IRHYTHM TECHNOLOGIES INC IRTC 1.5 09.01.29
NOTE 1.500% 9/0 · US DOMESTIC · CUSIP 450056AB2
47
institutional holders
+2 vs Q3 2025
6.1m
shares reported held*
$822.3mreported value*
11 new
10 added
11 reduced
9 sold out
net sold ≈ $37.2m (+314.0k 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 ≈ $134.34.
Trends to Q4 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q1 2025 | 40 |
| Q2 2025 | 38 |
| Q3 2025 | 45 |
| Q4 2025 | 47 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Bought or addedCut or sold out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2025 | 20 | 20 |
| Q3 2025 | 20 | 19 |
| Q4 2025 | 21 | 20 |
Biggest buyers
| DeepCurrents Investment Group LLC | New | +27.5m |
| TENOR CAPITAL MANAGEMENT Co., L.P. | Added | +20.6m |
| Alberta Investment Management Corp | New | +20.0m |
| VOYA INVESTMENT MANAGEMENT LLC | Added | +13.7m |
| SUSQUEHANNA ADVISORS GROUP, INC. | Added | +4.0m |
| MacKay Shields LLC | Added | +1.8m |
| BNP PARIBAS FINANCIAL MARKETS | Added | +1.6m |
| AMERIPRISE FINANCIAL INC | Added | +1.5m |
| GOLDMAN SACHS GROUP INC | New | +1.4m |
| MORGAN STANLEY | Added | +1.4m |
Biggest sellers
| Linden Advisors LP | Reduced | -68.0m |
| LAZARD ASSET MANAGEMENT LLC | Reduced | -14.2m |
| WOLVERINE ASSET MANAGEMENT LLC | Reduced | -10.0m |
| BRAIDWELL LP | Reduced | -10.0m |
| Sculptor Capital LP | Sold out | -8.5m |
| Universal- Beteiligungs- und Servicegesellschaft mbH | Sold out | -6.6m |
| JPMORGAN CHASE & CO | Reduced | -4.5m |
| BlackRock, Inc. | Reduced | -3.2m |
| RWC Asset Management LLP | Sold out | -1.7m |
| Man Group plc | Sold out | -1.6m |
Holders, Q4 2025
| Manager | Shares | Change |
|---|---|---|
| VOYA INVESTMENT MANAGEMENT LLC 0.16% of their portfolio | 114.4m $160.2m | Added +13.7m |
| TENOR CAPITAL MANAGEMENT Co., L.P. 1.36% of their portfolio | 68.6m $96.4m | Added +20.6m |
| BRAIDWELL LP 2.33% of their portfolio | 52.0m $72.8m | Reduced -10.0m |
| BlackRock, Inc. 0.00% of their portfolio | 47.4m $66.1m | Reduced -3.2m |
| WOLVERINE ASSET MANAGEMENT LLC 0.94% of their portfolio | 47.0m $65.8m | Reduced -10.0m |
| MacKay Shields LLC 1.60% of their portfolio | 32.7m $45.7m | Added +1.8m |
| DeepCurrents Investment Group LLC 1.43% of their portfolio | 27.5m $38.5m | New |
| Linden Advisors LP 0.21% of their portfolio | 24.1m $33.7m | Reduced -68.0m |
| LORD, ABBETT & CO. LLC 0.09% of their portfolio | 21.0m $29.3m | Added +327.0k |
| TUDOR INVESTMENT CORP ET AL 0.15% of their portfolio | 20.0m $28.0m | Unchanged |
| Alberta Investment Management Corp 0.17% of their portfolio | 20.0m $28.0m | New |
| READYSTATE ASSET MANAGEMENT LP 1.11% of their portfolio | 18.0m $25.2m | Unchanged |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 15.3m $21.4m | Added +291.0k |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.04% of their portfolio | 15.0m $21.0m | Unchanged |
| STATE STREET CORP 0.00% of their portfolio | 13.5m $18.9m | Reduced -300.0k |
| FMR LLC 0.00% of their portfolio | 7.7m $10.7m | Unchanged |
| SUSQUEHANNA ADVISORS GROUP, INC. 0.00% of their portfolio | 6.5m $90.9k | Added +4.0m |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 6.0m $8.4m | Added +1.5m |
| Calamos Advisors LLC 0.03% of their portfolio | 5.1m $7.1m | Added +17.0k |
| SSI INVESTMENT MANAGEMENT LLC 0.44% of their portfolio | 4.6m $6.5m | Unchanged |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 4.5m $4.4m | Reduced -4.5m |
| Invesco Ltd. 0.00% of their portfolio | 3.5m $4.8m | Unchanged |
| STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio | 3.0m $4.2m | Unchanged |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.00% of their portfolio | 2.5m $3.5m | Unchanged |
| Jefferies Financial Group Inc. 0.03% of their portfolio | 2.2m $3.1m | Reduced -164.0k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 1.9m $2.6m | Added +1.6m |
| MORGAN STANLEY 0.00% of their portfolio | 1.8m $2.4m | Added +1.4m |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 1.4m $2.0m | New |
| Ares Systematic Credit Ltd 1.60% of their portfolio | 1.4m $2.0m | First filing |
| CITIGROUP INC 0.00% of their portfolio | 1.4m $1.9m | Reduced -201.0k |
| LAZARD ASSET MANAGEMENT LLC 0.00% of their portfolio | 1.2m $16.9k | Reduced -14.2m |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 606.0k $595.7k | New |
| Kohlberg Kravis Roberts & Co. L.P. 0.01% of their portfolio | 450.0k $630.0k | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 400.0k $559.0k | Reduced -200.0k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 387.0k $539.9k | New |
| SEI INVESTMENTS CO 0.00% of their portfolio | 269.0k $375.3k | Unchanged |
| Central Pacific Bank - Trust Division 0.04% of their portfolio | 249.0k $347.4k | Unchanged |
| Bank of New York Mellon Corp 0.00% of their portfolio | 200.0k $196.6k | New |
| OPPENHEIMER ASSET MANAGEMENT INC. 0.00% of their portfolio | 71.0k $99.0k | New |
| VIRTUS ADVISERS, LLC 0.03% of their portfolio | 41.0k $57.2k | Reduced -45.0k |
| LOOMIS SAYLES & CO L P 0.00% of their portfolio | 21.9k $3.9m | Unchanged |
| STEPHENS INC /AR/ 0.00% of their portfolio | 21.0k $29.3k | New |
| NewEdge Advisors, LLC 0.00% of their portfolio | 20.0k $27.9k | New |
| &PARTNERS 0.00% of their portfolio | 16.0k $22.3k | Unchanged |
| Balboa Wealth Partners 0.00% of their portfolio | 11.0k $15.2k | New |
| CoreCap Advisors, LLC 0.00% of their portfolio | 2.0k $2.8k | New |
| Alken Asset Management Ltd 0.04% of their portfolio | 1.9k $2.6k | Unchanged |