Somnigroup International Inc.
US ˙ NYSE ˙ US88023U1016

SecuritySGI / Somnigroup International Inc.
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership142,210 shares
Latest Disclosed Value $ 10,516,157
Janus Henderson Group Plc reports 47.82% decrease in ownership of SGI / Somnigroup International Inc.

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 142,210 shares of Somnigroup International Inc. (US:SGI) valued at $10,512,163 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 272,553 shares of Somnigroup International Inc.. This represents a change in shares of -47.82% during the quarter. The current value of the position is $9,586,376 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-18 2026-03-31 13F/A-1 SOMNIGROUP INTERNATIONAL COM 88023U101 142,210 -130,343 -47.82 10,516 -56.78 0.0018
2026-05-15 2026-03-31 13F SOMNIGROUP INTERNATIONAL COM 88023U101 142,210 -130,343 -47.82 10,516 -56.78 0.0020
2026-02-17 2025-12-31 13F SOMNIGROUP INTERNATIONAL COM 88023U101 272,553 134,188 96.98 24,330 108.49 0.0109
2025-11-14 2025-09-30 13F SOMNIGROUP INTERNATIONAL COM 88023U101 138,365 28,599 26.05 11,670 56.30 0.0053
2025-08-14 2025-06-30 13F SOMNIGROUP INTERNATIONAL COM 88023U101 109,766 28,732 35.46 7,467 57.94 0.0037
2025-05-15 2025-03-31 13F SOMNIGROUP INTERNATIONAL COM 88023U101 81,034 -2,044 -2.46 4,727 0.28 0.0026
2025-02-14 2024-12-31 13F TEMPUR SEALY INTL COM 88023U101 83,078 2,619 3.26 4,714 7.31 0.0024
2024-11-14 2024-09-30 13F TEMPUR SEALY INTL COM 88023U101 80,459 1,452 1.84 4,393 17.46 0.0022
2024-08-14 2024-06-30 13F TEMPUR SEALY INTL COM 88023U101 79,007 -865 -1.08 3,741 -17.57 0.0020
2024-05-15 2024-03-31 13F TEMPUR SEALY INTL COM 88023U101 79,872 2 0.00 4,538 11.47 0.0025
2024-02-14 2023-12-31 13F TEMPUR SEALY INTL COM 88023U101 79,870 -14,399 -15.27 4,071 -0.39 0.0024
2023-11-14 2023-09-30 13F TEMPUR SEALY INTL COM 88023U101 94,269 2,551 2.78 4,086 11.21 0.0027
2023-08-14 2023-06-30 13F TEMPUR SEALY INTL COM 88023U101 91,718 5,315 6.15 3,675 7.74 0.0023
2023-05-15 2023-03-31 13F TEMPUR SEALY INTL COM 88023U101 86,403 21,172 32.46 3,411 52.30 0.0022
2023-02-14 2022-12-31 13F TEMPUR SEALY INTL COM 88023U101 65,231 34,352 111.25 2,240 199.73 0.0016
2023-01-13 2022-09-30 13F/A-1 TEMPUR SEALY INTL COM 88023U101 30,879 -4,468 -12.64 747 -1.19 0.0006
2022-11-14 2022-09-30 13F TEMPUR SEALY INTL COM 88023U101 30,879 -4,468 747 0.0006
2022-08-15 2022-06-30 13F TEMPUR SEALY INTL COM 88023U101 35,347 -17,872 -33.58 756 -49.09 0.0005
2022-05-16 2022-03-31 13F TEMPUR SEALY INTL COM 88023U101 53,219 -5,094 -8.74 1,485 -45.86 0.0007
2022-02-14 2021-12-31 13F TEMPUR SEALY INTL COM 88023U101 58,313 -68,719 -54.10 2,743 -53.48 0.0011
2021-11-16 2021-09-30 13F TEMPUR SEALY INTL COM 88023U101 127,032 20,123 18.82 5,896 40.72 0.0026
2021-08-16 2021-06-30 13F TEMPUR SEALY INTL COM 88023U101 106,909 -5,414 -4.82 4,190 2.02 0.0018
2021-05-17 2021-03-31 13F TEMPUR SEALY INTL COM 88023U101 112,323 112,323 4,107 0.0019
2020-05-14 2020-03-31 13F TEMPUR SEALY INTL COM 88023U101 0 -28,360 -100.00 0 -100.00
2020-02-18 2019-12-31 13F TEMPUR SEALY INTL COM 88023U101 28,360 0 0.00 2,469 12.79 0.0013
2019-11-14 2019-09-30 13F TEMPUR SEALY INTL COM 88023U101 28,360 28,360 2,189 0.0012
2014-11-12 2014-09-30 13F TEMPUR SEALY INTL COM 88023U101 0 -41,416 -100.00 0 -100.00
2014-08-13 2014-06-30 13F TEMPUR SEALY INTL COM 88023U101 41,416 -25,228 -37.85 2,473 -26.77 0.0231
2014-05-08 2014-03-31 13F TEMPUR SEALY INTL COM 88023U101 66,644 -21,616 -24.49 3,377 -29.10 0.0329
2014-01-14 2013-12-31 13F TEMPUR SEALY INTL COM 88023U101 88,260 88,260 4,763 0.0481
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.