Vault-13

WESTERN DIGITAL CORP WDC 3 11.15.28

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

65 institutional holders -1 vs Q3 2025
4,562,7834.6m shares reported held*
$8.4bnreported value*
8 new 17 added 30 reduced 11 sold out net bought ≈ $42.2m (+2.8m 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. Holder counts are more reliable. Implied quarter-end price ≈ $1848.51.

Trends to Q4 2025

Institutional holders

Managers reporting a position, each quarter

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

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 25
Numbers
QuarterBought or addedCut or sold out
Q1 20253234
Q2 20254134
Q3 20253542
Q4 20252541

Biggest buyers

VOYA INVESTMENT MANAGEMENT LLC Added +101,680,000+101.7m
Sculptor Capital LP Added +55,436,000+55.4m
MILLENNIUM MANAGEMENT LLC Added +19,200,000+19.2m
CITADEL ADVISORS LLC Added +17,304,000+17.3m
D. E. Shaw & Co., Inc. Added +12,500,000+12.5m
CAPSTONE INVESTMENT ADVISORS, LLC Added +4,500,000+4.5m
Amundi New +3,600,000+3.6m
Aequim Alternative Investments LP Added +3,500,000+3.5m
BANK OF NOVA SCOTIA Added +2,136,000+2.1m
FRANKLIN RESOURCES INC New +1,644,000+1.6m

Biggest sellers

BANK OF MONTREAL /CAN/ Reduced -55,000,000-55.0m
Linden Advisors LP Reduced -38,835,000-38.8m
CAMDEN ASSET MANAGEMENT L P /CA Sold out -36,775,000-36.8m
Nuveen, LLC Reduced -11,750,000-11.8m
Opti Capital Management, LP Sold out -11,000,000-11.0m
SILVERBACK ASSET MANAGEMENT LLC Sold out -10,695,000-10.7m
TWO SIGMA INVESTMENTS, LP Reduced -5,516,000-5.5m
MANUFACTURERS LIFE INSURANCE COMPANY, THE Reduced -5,350,000-5.3m
BARCLAYS PLC Reduced -4,971,000-5.0m
Thrivent Financial for Lutherans Reduced -3,590,000-3.6m

