앨리슨 트랜스미션 홀딩스, Inc.
US ˙ NYSE ˙ US01973R1014

SecurityALSN / Allison Transmission Holdings, Inc.
InstitutionOppenheimer & Co Inc
Latest Disclosed Ownership37,732 shares
Latest Disclosed Value $ 4,416,908
Oppenheimer & Co Inc reports 2.66% increase in ownership of ALSN / Allison Transmission Holdings, Inc.

On April 23, 2026 - Oppenheimer & Co Inc filed a 13F-HR form disclosing ownership of 37,732 shares of Allison Transmission Holdings, Inc. (US:ALSN) valued at $4,416,908 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 36,755 shares of Allison Transmission Holdings, Inc.. This represents a change in shares of 2.66% during the quarter. The current value of the position is $4,466,714 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)
2026-04-23 2026-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 37,732 977 2.66 4,417 22.73 0.0538
2026-02-02 2025-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 36,755 1,245 3.51 3,598 19.38 0.0511
2025-11-06 2025-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 35,510 27,070 320.73 3,014 276.28 0.0368
2025-07-31 2025-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 8,440 193 2.34 802 1.65 0.0106
2025-04-23 2025-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 8,247 -6,282 -43.24 789 -49.81 0.0119
2025-02-05 2024-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 14,529 612 4.40 1,570 17.43 0.0234
2024-11-05 2024-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 13,917 7,944 133.00 1,337 195.14 0.0204
2024-08-08 2024-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 5,973 461 8.36 453 1.34 0.0072
2024-05-07 2024-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 5,512 255 4.85 447 46.56 0.0074
2024-02-13 2023-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 5,257 5,257 306 0.0056
2023-05-10 2023-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 0 -13,950 -100.00 0 -100.00
2023-02-08 2022-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 13,950 1,232 9.69 580 35.20 0.0132
2022-11-14 2022-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 12,718 -300 -2.30 429 -14.37 0.0100
2022-08-08 2022-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 13,018 300 2.36 501 0.40 0.0108
2022-05-12 2022-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 12,718 1,400 12.37 499 21.41 0.0090
2022-02-02 2021-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 11,318 11,318 411 0.0072
2019-10-31 2019-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 0 -4,988 -100.00 0 -100.00
2019-08-09 2019-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 4,988 -126 -2.46 231 0.43 0.0063
2019-04-24 2019-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 5,114 5,114 230 0.0061
2015-11-13 2015-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 0 -7,342 -100.00 0 -100.00
2015-08-12 2015-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 7,342 7,342 -87.49 215 -85.37 0.0060
2014-02-12 2013-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 0 -58,675 -100.00 0 -100.00
2013-11-01 2013-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 58,675 566 0.97 1,470 9.62 0.0517
2013-08-14 2013-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 58,109 58,109 1,341 0.0518
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.