Allison Transmission Holdings, Inc.
US ˙ NYSE ˙ US01973R1014

SecurityALSN / Allison Transmission Holdings, Inc.
InstitutionMackenzie Financial Corp
Latest Disclosed Ownership19,083 shares
Latest Disclosed Value $ 2,233,856
Mackenzie Financial Corp reports 8.87% decrease in ownership of ALSN / Allison Transmission Holdings, Inc.

On May 13, 2026 - Mackenzie Financial Corp filed a 13F-HR form disclosing ownership of 19,083 shares of Allison Transmission Holdings, Inc. (US:ALSN) valued at $2,233,856 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 18, 2026 disclosing 20,940 shares of Allison Transmission Holdings, Inc.. This represents a change in shares of -8.87% during the quarter. The current value of the position is $2,259,046 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)
2026-05-13 2026-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 19,083 -1,857 -8.87 2,234 8.03 0.0027
2026-02-18 2025-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 20,940 -248,548 -92.23 2,067 -90.96 0.0024
2025-11-13 2025-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 269,488 84,143 45.40 22,874 29.93 0.0277
2025-08-13 2025-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 185,345 179,243 2,937.45 17,606 2,919.73 0.0228
2025-05-07 2025-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 6,102 -1,385 -18.50 584 -27.94 0.0008
2025-05-02 2024-12-31 13F/A-2 ALLISON TRANSMISSION HLDGS I COM 01973R101 7,487 -398 -5.05 809 6.87 0.0011
2025-02-20 2024-12-31 13F/A-1 ALLISON TRANSMISSION HLDGS I COM 01973R101 7,487 -398 809 0.0011
2025-02-14 2024-12-31 13F Allison Transmission Holdings Common Stock 01973R101 7,487 -398 739 0.0011
2024-11-13 2024-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 7,885 -173,557 -95.65 758 -94.50 0.0011
2024-08-14 2024-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 181,442 -390 -0.21 13,771 -6.68 0.0205
2024-05-10 2024-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 181,832 -5,281 -2.82 14,757 35.63 0.0213
2024-01-30 2023-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 187,113 59,967 47.16 10,881 47.61 0.0164
2023-10-25 2023-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 127,146 38,273 43.06 7,372 45.13 0.0124
2023-08-03 2023-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 88,873 84,224 1,811.66 5,079 2,318.57 0.0077
2023-04-24 2023-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 4,649 4,649 210 0.0003
2022-02-14 2021-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 0 -13,492 -100.00 0 -100.00
2021-11-08 2021-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 13,492 1,400 11.58 477 -0.83 0.0007
2021-08-11 2021-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 12,092 -73,000 -85.79 481 -86.15 0.0007
2021-05-14 2021-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 85,092 29,400 52.79 3,474 44.63 0.0053
2021-02-10 2020-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 55,692 792 1.44 2,402 24.52 0.0052
2020-11-13 2020-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 54,900 -9,358 -14.56 1,929 -18.37 0.0048
2020-08-13 2020-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 64,258 20,932 48.31 2,363 67.23 0.0063
2020-05-14 2020-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 43,326 -299,025 -87.34 1,413 -91.46 0.0045
2020-02-13 2019-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 342,351 -61,280 -15.18 16,542 -12.90 0.0407
2019-11-14 2019-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 403,631 297,121 278.96 18,991 284.67 0.0499
2019-08-23 2019-06-30 13F/A-1 ALLISON TRANSMISSION HLDGS I COM 01973R101 106,510 -32,365 -23.31 4,937 -20.86 0.0127
2019-08-14 2019-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 106,510 -32,365 4,937
2019-05-15 2019-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 138,875 25,376 22.36 6,238 25.16 0.0151
2019-02-06 2018-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 113,499 -19,113 -14.41 4,984 -27.74 0.0131
2018-11-15 2018-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 132,612 115,342 667.87 6,897 886.70 0.0168
2018-08-13 2018-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 17,270 4,259 32.73 699 37.60 0.0018
2018-05-14 2018-03-31 13F/A-1 ALLISON TRANSMISSION HLDGS I COM 01973R101 13,011 233 1.82 508 -7.64 0.0013
2018-05-14 2018-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 13,011 508
2018-02-13 2017-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 12,778 12,778 550 0.0013
2016-11-15 2016-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 0 -16,992 -100.00 0 -100.00
2016-08-12 2016-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 16,992 611 3.73 480 8.60 0.0027
2016-05-12 2016-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 16,381 395 2.47 442 6.76 0.0040
2016-02-12 2015-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 15,986 1,498 10.34 414 6.98 0.0026
2015-11-13 2015-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 14,488 14,488 387 0.0023
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.