Holders, Q4 2025

#ManagerLocationShares Value% of their portfolioChangeShares change
1 WHITEBOX ADVISORS LLC 15.63% of their portfolio MINNEAPOLIS, MN 204,400,000204.4m $936.9m $936.9m 15.63% Unchanged
2 MILLENNIUM MANAGEMENT LLC 0.66% of their portfolio NEW YORK, NY 200,082,000200.1m $918.1m $918.1m 0.66% Added +19.2m +19,200,000
3 D. E. Shaw & Co., Inc. 0.54% of their portfolio New York, NY 154,437,000154.4m $708.9m $708.9m 0.54% Added +12.5m +12,500,000
4 VOYA INVESTMENT MANAGEMENT LLC 0.62% of their portfolio ATLANTA, GA 136,120,000136.1m $624.3m $624.3m 0.62% Added +101.7m +101,680,000
5 Sculptor Capital LP 5.50% of their portfolio New York, NY 100,436,000100.4m $460.9m $460.9m 5.50% Added +55.4m +55,436,000
6 CITADEL ADVISORS LLC 0.28% of their portfolio MIAMI, FL 90,804,00090.8m $416.6m $416.6m 0.28% Added +17.3m +17,304,000
7 Calamos Advisors LLC 1.44% of their portfolio NAPERVILLE, IL 76,409,00076.4m $350.6m $350.6m 1.44% Reduced -2.0m -1,990,000
8 TWO SIGMA INVESTMENTS, LP 0.43% of their portfolio NEW YORK, NY 62,584,00062.6m $286.9m $286.9m 0.43% Reduced -5.5m -5,516,000
9 CAPSTONE INVESTMENT ADVISORS, LLC 2.20% of their portfolio NEW YORK, NY 59,000,00059.0m $270.6m $270.6m 2.20% Added +4.5m +4,500,000
10 Alberta Investment Management Corp 1.24% of their portfolio EDMONTON, A0 45,000,00045.0m $206.5m $206.5m 1.24% Unchanged
11 LAZARD ASSET MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 38,091,00038.1m $1.7m $1.7m 0.00% Added +435.0k +435,000
12 STATE STREET CORP 0.01% of their portfolio BOSTON, MA 34,000,00034.0m $156.1m $156.1m 0.01% Added +1.2m +1,225,000
13 BANK OF MONTREAL /CAN/ 0.05% of their portfolio TORONTO, A6 29,000,00029.0m $133.1m $133.1m 0.05% Reduced -55.0m -55,000,000
14 Aequim Alternative Investments LP 2.58% of their portfolio MILL VALLEY, CA 28,500,00028.5m $130.7m $130.7m 2.58% Added +3.5m +3,500,000
15 BANK OF NOVA SCOTIA 0.18% of their portfolio TORONTO, A6 27,136,00027.1m $124.6m $124.6m 0.18% Added +2.1m +2,136,000
16 Linden Advisors LP 0.73% of their portfolio New York, NY 25,867,00025.9m $118.7m $118.7m 0.73% Reduced -38.8m -38,835,000
17 BNP PARIBAS FINANCIAL MARKETS 0.07% of their portfolio PARIS, I0 25,833,00025.8m $118.4m $118.4m 0.07% Reduced -1.9m -1,922,000
18 FMR LLC 0.01% of their portfolio BOSTON, MA 25,416,00025.4m $116.5m $116.5m 0.01% Added +827.0k +827,000
19 BlackRock, Inc. 0.00% of their portfolio New York, NY 20,425,00020.4m $93.6m $93.6m 0.00% Added +375.0k +375,000
20 MacKay Shields LLC 3.03% of their portfolio New York, NY 18,882,00018.9m $86.6m $86.6m 3.03% Reduced -346.0k -346,000
21 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.08% of their portfolio TORONTO, A6 10,000,00010.0m $45.9m $45.9m 0.08% Reduced -3.0m -3,000,000
22 SSI INVESTMENT MANAGEMENT LLC 3.07% of their portfolio Los Angeles, CA 9,867,0009.9m $45.2m $45.2m 3.07% Reduced -1.1m -1,135,000
23 Thrivent Financial for Lutherans 0.07% of their portfolio Minneapolis, MN 8,250,0008.2m $37.8m $37.8m 0.07% Reduced -3.6m -3,590,000
24 LORD, ABBETT & CO. LLC 0.11% of their portfolio JERSEY CITY, NJ 7,763,0007.8m $35.6m $35.6m 0.11% Reduced -2.1m -2,108,000
25 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.03% of their portfolio Toronto, A6 7,150,0007.2m $32.8m $32.8m 0.03% Reduced -5.3m -5,350,000
26 Nuveen, LLC 0.01% of their portfolio CHARLOTTE, NC 6,025,0006.0m $27.6m $27.6m 0.01% Reduced -11.8m -11,750,000
27 Warberg Asset Management LLC 7.90% of their portfolio WINNETKA, IL 5,731,0005.7m $26.3m $26.3m 7.90% Reduced -1.3m -1,307,000
28 AMERIPRISE FINANCIAL INC 0.01% of their portfolio MINNEAPOLIS, MN 5,003,0005.0m $22.9m $22.9m 0.01% Reduced -2.5m -2,497,000
29 Amundi 0.45% of their portfolio Paris, I0 3,600,0003.6m $1.7bn $1.7bn 0.45% New
30 ADVENT CAPITAL MANAGEMENT /DE/ 0.36% of their portfolio NEW YORK, NY 3,364,0003.4m $15.4m $15.4m 0.36% Added +797.0k +797,000
31 Universal- Beteiligungs- und Servicegesellschaft mbH 0.01% of their portfolio FRANKFURT AM MAIN, 2M 1,909,0001.9m $8.9m $8.9m 0.01% Reduced -195.0k -195,000
