Vault-13

MKS INC. MKSI 1.25 06.01.30

NOTE 1.250% 6/0 · US DOMESTIC · CUSIP 55306NAB0

79 institutional holders +8 vs Q4 2025
48,906,61048.9m shares reported held*
$2.2bnreported value*
25 new 12 added 31 reduced 18 sold out net bought ≈ $51.8m (+21.1m 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 ($165.9k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $45.39.

Trends to Q1 2026

Institutional holders

Managers reporting a position, each quarter

050100Q2 25: 66Q3 25: 69Q4 25: 71Q1 26: 7979Q2 25Q3 25Q4 25Q1 26
Numbers
QuarterHolders
Q2 202566
Q3 202569
Q4 202571
Q1 202679

Buyers vs sellers

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

Bought or addedCut or sold out
50050Q3 25: 33 bought or addedQ3 25: 31 cut or sold outQ3 25Q4 25: 25 bought or addedQ4 25: 34 cut or sold outQ4 25Q1 26: 37 bought or addedQ1 26: 49 cut or sold outQ1 26
Numbers
QuarterBought or addedCut or sold out
Q3 20253331
Q4 20252534
Q1 20263749

Biggest buyers

Sculptor Capital LP New +109,500,000+109.5m
BNP PARIBAS FINANCIAL MARKETS Added +40,798,000+40.8m
TENOR CAPITAL MANAGEMENT Co., L.P. New +30,942,000+30.9m
Alberta Investment Management Corp New +27,500,000+27.5m
DeepCurrents Investment Group LLC New +27,035,000+27.0m
SSI INVESTMENT MANAGEMENT LLC New +13,080,000+13.1m
ARISTEIA CAPITAL, L.L.C. New +12,000,000+12.0m
LORD, ABBETT & CO. LLC Added +11,616,000+11.6m
SUSQUEHANNA ADVISORS GROUP, INC. New +10,537,000+10.5m
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND New +10,500,000+10.5m

Biggest sellers

Invesco Ltd. Reduced -36,987,000-37.0m
LAZARD ASSET MANAGEMENT LLC Reduced -35,543,000-35.5m
CAMDEN ASSET MANAGEMENT L P /CA Sold out -33,076,000-33.1m
VOYA INVESTMENT MANAGEMENT LLC Reduced -28,050,000-28.1m
FMR LLC Reduced -26,911,000-26.9m
Empyrean Capital Partners, LP Sold out -23,800,000-23.8m
Lombard Odier Asset Management (Europe) Ltd Sold out -19,792,000-19.8m
SSI INVESTMENT MANAGEMENT LLC Sold out -19,057,000-19.1m
BANK OF MONTREAL /CAN/ Reduced -15,000,000-15.0m
Linden Advisors LP Reduced -14,231,000-14.2m

