Janus Detroit Street Trust - Janus Henderson Mortgage-Backed Securities ETF
US ˙ ARCA ˙ US47103U8523

SecurityJMBS / Janus Detroit Street Trust - Janus Henderson Mortgage-Backed Securities ETF
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership138,124 shares
Latest Disclosed Value $ 6,240,442
Janus Henderson Group Plc reports 11.08% decrease in ownership of JMBS / Janus Detroit Street Trust - Janus Henderson Mortgage-Backed Securities ETF

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 138,124 shares of Janus Detroit Street Trust - Janus Henderson Mortgage-Backed Securities ETF (US:JMBS) valued at $6,240,442 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 155,327 shares of Janus Detroit Street Trust - Janus Henderson Mortgage-Backed Securities ETF. This represents a change in shares of -11.08% during the quarter. The current value of the position is $6,218,342 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 JANUS DETROIT STR TR HENDERSON MTG 47103U852 138,124 -17,203 -11.08 6,240 -12.06 0.0011
2026-05-15 2026-03-31 13F JANUS DETROIT STR TR HENDERSON MTG 47103U852 138,124 -17,203 6,240 0.0012
2026-02-17 2025-12-31 13F JANUS DETROIT STR TR HENDERSON MTG 47103U852 155,327 142,537 1,114.44 7,097 1,115.07 0.0032
2025-11-14 2025-09-30 13F JANUS DETROIT STR TR HENDERSON MTG 47103U852 12,790 12,790 584 0.0003
2024-08-14 2024-06-30 13F JANUS DETROIT STR TR HENDERSON MTG 47103U852 0 -5,688 -100.00 0 -100.00
2024-05-15 2024-03-31 13F JANUS DETROIT STR TR HENDERSON MTG 47103U852 5,688 187 3.40 257 1.59 0.0001
2024-02-14 2023-12-31 13F JANUS DETROIT STR TR HENDERSON MTG 47103U852 5,501 90 1.66 253 7.69 0.0002
2023-11-14 2023-09-30 13F JANUS DETROIT STR TR HENDERSON MTG 47103U852 5,411 145 2.75 235 -2.50 0.0002
2023-08-14 2023-06-30 13F JANUS DETROIT STR TR HENDERSON MTG 47103U852 5,266 200 3.95 241 1.69 0.0001
2023-05-15 2023-03-31 13F JANUS DETROIT STR TR HENDERSON MTG 47103U852 5,066 5,066 237 0.0002
2019-07-31 2019-06-30 13F JANUS DETROIT STR TR HENDERSON MTG 47103U852 0 -100,000 -100.00 0 -100.00
2019-04-30 2019-03-31 13F JANUS DETROIT STR TR HENDERSON MTG 47103U852 100,000 100,000 5,141 0.0028
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.