32 FRANKLIN RESOURCES INC 0.00% of their portfolio San Mateo, CA 1,644,0001.6m $7.5m $7.5m 0.00% New
33 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 1,550,0001.6m $7.1m $7.1m 0.00% Added +1.5m +1,541,000
34 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 1,500,0001.5m $6.9m $6.9m 0.00% Unchanged
35 KIM, LLC 0.79% of their portfolio WICHITA, KS 1,500,0001.5m $6.9m $6.9m 0.79% Reduced -3.5m -3,500,000
36 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 1,370,0001.4m $6.3m $6.3m 0.00% Reduced -1.5m -1,539,000
37 Nicholas Investment Partners, LP 0.43% of their portfolio RANCHO SANTA FE, CA 1,275,0001.3m $5.8m $5.8m 0.43% Unchanged
38 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 1,100,0001.1m $5.0m $5.0m 0.00% Reduced -555.0k -555,000
39 WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio Boston, MA 1,090,0001.1m $5.0m $5.0m 0.00% Reduced -707.0k -707,000
40 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 1,013,0001.0m $4.6m $4.6m 0.00% Reduced -5.0m -4,971,000
41 PALISADE CAPITAL MANAGEMENT, LP 0.13% of their portfolio FORT LEE, NJ 989,000989.0k $4.5m $4.5m 0.13% Reduced -261.0k -261,000
42 NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 0.01% of their portfolio PHILADELPHIA, PA 890,000890.0k $4.1m $4.1m 0.01% First filing
43 WESTWOOD HOLDINGS GROUP INC 0.01% of their portfolio DALLAS, TX 800,000800.0k $800.0k $800.0k 0.01% Reduced -300.0k -300,000
44 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 550,000550.0k $2.5m $2.5m 0.00% Reduced -500.0k -500,000
45 Capital World Investors 0.00% of their portfolio LOS ANGELES, CA 472,000472.0k $2.2m $2.2m 0.00% New
46 Central Pacific Bank - Trust Division 0.19% of their portfolio HONOLULU, HI 340,000340.0k $1.6m $1.6m 0.19% Reduced -28.0k -28,000
47 Ares Systematic Credit Ltd 0.75% of their portfolio LONDON, X0 200,000200.0k $918.0k $918.0k 0.75% First filing
48 Kohlberg Kravis Roberts & Co. L.P. 0.01% of their portfolio NEW YORK, NY 180,000180.0k $825.5k $825.5k 0.01% Reduced -150.0k -150,000
49 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 155,000155.0k $710.0k $710.0k 0.00% Reduced -874.0k -874,000
50 OPPENHEIMER ASSET MANAGEMENT INC. 0.01% of their portfolio NEW YORK, NY 127,000127.0k $582.1k $582.1k 0.01% Reduced -2.0k -2,000
51 SEI INVESTMENTS CO 0.00% of their portfolio OAKS, PA 120,000120.0k $550.1k $550.1k 0.00% Unchanged
52 Calamos Wealth Management LLC 0.02% of their portfolio NAPERVILLE, IL 104,000104.0k $477.2k $477.2k 0.02% Added +1.0k +1,000
53 AQR Arbitrage LLC 0.01% of their portfolio Greenwich, CT 90,00090.0k $412.8k $412.8k 0.01% New
54 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 50,00050.0k $229.6k $229.6k 0.00% Reduced -20.0k -20,000
55 STEPHENS INC /AR/ 0.00% of their portfolio LITTLE ROCK, AR 40,00040.0k $183.4k $183.4k 0.00% Unchanged
56 LOOMIS SAYLES & CO L P 0.01% of their portfolio BOSTON, MA 33,70133.7k $5.8m $5.8m 0.01% Added +30.3k +30,270
57 VIRTUS ADVISERS, LLC 0.07% of their portfolio HARTFORD, CT 30,00030.0k $137.5k $137.5k 0.07% Unchanged
58 Boussard & Gavaudan Investment Management LLP 10.48% of their portfolio London, X0 29,49929.5k $138.4m $138.4m 10.48% Added +12.0k +11,964
59 NOMURA HOLDINGS INC 0.01% of their portfolio TOKYO, M0 27,53327.5k $4.7m $4.7m 0.01% Reduced -188.2k -188,156
60 Balboa Wealth Partners 0.01% of their portfolio SCOTTSDALE, AZ 19,00019.0k $87.2k $87.2k 0.01% Reduced -1.0k -1,000
61 NewEdge Advisors, LLC 0.00% of their portfolio NEW ORLEANS, LA 17,00017.0k $77.9k $77.9k 0.00% New
62 MML INVESTORS SERVICES, LLC 0.00% of their portfolio SPRINGFIELD, MA 14,00014.0k $64.2k $64.2k 0.00% New
63 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 5,0005.0k $22.9k $22.9k 0.00% New
64 CoreCap Advisors, LLC 0.00% of their portfolio SOUTHFIELD, MI 4,0004.0k $18.4k $18.4k 0.00% New
65 ODDO BHF ASSET MANAGEMENT SAS 0.01% of their portfolio PARIS, I0 5050 $229.7k $229.7k 0.01% Not comparable