Vault-13

IRHYTHM TECHNOLOGIES INC IRTC 1.5 09.01.29

NOTE 1.500% 9/0 · US DOMESTIC · CUSIP 450056AB2

52 institutional holders +5 vs Q4 2025
33,707,00033.7m shares reported held*
$647.0mreported value*
20 new 9 added 8 reduced 15 sold out net sold ≈ $9.7m (+27.6m 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 ≈ $19.19.

Trends to Q1 2026

Institutional holders

Managers reporting a position, each quarter

0204060Q1 25: 40Q2 25: 38Q3 25: 45Q4 25: 47Q1 26: 5252Q1 25Q2 25Q3 25Q4 25Q1 26
Numbers
QuarterHolders
Q1 202540
Q2 202538
Q3 202545
Q4 202547
Q1 202652

Buyers vs sellers

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

Bought or addedCut or sold out
40040Q2 25: 20 bought or addedQ2 25: 20 cut or sold outQ2 25Q3 25: 20 bought or addedQ3 25: 19 cut or sold outQ3 25Q4 25: 21 bought or addedQ4 25: 20 cut or sold outQ4 25Q1 26: 29 bought or addedQ1 26: 23 cut or sold outQ1 26
Numbers
QuarterBought or addedCut or sold out
Q2 20252020
Q3 20252019
Q4 20252120
Q1 20262923

Biggest buyers

STEELHEAD PARTNERS LLC New +36,122,000+36.1m
Opti Capital Management, LP New +35,000,000+35.0m
Point72 Asset Management, L.P. New +33,000,000+33.0m
LMR Partners LLP New +30,000,000+30.0m
TUDOR INVESTMENT CORP ET AL New +20,000,000+20.0m
TENOR CAPITAL MANAGEMENT Co., L.P. Added +16,446,000+16.4m
Jain Global LLC New +15,000,000+15.0m
MILLENNIUM MANAGEMENT LLC New +11,000,000+11.0m
BlackRock, Inc. Added +9,900,000+9.9m
DeepCurrents Investment Group LLC Added +7,000,000+7.0m

Biggest sellers

VOYA INVESTMENT MANAGEMENT LLC Sold out -114,420,000-114.4m
BRAIDWELL LP Sold out -52,000,000-52.0m
LORD, ABBETT & CO. LLC Sold out -20,979,000-21.0m
Linden Advisors LP Reduced -20,000,000-20.0m
TUDOR INVESTMENT CORP ET AL Sold out -20,000,000-20.0m
CITADEL ADVISORS LLC Sold out -15,291,000-15.3m
READYSTATE ASSET MANAGEMENT LP Reduced -8,000,000-8.0m
SUSQUEHANNA ADVISORS GROUP, INC. Sold out -6,500,000-6.5m
SSI INVESTMENT MANAGEMENT LLC Sold out -4,642,000-4.6m
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Reduced -2,000,000-2.0m