Holders, Q1 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Linden Advisors LP 1.85% of their portfolio New York, NY 198,888,000198.9m $329.8m $329.8m 1.85% Reduced -14.2m -14,231,000
2 VOYA INVESTMENT MANAGEMENT LLC 0.34% of their portfolio ATLANTA, GA 195,810,000195.8m $324.0m $324.0m 0.34% Reduced -28.1m -28,050,000
3 Sculptor Capital LP 2.05% of their portfolio New York, NY 109,500,000109.5m $181.7m $181.7m 2.05% New
4 Calamos Advisors LLC 0.50% of their portfolio NAPERVILLE, IL 78,265,00078.3m $129.8m $129.8m 0.50% Reduced -10.3m -10,288,000
5 FRANKLIN RESOURCES INC 0.02% of their portfolio San Mateo, CA 58,625,00058.6m $97.0m $97.0m 0.02% Reduced -3.2m -3,234,000
6 BNP PARIBAS FINANCIAL MARKETS 0.06% of their portfolio PARIS, I0 58,178,00058.2m $96.1m $96.1m 0.06% Added +40.8m +40,798,000
7 FMR LLC 0.00% of their portfolio BOSTON, MA 47,862,00047.9m $79.1m $79.1m 0.00% Reduced -26.9m -26,911,000
8 Invesco Ltd. 0.01% of their portfolio ATLANTA, GA 46,146,00046.1m $76.2m $76.2m 0.01% Reduced -37.0m -36,987,000
9 ZAZOVE ASSOCIATES LLC 2.69% of their portfolio INCLINE VILLAGE, NV 43,680,00043.7m $56.9m $56.9m 2.69% Added +2.5m +2,500,000
10 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 40,641,00040.6m $63.0m $63.0m 0.00% Reduced -8.1m -8,110,000
11 MacKay Shields LLC 2.21% of their portfolio New York, NY 36,510,00036.5m $60.4m $60.4m 2.21% Reduced -38.0k -38,000
12 TENOR CAPITAL MANAGEMENT Co., L.P. 0.79% of their portfolio NEW YORK, NY 30,942,00030.9m $51.4m $51.4m 0.79% New
13 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 29,672,00029.7m $48.8m $48.8m 0.00% Reduced -78.0k -78,000
14 Davidson Kempner Capital Management LP 0.82% of their portfolio New York, NY 28,000,00028.0m $46.3m $46.3m 0.82% Not comparable
15 Alberta Investment Management Corp 0.28% of their portfolio EDMONTON, A0 27,500,00027.5m $45.6m $45.6m 0.28% New
16 DeepCurrents Investment Group LLC 1.84% of their portfolio NEW YORK, NY 27,035,00027.0m $44.8m $44.8m 1.84% New
17 BANK OF MONTREAL /CAN/ 0.02% of their portfolio TORONTO, A6 25,000,00025.0m $41.5m $41.5m 0.02% Reduced -15.0m -15,000,000
18 BlackRock, Inc. 0.00% of their portfolio New York, NY 22,804,00022.8m $37.7m $37.7m 0.00% Added +2.4m +2,401,000
19 Thrivent Financial for Lutherans 0.07% of their portfolio Minneapolis, MN 20,897,00020.9m $34.6m $34.6m 0.07% Reduced -6.8m -6,800,000
20 LAZARD ASSET MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 19,686,00019.7m $325.7k $325.7k 0.00% Reduced -35.5m -35,543,000
21 LORD, ABBETT & CO. LLC 0.07% of their portfolio JERSEY CITY, NJ 13,570,00013.6m $22.4m $22.4m 0.07% Added +11.6m +11,616,000
22 SSI INVESTMENT MANAGEMENT LLC 1.49% of their portfolio Los Angeles, CA 13,080,00013.1m $21.6m $21.6m 1.49% New
23 ABSOLUTE INVESTMENT ADVISERS, LLC 2.38% of their portfolio ROSEMARY BEACH, FL 12,268,00012.3m $20.2m $20.2m 2.38% Unchanged
24 ARISTEIA CAPITAL, L.L.C. 0.46% of their portfolio GREENWICH, CT 12,000,00012.0m $19.9m $19.9m 0.46% New
25 SUSQUEHANNA ADVISORS GROUP, INC. 0.01% of their portfolio BALA CYNWYD, PA 10,537,00010.5m $174.7k $174.7k 0.01% New
26 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.03% of their portfolio TORONTO, A6 10,500,00010.5m $17.4m $17.4m 0.03% New
27 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.01% of their portfolio Toronto, A6 10,200,00010.2m $16.9m $16.9m 0.01% New
28 Point72 Asset Management, L.P. 0.03% of their portfolio STAMFORD, CT 10,000,00010.0m $16.6m $16.6m 0.03% Added +1.5m +1,500,000
29 Ovata Capital Management Ltd 2.32% of their portfolio HONG KONG, K3 10,000,00010.0m $16.6m $16.6m 2.32% New
30 Nuveen, LLC 0.00% of their portfolio CHARLOTTE, NC 10,000,00010.0m $16.5m $16.5m 0.00% New
31 BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.02% of their portfolio Paris, I0 9,505,0009.5m $15.4m $15.4m 0.02% Added +4.0m +4,000,000
32 ADVENT CAPITAL MANAGEMENT /DE/ 0.46% of their portfolio NEW YORK, NY 9,458,0009.5m $15.7m $15.7m 0.46% Added +6.6m +6,608,000
33 BANK OF NOVA SCOTIA 0.03% of their portfolio TORONTO, A6 9,284,2009.3m $15.0m $15.0m 0.03% New
34 DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main 0.01% of their portfolio FRANKFURT AM MAIN, 2M 7,450,0007.5m $12.4m $12.4m 0.01% Reduced -9.3m -9,300,000
35 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 7,002,0007.0m $11.6m $11.6m 0.00% Reduced -2.0m -2,000,000
36 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 6,950,0007.0m $11.5m $11.5m 0.00% Added +6.3m +6,323,000
37 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 5,836,0005.8m $9.6m $9.6m 0.00% Reduced -4.0m -3,995,000
