Allison Transmission Holdings, Inc.
US ˙ NYSE ˙ US01973R1014

SecurityALSN / Allison Transmission Holdings, Inc.
InstitutionD.a. Davidson & Co.
Latest Disclosed Ownership1,810 shares
Latest Disclosed Value $ 211,879
D.a. Davidson & Co. ownership in ALSN / Allison Transmission Holdings, Inc.

On May 5, 2026 - D.a. Davidson & Co. filed a 13F-HR form disclosing ownership of 1,810 shares of Allison Transmission Holdings, Inc. (US:ALSN) valued at $211,879 USD as of March 31, 2026. The entity filed a previous 13F-HR on April 28, 2025 disclosing 0 shares of Allison Transmission Holdings, Inc.. The current value of the position is $214,268 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)
2026-05-05 2026-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,810 1,810 212 0.0013
2025-04-28 2025-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 0 -100.00 0
2025-01-31 2024-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 3,577 -60 -1.65 387 10.60 0.0031
2024-11-13 2024-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 3,637 -191 -4.99 349 20.34 0.0029
2024-08-01 2024-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 3,828 488 14.61 291 7.01 0.0026
2024-05-13 2024-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 3,340 3,340 271 0.0024
2024-02-09 2023-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 0 -3,551 -100.00 0 -100.00
2023-11-08 2023-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 3,551 3,551 210 0.0023
2017-11-08 2017-09-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 0 -100 -100.00 0 -100.00
2017-08-11 2017-06-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 100 0 0.00 3 0.00 0.0001
2017-05-12 2017-03-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 100 -555 -84.73 3 -85.71 0.0001
2017-02-15 2016-12-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 655 -300 -31.41 21 -19.23 0.0005
2016-11-18 2016-09-30 13F/A-1 ALLISON TRANSMISSION HLDGS COM 01973R101 955 0 0.00 26 0.00 0.0006
2016-11-14 2016-09-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 955 26
2016-08-13 2016-06-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 955 626 190.27 26 225.00 0.0008
2016-05-13 2016-03-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 329 329 0.00 8 0.0002
2016-02-12 2015-12-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 0 0 0 0.0000
2015-05-06 2015-03-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 0 -29 -100.00 0 0.0000
2015-02-12 2014-12-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 29 -601 -95.40 0 -100.00
2014-11-12 2014-09-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 630 168 36.36 17 30.77 0.0006
2014-07-29 2014-06-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 462 0 0.00 13 0.00 0.0004
2014-05-05 2014-03-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 462 -43 -8.51 13 0.00 0.0005
2014-02-13 2013-12-31 13F/A-1 ALLISON TRANSMISSION HLDGS COM 01973R101 505 505 13 0.0005
2014-02-12 2013-12-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 505 13
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.