Vault-13

WESTERN DIGITAL CORP WDC 3 11.15.28

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

65 institutional holders +0 vs Q4 2025
43,345,84543.3m shares reported held*
$10.6bnreported value*
12 new 18 added 27 reduced 12 sold out net sold ≈ $72.2m (+38.8m 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 ($2.6m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $245.40.

Trends to Q1 2026

Institutional holders

Managers reporting a position, each quarter

050100Q4 24: 67Q1 25: 68Q2 25: 79Q3 25: 66Q4 25: 65Q1 26: 6565Q4 24Q1 25Q2 25Q3 25Q4 25Q1 26
Numbers
QuarterHolders
Q4 202467
Q1 202568
Q2 202579
Q3 202566
Q4 202565
Q1 202665

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 25Q4 25: 25 bought or addedQ4 25: 41 cut or sold outQ4 25Q1 26: 30 bought or addedQ1 26: 39 cut or sold outQ1 26
Numbers
QuarterBought or addedCut or sold out
Q1 20253234
Q2 20254134
Q3 20253542
Q4 20252541
Q1 20263039

Biggest buyers

BANK OF NOVA SCOTIA New +30,339,000+30.3m
Aequim Alternative Investments LP Added +27,000,000+27.0m
TWO SIGMA INVESTMENTS, LP Added +26,642,000+26.6m
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Added +22,000,000+22.0m
CAPSTONE INVESTMENT ADVISORS, LLC Added +21,500,000+21.5m
SSI INVESTMENT MANAGEMENT LLC New +7,827,000+7.8m
Universal- Beteiligungs- und Servicegesellschaft mbH Added +7,258,000+7.3m
CITADEL ADVISORS LLC Added +6,461,000+6.5m
LAZARD ASSET MANAGEMENT LLC Added +6,077,000+6.1m
BlackRock, Inc. Added +6,075,000+6.1m

Biggest sellers

Sculptor Capital LP Reduced -30,436,000-30.4m
BANK OF NOVA SCOTIA Sold out -27,136,000-27.1m
Linden Advisors LP Sold out -25,867,000-25.9m
Calamos Advisors LLC Reduced -20,793,000-20.8m
Alberta Investment Management Corp Reduced -20,000,000-20.0m
VOYA INVESTMENT MANAGEMENT LLC Reduced -10,605,000-10.6m
SSI INVESTMENT MANAGEMENT LLC Sold out -9,867,000-9.9m
BNP PARIBAS FINANCIAL MARKETS Reduced -9,758,000-9.8m
Warberg Asset Management LLC Sold out -5,731,000-5.7m
FMR LLC Reduced -5,510,000-5.5m