38 Universal- Beteiligungs- und Servicegesellschaft mbH 0.02% of their portfolio FRANKFURT AM MAIN, 2M 5,312,0005.3m $8.8m $8.8m 0.02% Reduced -2.4m -2,417,000
39 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 5,240,0005.2m $8.7m $8.7m 0.00% Reduced -6.2m -6,242,000
40 Jain Global LLC 0.11% of their portfolio NEW YORK, NY 5,000,0005.0m $8.3m $8.3m 0.11% New
41 Amundi 0.00% of their portfolio Paris, I0 4,000,0004.0m $6.6k $6.6k 0.00% Reduced -4.0m -4,000,000
42 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 3,087,0003.1m $5.1m $5.1m 0.00% Reduced -1.2m -1,227,000
43 STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio MADISON, WI 3,000,0003.0m $5.0m $5.0m 0.01% Unchanged
44 SCHRODER INVESTMENT MANAGEMENT GROUP 0.00% of their portfolio London, X0 2,795,0002.8m $4.5m $4.5m 0.00% Reduced -8.2m -8,165,000
45 Man Group plc 0.01% of their portfolio LONDON, X0 2,500,0002.5m $4.1m $4.1m 0.01% Reduced -1.0m -1,005,000
46 GLAZER CAPITAL, LLC 0.07% of their portfolio New York, NY 2,000,0002.0m $3.3m $3.3m 0.07% New
47 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 1,765,0001.8m $2.9m $2.9m 0.00% New
48 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 1,608,0001.6m $2.7m $2.7m 0.00% New
49 SHENKMAN CAPITAL MANAGEMENT INC 0.25% of their portfolio NEW YORK, NY 1,259,0001.3m $2.1m $2.1m 0.25% Reduced -9.7m -9,724,000
50 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 1,250,0001.2m $2.1m $2.1m 0.00% New
51 AGF MANAGEMENT LTD 0.01% of their portfolio TORONTO, A6 1,225,0001.2m $2.0m $2.0m 0.01% New
52 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 1,138,0001.1m $1.9m $1.9m 0.00% Reduced -771.0k -771,000
53 WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio Boston, MA 1,053,0001.1m $1.8m $1.8m 0.00% Reduced -5.4m -5,357,000
54 Kohlberg Kravis Roberts & Co. L.P. 0.03% of their portfolio NEW YORK, NY 859,000859.0k $1.4m $1.4m 0.03% Reduced -790.0k -790,000
55 EFG International AG 0.03% of their portfolio Zurich, V8 750,000750.0k $1.2m $1.2m 0.03% New
56 Jefferies Financial Group Inc. 0.02% of their portfolio NEW YORK, NY 748,000748.0k $1.2m $1.2m 0.02% New
57 Calamos Wealth Management LLC 0.03% of their portfolio NAPERVILLE, IL 558,000558.0k $925.7k $925.7k 0.03% Reduced -162.0k -162,000
58 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 500,000500.0k $829.3k $829.3k 0.00% Unchanged
59 Benefit Street Partners LLC 0.96% of their portfolio NEW YORK, NY 500,000500.0k $828.2k $828.2k 0.96% New
60 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 491,000491.0k $811.1k $811.1k 0.00% Reduced -1.7m -1,660,000
61 Central Pacific Bank - Trust Division 0.09% of their portfolio HONOLULU, HI 444,000444.0k $733.5k $733.5k 0.09% Reduced -248.0k -248,000
62 Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio ZURICH, V8 300,000300.0k $484.0k $484.0k 0.00% Reduced -1.3m -1,300,000
63 SEI INVESTMENTS CO 0.00% of their portfolio OAKS, PA 296,000296.0k $489.0k $489.0k 0.00% Unchanged
64 UBS Group AG 0.00% of their portfolio ZURICH, V8 267,000267.0k $441.1k $441.1k 0.00% Added +160.0k +160,000
65 Ares Systematic Credit Ltd 0.24% of their portfolio LONDON, X0 200,000200.0k $309.9k $309.9k 0.24% Added +100.0k +100,000
66 SG Americas Securities, LLC 0.02% of their portfolio NEW YORK, NY 107,180107.2k $17.6m $17.6m 0.02% New
67 ABN AMRO INVESTMENT SOLUTIONS 0.00% of their portfolio PARIS CEDEX 008, I0 100,000100.0k $165.9k $165.9k 0.00% Added +99.7k +99,700
68 OPPENHEIMER ASSET MANAGEMENT INC. 0.00% of their portfolio NEW YORK, NY 96,00096.0k $158.6k $158.6k 0.00% Reduced -4.0k -4,000
69 &PARTNERS 0.00% of their portfolio NASHVILLE, TN 70,00070.0k $115.6k $115.6k 0.00% Added +8.0k +8,000
70 VIRTUS ADVISERS, LLC 0.05% of their portfolio HARTFORD, CT 59,00059.0k $97.5k $97.5k 0.05% Unchanged
71 LOOMIS SAYLES & CO L P 0.01% of their portfolio BOSTON, MA 45,12645.1k $10.4m $10.4m 0.01% New
72 STEPHENS INC /AR/ 0.00% of their portfolio LITTLE ROCK, AR 30,00030.0k $49.6k $49.6k 0.00% Unchanged
73 Balboa Wealth Partners 0.00% of their portfolio SCOTTSDALE, AZ 16,00016.0k $25.8k $25.8k 0.00% Unchanged
74 MML INVESTORS SERVICES, LLC 0.00% of their portfolio SPRINGFIELD, MA 10,00010.0k $16.5k $16.5k 0.00% Unchanged
75 Boussard & Gavaudan Investment Management LLP 0.97% of their portfolio London, X0 6,3006.3k $10.1m $10.1m 0.97% New
76 LAFFER TENGLER INVESTMENTS, INC. 0.28% of their portfolio Scottsdale, AZ 1,1431.1k $1.9m $1.9m 0.28% New
77 Candriam S.C.A. 0.01% of their portfolio STRASSEN, N4 1,0001.0k $1.7m $1.7m 0.01% Unchanged
78 ODDO BHF ASSET MANAGEMENT SAS 0.01% of their portfolio PARIS, I0 184184 $306.0k $306.0k 0.01% Reduced -216 -216
79 Erste Asset Management GmbH 0.00% of their portfolio VIENNA, C4 00 $0 $0 0.00% Unchanged