Blue Bird Corporation
DE ˙ DB ˙ US0953061068
61,46 € ↑3,44 (5,93%)
2026-06-03
DEL PRIS
SecurityDE:4RB / Blue Bird Corporation
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership1,102,335 shares
Latest Disclosed Value $ 62,669,415
Janus Henderson Group Plc reports 41.76% increase in ownership of 4RB / Blue Bird Corporation

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 1,102,335 shares of Blue Bird Corporation (DE:4RB) valued at $51,368,811 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 777,625 shares of Blue Bird Corporation. This represents a change in shares of 41.76% during the quarter. The current value of the position is $67,749,509 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 BLUE BIRD COM 095306106 1,102,335 324,710 41.76 62,669 71.54 0.0106
2026-05-15 2026-03-31 13F BLUE BIRD COM 095306106 1,102,335 324,710 41.76 62,669 71.54 0.0116
2026-02-17 2025-12-31 13F BLUE BIRD COM 095306106 777,625 84,488 12.19 36,534 -8.42 0.0164
2025-11-14 2025-09-30 13F BLUE BIRD COM 095306106 693,137 293,272 73.34 39,890 131.30 0.0182
2025-08-14 2025-06-30 13F BLUE BIRD COM 095306106 399,865 54,687 15.84 17,247 51.77 0.0085
2025-05-15 2025-03-31 13F BLUE BIRD COM 095306106 345,178 59,595 20.87 11,363 3.02 0.0062
2025-02-14 2024-12-31 13F BLUE BIRD COM 095306106 285,583 227,928 395.33 11,031 299.06 0.0056
2024-11-14 2024-09-30 13F BLUE BIRD COM 095306106 57,655 45,055 357.58 2,764 307.67 0.0014
2024-08-14 2024-06-30 13F BLUE BIRD COM 095306106 12,600 -134 -1.05 678 38.93 0.0004
2024-05-15 2024-03-31 13F BLUE BIRD COM 095306106 12,734 14 0.11 488 42.69 0.0003
2024-02-14 2023-12-31 13F BLUE BIRD COM 095306106 12,720 -10 -0.08 343 26.20 0.0002
2023-11-14 2023-09-30 13F BLUE BIRD COM 095306106 12,730 10 0.08 272 -4.91 0.0002
2023-08-14 2023-06-30 13F BLUE BIRD COM 095306106 12,720 12 0.09 285 10.04 0.0002
2023-05-15 2023-03-31 13F BLUE BIRD COM 095306106 12,708 12,708 259 0.0002
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.