Holders, Q1 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 MILLENNIUM MANAGEMENT LLC 1.10% of their portfolio NEW YORK, NY 205,553,000205.6m $1.5bn $1.5bn 1.10% Added +5.5m +5,471,000
2 WHITEBOX ADVISORS LLC 20.71% of their portfolio MINNEAPOLIS, MN 204,400,000204.4m $1.5bn $1.5bn 20.71% Unchanged
3 D. E. Shaw & Co., Inc. 0.86% of their portfolio New York, NY 152,584,000152.6m $1.1bn $1.1bn 0.86% Reduced -1.9m -1,853,000
4 VOYA INVESTMENT MANAGEMENT LLC 0.94% of their portfolio ATLANTA, GA 125,515,000125.5m $898.9m $898.9m 0.94% Reduced -10.6m -10,605,000
5 CITADEL ADVISORS LLC 0.49% of their portfolio MIAMI, FL 97,265,00097.3m $696.7m $696.7m 0.49% Added +6.5m +6,461,000
6 TWO SIGMA INVESTMENTS, LP 0.53% of their portfolio NEW YORK, NY 89,226,00089.2m $638.7m $638.7m 0.53% Added +26.6m +26,642,000
7 CAPSTONE INVESTMENT ADVISORS, LLC 4.76% of their portfolio NEW YORK, NY 80,500,00080.5m $576.5m $576.5m 4.76% Added +21.5m +21,500,000
8 Sculptor Capital LP 5.66% of their portfolio New York, NY 70,000,00070.0m $502.1m $502.1m 5.66% Reduced -30.4m -30,436,000
9 Calamos Advisors LLC 1.54% of their portfolio NAPERVILLE, IL 55,616,00055.6m $398.9m $398.9m 1.54% Reduced -20.8m -20,793,000
10 Aequim Alternative Investments LP 7.71% of their portfolio MILL VALLEY, CA 55,500,00055.5m $397.5m $397.5m 7.71% Added +27.0m +27,000,000
11 LAZARD ASSET MANAGEMENT LLC 0.01% of their portfolio NEW YORK, NY 44,168,00044.2m $3.2m $3.2m 0.01% Added +6.1m +6,077,000
12 STATE STREET CORP 0.01% of their portfolio BOSTON, MA 34,150,00034.1m $244.9m $244.9m 0.01% Added +150.0k +150,000
13 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.38% of their portfolio TORONTO, A6 32,000,00032.0m $229.2m $229.2m 0.38% Added +22.0m +22,000,000
14 BANK OF MONTREAL /CAN/ 0.09% of their portfolio TORONTO, A6 31,407,00031.4m $225.1m $225.1m 0.09% Added +2.4m +2,407,000
15 BANK OF NOVA SCOTIA 0.38% of their portfolio TORONTO, A6 30,339,00030.3m $217.5m $217.5m 0.38% New
16 BlackRock, Inc. 0.00% of their portfolio New York, NY 26,500,00026.5m $189.7m $189.7m 0.00% Added +6.1m +6,075,000
17 Alberta Investment Management Corp 1.10% of their portfolio EDMONTON, A0 25,000,00025.0m $179.3m $179.3m 1.10% Reduced -20.0m -20,000,000
18 FMR LLC 0.01% of their portfolio BOSTON, MA 19,906,00019.9m $142.5m $142.5m 0.01% Reduced -5.5m -5,510,000
19 BNP PARIBAS FINANCIAL MARKETS 0.08% of their portfolio PARIS, I0 16,075,00016.1m $115.1m $115.1m 0.08% Reduced -9.8m -9,758,000
20 MacKay Shields LLC 4.06% of their portfolio New York, NY 15,476,00015.5m $110.8m $110.8m 4.06% Reduced -3.4m -3,406,000
21 Universal- Beteiligungs- und Servicegesellschaft mbH 0.11% of their portfolio FRANKFURT AM MAIN, 2M 9,167,0009.2m $65.9m $65.9m 0.11% Added +7.3m +7,258,000
22 SSI INVESTMENT MANAGEMENT LLC 3.86% of their portfolio Los Angeles, CA 7,827,0007.8m $56.0m $56.0m 3.86% New
23 AMERIPRISE FINANCIAL INC 0.01% of their portfolio MINNEAPOLIS, MN 7,003,0007.0m $50.1m $50.1m 0.01% Added +2.0m +2,000,000
24 LORD, ABBETT & CO. LLC 0.14% of their portfolio JERSEY CITY, NJ 6,046,0006.0m $43.3m $43.3m 0.14% Reduced -1.7m -1,717,000
25 ADVENT CAPITAL MANAGEMENT /DE/ 1.17% of their portfolio NEW YORK, NY 5,501,0005.5m $39.5m $39.5m 1.17% Added +2.1m +2,137,000
26 Thrivent Financial for Lutherans 0.06% of their portfolio Minneapolis, MN 4,579,0004.6m $32.8m $32.8m 0.06% Reduced -3.7m -3,671,000
27 Nuveen, LLC 0.01% of their portfolio CHARLOTTE, NC 4,450,0004.5m $31.9m $31.9m 0.01% Reduced -1.6m -1,575,000
28 DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main 0.02% of their portfolio FRANKFURT AM MAIN, 2M 3,650,0003.6m $26.2m $26.2m 0.02% New
29 JANE STREET GROUP, LLC 0.03% of their portfolio NEW YORK, NY 3,596,0003.6m $25.5m $25.5m 0.03% New
30 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.02% of their portfolio Toronto, A6 2,550,0002.5m $18.3m $18.3m 0.02% Reduced -4.6m -4,600,000
31 FRANKLIN RESOURCES INC 0.00% of their portfolio San Mateo, CA 2,414,0002.4m $17.3m $17.3m 0.00% Added +770.0k +770,000