Holders, Q1 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 TENOR CAPITAL MANAGEMENT Co., L.P. 1.44% of their portfolio NEW YORK, NY 85,000,00085.0m $93.2m $93.2m 1.44% Added +16.4m +16,446,000
2 BlackRock, Inc. 0.00% of their portfolio New York, NY 57,315,00057.3m $62.5m $62.5m 0.00% Added +9.9m +9,900,000
3 WOLVERINE ASSET MANAGEMENT LLC 0.80% of their portfolio CHICAGO, IL 47,013,00047.0m $51.5m $51.5m 0.80% Unchanged
4 STEELHEAD PARTNERS LLC 2.85% of their portfolio SEATTLE, WA 36,122,00036.1m $39.7m $39.7m 2.85% New
5 Opti Capital Management, LP 2.77% of their portfolio New York, NY 35,000,00035.0m $38.5m $38.5m 2.77% New
6 DeepCurrents Investment Group LLC 1.56% of their portfolio NEW YORK, NY 34,500,00034.5m $37.9m $37.9m 1.56% Added +7.0m +7,000,000
7 Point72 Asset Management, L.P. 0.06% of their portfolio STAMFORD, CT 33,000,00033.0m $36.3m $36.3m 0.06% New
8 MacKay Shields LLC 1.31% of their portfolio New York, NY 32,631,00032.6m $35.8m $35.8m 1.31% Reduced -51.0k -51,000
9 LMR Partners LLP 0.30% of their portfolio LONDON, X0 30,000,00030.0m $32.9m $32.9m 0.30% New
10 TUDOR INVESTMENT CORP ET AL 0.12% of their portfolio STAMFORD, CT 20,000,00020.0m $22.0m $22.0m 0.12% New
11 Alberta Investment Management Corp 0.14% of their portfolio EDMONTON, A0 20,000,00020.0m $22.0m $22.0m 0.14% Unchanged
12 Jain Global LLC 0.21% of their portfolio NEW YORK, NY 15,000,00015.0m $16.5m $16.5m 0.21% New
13 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 13,710,00013.7m $15.0m $15.0m 0.00% Added +210.0k +210,000
14 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.02% of their portfolio TORONTO, A6 13,000,00013.0m $14.2m $14.2m 0.02% Reduced -2.0m -2,000,000
15 MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio NEW YORK, NY 11,000,00011.0m $12.1m $12.1m 0.01% New
16 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 10,343,00010.3m $11.2m $11.2m 0.00% Added +5.8m +5,850,000
17 READYSTATE ASSET MANAGEMENT LP 0.64% of their portfolio CHICAGO, IL 10,000,00010.0m $11.0m $11.0m 0.64% Reduced -8.0m -8,000,000
18 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 8,900,0008.9m $9.7m $9.7m 0.00% Added +2.9m +2,900,000
19 FMR LLC 0.00% of their portfolio BOSTON, MA 7,678,0007.7m $8.4m $8.4m 0.00% Unchanged
20 Lombard Odier Asset Management (Europe) Ltd 0.35% of their portfolio LONDON, X0 5,828,0005.8m $6.4m $6.4m 0.35% New
21 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 5,097,0005.1m $5.6m $5.6m 0.00% Added +3.7m +3,710,000
22 Calamos Advisors LLC 0.02% of their portfolio NAPERVILLE, IL 5,000,0005.0m $5.5m $5.5m 0.02% Reduced -82.0k -82,000
23 SSI INVESTMENT MANAGEMENT LLC 0.35% of their portfolio Los Angeles, CA 4,636,0004.6m $5.1m $5.1m 0.35% New
24 Linden Advisors LP 0.03% of their portfolio New York, NY 4,086,0004.1m $4.5m $4.5m 0.03% Reduced -20.0m -20,000,000
25 SHENKMAN CAPITAL MANAGEMENT INC 0.54% of their portfolio NEW YORK, NY 4,000,0004.0m $4.5m $4.5m 0.54% New
26 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 3,950,0004.0m $4.3m $4.3m 0.00% Added +2.5m +2,500,000
27 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 3,475,0003.5m $3.8m $3.8m 0.00% Unchanged
28 STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio MADISON, WI 3,000,0003.0m $3.3m $3.3m 0.01% Unchanged
29 Balyasny Asset Management L.P. 0.01% of their portfolio Chicago, IL 3,000,0003.0m $3.3m $3.3m 0.01% New
30 BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.00% of their portfolio Paris, I0 2,500,0002.5m $2.7m $2.7m 0.00% Unchanged
31 Jefferies Financial Group Inc. 0.03% of their portfolio NEW YORK, NY 2,212,0002.2m $2.4m $2.4m 0.03% Reduced -21.0k -21,000
32 Warberg Asset Management LLC 0.64% of their portfolio WINNETKA, IL 2,000,0002.0m $2.2m $2.2m 0.64% New
33 Man Group plc 0.00% of their portfolio LONDON, X0 1,475,0001.5m $1.6m $1.6m 0.00% New
34 RWC Asset Management LLP 0.07% of their portfolio LONDON, X0 1,473,0001.5m $1.6m $1.6m 0.07% New
35 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 1,400,0001.4m $1.5m $1.5m 0.00% New
36 OAKTREE CAPITAL MANAGEMENT LP 0.03% of their portfolio LOS ANGELES, CA 1,350,0001.4m $1.5m $1.5m 0.03% New
37 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 607,000607.0k $666.1k $666.1k 0.00% Added +1.0k +1,000
38 Kohlberg Kravis Roberts & Co. L.P. 0.01% of their portfolio NEW YORK, NY 450,000450.0k $493.2k $493.2k 0.01% Unchanged
39 Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio ZURICH, V8 400,000400.0k $440.4k $440.4k 0.00% Unchanged
40 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 312,000312.0k $340.4k $340.4k 0.00% Reduced -1.4m -1,440,000
41 SEI INVESTMENTS CO 0.00% of their portfolio OAKS, PA 269,000269.0k $293.5k $293.5k 0.00% Unchanged
42 Central Pacific Bank - Trust Division 0.03% of their portfolio HONOLULU, HI 249,000249.0k $271.7k $271.7k 0.03% Unchanged
43 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 200,000200.0k $219.5k $219.5k 0.00% Unchanged
44 OPPENHEIMER ASSET MANAGEMENT INC. 0.00% of their portfolio NEW YORK, NY 70,00070.0k $76.4k $76.4k 0.00% Reduced -1.0k -1,000
45 VIRTUS ADVISERS, LLC 0.02% of their portfolio HARTFORD, CT 41,00041.0k $44.7k $44.7k 0.02% Unchanged
46 CSS LLC/IL 0.00% of their portfolio CHICAGO, IL 23,00023.0k $25.2k $25.2k 0.00% New
47 STEPHENS INC /AR/ 0.00% of their portfolio LITTLE ROCK, AR 21,00021.0k $22.9k $22.9k 0.00% Unchanged
48 UBS Group AG 0.00% of their portfolio ZURICH, V8 17,00017.0k $18.5k $18.5k 0.00% New
49 Boussard & Gavaudan Investment Management LLP 1.15% of their portfolio London, X0 11,00011.0k $12.0m $12.0m 1.15% New
50 Balboa Wealth Partners 0.00% of their portfolio SCOTTSDALE, AZ 11,00011.0k $12.0k $12.0k 0.00% Unchanged
51 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 3,0003.0k $3.0k $3.0k 0.00% New
52 Alken Asset Management Ltd 3.72% of their portfolio LONDON, X0 1,9001.9k $2.1m $2.1m 3.72% Unchanged