanged
29 First Trust Capital Management L.P. 0.15% of their portfolio CHICAGO, IL 250,000250.0k $2.5m $2.5m 0.15% Unchanged
30 O'Connor Alternative Investments LLC 0.19% of their portfolio NEW YORK, NY 250,000250.0k $2.5m $2.5m 0.19% Unchanged
31 MIZUHO SECURITIES USA LLC 0.02% of their portfolio NEW YORK, NY 245,688245.7k $2.5m $2.5m 0.02% Added +57.0k +57,000
32 Bulldog Investors, LLP 0.49% of their portfolio SADDLE BROOK, NJ 219,965220.0k $2.2m $2.2m 0.49% Unchanged
33 RIVERNORTH CAPITAL MANAGEMENT, LLC 0.10% of their portfolio WEST PALM BEACH, FL 205,738205.7k $2.1m $2.1m 0.10% Reduced -1 -1
34 PICTON MAHONEY ASSET MANAGEMENT 0.02% of their portfolio Toronto, A6 200,000200.0k $2.0m $2.0m 0.02% Unchanged
35 Centiva Capital, LP 0.07% of their portfolio New York, NY 200,000200.0k $2.0m $2.0m 0.07% Unchanged
36 ARISTEIA CAPITAL, L.L.C. 0.03% of their portfolio GREENWICH, CT 187,433187.4k $1.9m $1.9m 0.03% Unchanged
37 Westchester Capital Management, LLC 0.09% of their portfolio VALHALLA, NY 170,299170.3k $1.7m $1.7m 0.09% Unchanged
38 CSS LLC/IL 0.08% of their portfolio CHICAGO, IL 167,374167.4k $1.7m $1.7m 0.08% Unchanged
39 Clear Street Group Inc. 0.01% of their portfolio NEW YORK, NY 160,196160.2k $1.6m $1.6m 0.01% Reduced -30.5k -30,500
40 SONA ASSET MANAGEMENT (US) LLC 0.06% of their portfolio NEW YORK, NY 156,076156.1k $1.6m $1.6m 0.06% Unchanged
41 Governors Lane LP 0.16% of their portfolio NEW YORK, NY 153,935153.9k $1.6m $1.6m 0.16% Unchanged
42 Context Capital Management, LLC 0.03% of their portfolio LAJOLLA, CA 150,000150.0k $1.5m $1.5m 0.03% Unchanged
43 TIG Advisors, LLC 0.07% of their portfolio New York, NY 150,000150.0k $1.5m $1.5m 0.07% Unchanged
44 HIGHBRIDGE CAPITAL MANAGEMENT LLC 0.05% of their portfolio NEW YORK, NY 135,282135.3k $1.4m $1.4m 0.05% New
45 GRITSTONE ASSET MANAGEMENT LLC 1.24% of their portfolio Bethesda, MD 127,021127.0k $1.3m $1.3m 1.24% Unchanged
46 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 111,967112.0k $1.1m $1.1m 0.00% Added +21 +21
47 DLD Asset Management, LP 0.08% of their portfolio NEW YORK, NY 100,307100.3k $1.0m $1.0m 0.08% Unchanged
48 WHITEBOX ADVISORS LLC 0.02% of their portfolio MINNEAPOLIS, MN 100,000100.0k $1.0m $1.0m 0.02% Unchanged
49 Meteora Capital, LLC 0.08% of their portfolio Boca Raton, FL 92,97593.0k $944.6k $944.6k 0.08% Reduced -7.0k -7,025
50 PenderFund Capital Management Ltd. 0.08% of their portfolio VANCOUVER, A1 63,93963.9k $649.0k $649.0k 0.08% Added +45.9k +45,939
51 HEIGHTS CAPITAL MANAGEMENT, INC 0.12% of their portfolio SAN FRANCISCO, CA 50,00050.0k $507.5k $507.5k 0.12% Unchanged
52 CANTOR FITZGERALD, L. P. 0.00% of their portfolio NEW YORK, NY 47,32647.3k $480.4k $480.4k 0.00% New
53 ABC ARBITRAGE SA 0.04% of their portfolio PARIS, I0 35,00035.0k $355.6k $355.6k 0.04% Unchanged
54 Mint Tower Capital Management B.V. 0.03% of their portfolio AMSTERDAM, P7 25,00025.0k $254.0k $254.0k 0.03% Unchanged
55 Parallax Volatility Advisers, L.P. 0.01% of their portfolio San Francisco, CA 17,22417.2k $174.8k $174.8k 0.01% Added +324 +324
56 UBS Group AG 0.00% of their portfolio ZURICH, V8 8,4668.5k $86.0k $86.0k 0.00% Added +7.5k +7,466
57 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 4949 $498 $498 0.00% Reduced -20 -20