Vault-13

WESTERN DIGITAL CORP WDC 3 11.15.28

NOTE 3.000%11/1 · US DOMESTIC · CUSIP 958102AT2

66 institutional holders -13 vs Q2 2025
1,736,4761.7m shares reported held*
$4.7bnreported value*
8 new 27 added 23 reduced 19 sold out net bought ≈ $114.4m (-9.6m 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 ≈ $2733.34.

Trends to Q3 2025

Institutional holders

Managers reporting a position, each quarter

050100Q4 24: 67Q1 25: 68Q2 25: 79Q3 25: 6666Q4 24Q1 25Q2 25Q3 25
Numbers
QuarterHolders
Q4 202467
Q1 202568
Q2 202579
Q3 202566

Buyers vs sellers

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

Bought or addedCut or sold out
50050Q1 25: 32 bought or addedQ1 25: 34 cut or sold outQ1 25Q2 25: 41 bought or addedQ2 25: 34 cut or sold outQ2 25Q3 25: 35 bought or addedQ3 25: 42 cut or sold outQ3 25
Numbers
QuarterBought or addedCut or sold out
Q1 20253234
Q2 20254134
Q3 20253542

Biggest buyers

CAPSTONE INVESTMENT ADVISORS, LLC New +54,500,000+54.5m
WHITEBOX ADVISORS LLC Added +42,500,000+42.5m
TWO SIGMA INVESTMENTS, LP Added +30,000,000+30.0m
Sculptor Capital LP Added +27,500,000+27.5m
Aequim Alternative Investments LP New +25,000,000+25.0m
Linden Advisors LP Added +18,750,000+18.8m
MILLENNIUM MANAGEMENT LLC Added +17,882,000+17.9m
BANK OF NOVA SCOTIA Added +17,500,000+17.5m
Alberta Investment Management Corp Added +15,000,000+15.0m
CAMDEN ASSET MANAGEMENT L P /CA Added +14,500,000+14.5m

Biggest sellers

LAZARD ASSET MANAGEMENT LLC Reduced -47,926,000-47.9m
SONA ASSET MANAGEMENT (US) LLC Sold out -35,000,000-35.0m
GLAZER CAPITAL, LLC Reduced -28,500,000-28.5m
Shaolin Capital Management LLC Sold out -25,000,000-25.0m
Portman Square Capital LLP Sold out -24,400,000-24.4m
SUSQUEHANNA ADVISORS GROUP, INC. Reduced -19,631,000-19.6m
Point72 Asset Management, L.P. Sold out -12,500,000-12.5m
FMR LLC Reduced -12,467,000-12.5m
ADVENT CAPITAL MANAGEMENT /DE/ Reduced -10,522,000-10.5m
TENOR CAPITAL MANAGEMENT Co., L.P. Sold out -10,000,000-10.0m