32 Amundi 0.00% of their portfolio Paris, I0 2,400,0002.4m $17.2k $17.2k 0.00% New
33 BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.02% of their portfolio Paris, I0 2,400,0002.4m $17.2m $17.2m 0.02% New
34 PICTON MAHONEY ASSET MANAGEMENT 0.15% of their portfolio Toronto, A6 2,000,0002.0m $14.3m $14.3m 0.15% New
35 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 1,802,0001.8m $12.0m $12.0m 0.00% New
36 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 1,500,0001.5m $10.7m $10.7m 0.00% Unchanged
37 CITIGROUP INC 0.01% of their portfolio NEW YORK, NY 1,442,0001.4m $10.3m $10.3m 0.01% Reduced -108.0k -108,000
38 VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio San Antonio, TX 1,000,0001.0m $7.2m $7.2m 0.00% New
39 Nicholas Investment Partners, LP 0.42% of their portfolio RANCHO SANTA FE, CA 815,000815.0k $5.8m $5.8m 0.42% Reduced -460.0k -460,000
40 NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 0.01% of their portfolio PHILADELPHIA, PA 718,000718.0k $5.1m $5.1m 0.01% Reduced -172.0k -172,000
41 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 649,000649.0k $4.7m $4.7m 0.00% Reduced -451.0k -451,000
42 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 490,000490.0k $3.5m $3.5m 0.00% Reduced -60.0k -60,000
43 Capital World Investors 0.00% of their portfolio LOS ANGELES, CA 490,000490.0k $3.5m $3.5m 0.00% Added +18.0k +18,000
44 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 380,000380.0k $2.7m $2.7m 0.00% Added +330.0k +330,000
45 Central Pacific Bank - Trust Division 0.31% of their portfolio HONOLULU, HI 340,000340.0k $2.4m $2.4m 0.31% Unchanged
46 WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio Boston, MA 228,000228.0k $1.6m $1.6m 0.00% Reduced -862.0k -862,000
47 Ares Systematic Credit Ltd 1.05% of their portfolio LONDON, X0 200,000200.0k $1.3m $1.3m 1.05% Unchanged
48 SG Americas Securities, LLC 0.14% of their portfolio NEW YORK, NY 180,000180.0k $127.8m $127.8m 0.14% New
49 Kohlberg Kravis Roberts & Co. L.P. 0.02% of their portfolio NEW YORK, NY 180,000180.0k $1.3m $1.3m 0.02% Unchanged
50 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 155,000155.0k $1.1m $1.1m 0.00% Unchanged
51 SEI INVESTMENTS CO 0.00% of their portfolio OAKS, PA 120,000120.0k $859.0k $859.0k 0.00% Unchanged
52 UBS Group AG 0.00% of their portfolio ZURICH, V8 119,000119.0k $851.8k $851.8k 0.00% New
53 Virtus Fixed Income Advisers, LLC 0.63% of their portfolio HARTFORD, CT 107,000107.0k $765.9k $765.9k 0.63% New
54 Calamos Wealth Management LLC 0.03% of their portfolio NAPERVILLE, IL 105,000105.0k $753.1k $753.1k 0.03% Added +1.0k +1,000
55 AQR Arbitrage LLC 0.01% of their portfolio Greenwich, CT 75,00075.0k $537.1k $537.1k 0.01% Reduced -15.0k -15,000
56 OPPENHEIMER ASSET MANAGEMENT INC. 0.01% of their portfolio NEW YORK, NY 66,00066.0k $472.4k $472.4k 0.01% Reduced -61.0k -61,000
57 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 65,00065.0k $465.3k $465.3k 0.00% Reduced -1.3m -1,305,000
58 NOMURA HOLDINGS INC 0.06% of their portfolio TOKYO, M0 27,55527.6k $7.5m $7.5m 0.06% Added +22 +22
59 Boussard & Gavaudan Investment Management LLP 17.87% of their portfolio London, X0 27,45027.4k $186.1m $186.1m 17.87% Reduced -2.0k -2,049
60 STEPHENS INC /AR/ 0.00% of their portfolio LITTLE ROCK, AR 20,00020.0k $143.2k $143.2k 0.00% Reduced -20.0k -20,000
61 VIRTUS ADVISERS, LLC 0.05% of their portfolio HARTFORD, CT 16,00016.0k $114.5k $114.5k 0.05% Reduced -14.0k -14,000
62 LOOMIS SAYLES & CO L P 0.01% of their portfolio BOSTON, MA 14,81014.8k $4.0m $4.0m 0.01% Reduced -18.9k -18,891
63 MML INVESTORS SERVICES, LLC 0.00% of their portfolio SPRINGFIELD, MA 14,00014.0k $100.2k $100.2k 0.00% Unchanged
64 Balboa Wealth Partners 0.01% of their portfolio SCOTTSDALE, AZ 11,00011.0k $78.7k $78.7k 0.01% Reduced -8.0k -8,000
65 ODDO BHF ASSET MANAGEMENT SAS 0.01% of their portfolio PARIS, I0 3030 $215.3k $215.3k 0.01% Reduced -20 -20