Holders, Q3 2025

#ManagerLocationShares Value% of their portfolioChangeShares change
1 WHITEBOX ADVISORS LLC 12.19% of their portfolio MINNEAPOLIS, MN 204,400,000204.4m $655.6m $655.6m 12.19% Added +42.5m +42,500,000
2 MILLENNIUM MANAGEMENT LLC 0.46% of their portfolio NEW YORK, NY 180,882,000180.9m $580.4m $580.4m 0.46% Added +17.9m +17,882,000
3 D. E. Shaw & Co., Inc. 0.37% of their portfolio New York, NY 141,937,000141.9m $455.4m $455.4m 0.37% Added +7.3m +7,325,000
4 BANK OF MONTREAL /CAN/ 0.11% of their portfolio TORONTO, A6 84,000,00084.0m $269.6m $269.6m 0.11% Added +12.5m +12,500,000
5 Calamos Advisors LLC 1.02% of their portfolio NAPERVILLE, IL 78,399,00078.4m $251.1m $251.1m 1.02% Reduced -34.0k -34,000
6 CITADEL ADVISORS LLC 0.19% of their portfolio MIAMI, FL 73,500,00073.5m $235.8m $235.8m 0.19% Added +5.5m +5,500,000
7 TWO SIGMA INVESTMENTS, LP 0.34% of their portfolio NEW YORK, NY 68,100,00068.1m $218.4m $218.4m 0.34% Added +30.0m +30,000,000
8 Linden Advisors LP 1.38% of their portfolio New York, NY 64,702,00064.7m $207.6m $207.6m 1.38% Added +18.8m +18,750,000
9 CAPSTONE INVESTMENT ADVISORS, LLC 1.53% of their portfolio NEW YORK, NY 54,500,00054.5m $174.9m $174.9m 1.53% New
10 Sculptor Capital LP 1.99% of their portfolio New York, NY 45,000,00045.0m $144.1m $144.1m 1.99% Added +27.5m +27,500,000
11 Alberta Investment Management Corp 1.05% of their portfolio EDMONTON, A0 45,000,00045.0m $144.1m $144.1m 1.05% Added +15.0m +15,000,000
12 LAZARD ASSET MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 37,656,00037.7m $1.2m $1.2m 0.00% Reduced -47.9m -47,926,000
13 CAMDEN ASSET MANAGEMENT L P /CA 2.60% of their portfolio Los Angeles, CA 36,775,00036.8m $118.0m $118.0m 2.60% Added +14.5m +14,500,000
14 VOYA INVESTMENT MANAGEMENT LLC 0.11% of their portfolio ATLANTA, GA 34,440,00034.4m $110.6m $110.6m 0.11% Added +10.5m +10,545,000
15 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 32,775,00032.8m $105.4m $105.4m 0.00% Added +2.0m +2,000,000
16 BNP PARIBAS FINANCIAL MARKETS 0.07% of their portfolio PARIS, I0 27,755,00027.8m $89.0m $89.0m 0.07% Reduced -4.6m -4,582,000
17 BANK OF NOVA SCOTIA 0.14% of their portfolio TORONTO, A6 25,000,00025.0m $80.4m $80.4m 0.14% Added +17.5m +17,500,000
18 Aequim Alternative Investments LP 1.78% of their portfolio MILL VALLEY, CA 25,000,00025.0m $80.2m $80.2m 1.78% New
19 FMR LLC 0.00% of their portfolio BOSTON, MA 24,589,00024.6m $78.9m $78.9m 0.00% Reduced -12.5m -12,467,000
20 BlackRock, Inc. 0.00% of their portfolio New York, NY 20,050,00020.1m $64.3m $64.3m 0.00% Added +210.0k +210,000
21 MacKay Shields LLC 2.10% of their portfolio New York, NY 19,228,00019.2m $61.7m $61.7m 2.10% Reduced -180.0k -180,000
22 Nuveen, LLC 0.02% of their portfolio CHARLOTTE, NC 17,775,00017.8m $57.0m $57.0m 0.02% Unchanged
23 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.08% of their portfolio TORONTO, A6 13,000,00013.0m $41.7m $41.7m 0.08% Reduced -5.0m -5,000,000
24 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.03% of their portfolio Toronto, A6 12,500,00012.5m $40.1m $40.1m 0.03% Unchanged
25 Thrivent Financial for Lutherans 0.07% of their portfolio Minneapolis, MN 11,840,00011.8m $38.1m $38.1m 0.07% Reduced -6.7m -6,745,000
26 SSI INVESTMENT MANAGEMENT LLC 2.41% of their portfolio Los Angeles, CA 11,002,00011.0m $35.3m $35.3m 2.41% Reduced -51.0k -51,000
27 Opti Capital Management, LP 2.21% of their portfolio New York, NY 11,000,00011.0m $35.3m $35.3m 2.21% New
28 SILVERBACK ASSET MANAGEMENT LLC 4.45% of their portfolio DURHAM, NC 10,695,00010.7m $34.3m $34.3m 4.45% Reduced -6.2m -6,197,000
29 LORD, ABBETT & CO. LLC 0.09% of their portfolio JERSEY CITY, NJ 9,871,0009.9m $31.7m $31.7m 0.09% Added +670.0k +670,000
30 AMERIPRISE FINANCIAL INC 0.01% of their portfolio MINNEAPOLIS, MN 7,500,0007.5m $24.1m $24.1m 0.01% Added +1.0m +1,000,000
31 Warberg Asset Management LLC 6.33% of their portfolio WINNETKA, IL 7,038,0007.0m $22.6m $22.6m 6.33% Added +12.0k +12,000
32 BARCLAYS PLC 0.01% of their portfolio LONDON, X0 5,984,0006.0m $19.2m $19.2m 0.01% Added +5.5m +5,456,000
33 KIM, LLC 1.81% of their portfolio WICHITA, KS 5,000,0005.0m $16.1m $16.1m 1.81% Added +500.0k +500,000
34 SUSQUEHANNA ADVISORS GROUP, INC. 0.00% of their portfolio BALA CYNWYD, PA 3,500,0003.5m $112.2k $112.2k 0.00% Reduced -19.6m -19,631,000
35 MACQUARIE GROUP LTD 0.01% of their portfolio Sydney, NSW 2000, C3 3,272,0003.3m $7.8m $7.8m 0.01% Added +1.4m +1,372,000
36 GLAZER CAPITAL, LLC 0.33% of their portfolio New York, NY 3,091,0003.1m $9.9m $9.9m 0.33% Reduced -28.5m -28,500,000
37 ARISTEIA CAPITAL, L.L.C. 0.30% of their portfolio GREENWICH, CT 3,000,0003.0m $9.6m $9.6m 0.30% Reduced -3.0m -3,000,000
38 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 2,909,0002.9m $9.3m $9.3m 0.00% Reduced -1.8m -1,771,000
39 ADVENT CAPITAL MANAGEMENT /DE/ 0.19% of their portfolio NEW YORK, NY 2,567,0002.6m $8.2m $8.2m 0.19% Reduced -10.5m -10,522,000
40 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 2,373,0002.4m $7.6m $7.6m 0.00% New
41 Universal- Beteiligungs- und Servicegesellschaft mbH 0.01% of their portfolio FRANKFURT AM MAIN, 2M 2,104,0002.1m $6.8m $6.8m 0.01% Added +230.0k +230,000
42 WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio Boston, MA 1,797,0001.8m $5.8m $5.8m 0.00% Reduced -525.0k -525,000
43 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 1,655,0001.7m $5.3m $5.3m 0.00% Added +499.0k +499,000
44 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 1,500,0001.5m $4.8m $4.8m 0.00% Reduced -2.5m -2,500,000
45 Nicholas Investment Partners, LP 0.31% of their portfolio RANCHO SANTA FE, CA 1,275,0001.3m $4.1m $4.1m 0.31% Unchanged
46 PALISADE CAPITAL MANAGEMENT, LP 0.11% of their portfolio FORT LEE, NJ 1,250,0001.2m $4.0m $4.0m 0.11% Reduced -250.0k -250,000
47 WESTWOOD HOLDINGS GROUP INC 0.03% of their portfolio DALLAS, TX 1,100,0001.1m $3.5m $3.5m 0.03% Unchanged
48 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 1,050,0001.1m $3.4m $3.4m 0.00% Added +500.0k +500,000
49 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 1,029,0001.0m $3.3m $3.3m 0.00% Reduced -3.6m -3,629,000
50 Central Pacific Bank - Trust Division 0.14% of their portfolio HONOLULU, HI 368,000368.0k $1.2m $1.2m 0.14% Unchanged
51 Kohlberg Kravis Roberts & Co. L.P. 0.02% of their portfolio NEW YORK, NY 330,000330.0k $1.1m $1.1m 0.02% Added +80.0k +80,000
52 NOMURA HOLDINGS INC 0.12% of their portfolio TOKYO, M0 215,689215.7k $25.9m $25.9m 0.12% Reduced -171.6k -171,638
53 Situational Awareness LP 0.82% of their portfolio SAN FRANCISCO, CA 152,821152.8k $18.3m $18.3m 0.82% New
54 OPPENHEIMER ASSET MANAGEMENT INC. 0.00% of their portfolio NEW YORK, NY 129,000129.0k $413.8k $413.8k 0.00% Reduced -1.0k -1,000
55 SEI INVESTMENTS CO 0.00% of their portfolio OAKS, PA 120,000120.0k $384.9k $384.9k 0.00% Unchanged
56 Calamos Wealth Management LLC 0.01% of their portfolio NAPERVILLE, IL 103,000103.0k $329.9k $329.9k 0.01% Added +2.0k +2,000
57 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 70,00070.0k $225.6k $225.6k 0.00% Reduced -50.0k -50,000
58 STEPHENS INC /AR/ 0.00% of their portfolio LITTLE ROCK, AR 40,00040.0k $128.3k $128.3k 0.00% Unchanged
59 VIRTUS ADVISERS, LLC 0.05% of their portfolio HARTFORD, CT 30,00030.0k $96.2k $96.2k 0.05% New
60 Balboa Wealth Partners 0.01% of their portfolio SCOTTSDALE, AZ 20,00020.0k $64.2k $64.2k 0.01% Unchanged
61 Stonegate Investment Group, LLC 0.00% of their portfolio BIRMINGHAM, AL 18,00018.0k $57.7k $57.7k 0.00% Added +5.0k +5,000
62 Boussard & Gavaudan Investment Management LLP 6.86% of their portfolio London, X0 17,53517.5k $55.4m $55.4m 6.86% Added +10.0k +10,035
63 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 9,0009.0k $28.9k $28.9k 0.00% Reduced -4.7m -4,744,000
64 FIFTH THIRD BANCORP 0.01% of their portfolio CINCINNATI, OH 8,0008.0k $2.6m $2.6m 0.01% New
65 K2 PRINCIPAL FUND, L.P. 2.52% of their portfolio TORONTO, A6 7,5007.5k $24.0m $24.0m 2.52% New
66 LOOMIS SAYLES & CO L P 0.00% of their portfolio BOSTON, MA 3,4313.4k $411.9k $411.9k 0.00% Reduced -8.2k -8,182