Allison Transmission Holdings, Inc.
US ˙ NYSE ˙ US01973R1014

SecurityALSN / Allison Transmission Holdings, Inc.
InstitutionNeuberger Berman Group LLC
Latest Disclosed Ownership209,796 shares
Latest Disclosed Value $ 24,558,694
Neuberger Berman Group LLC reports 49.12% increase in ownership of ALSN / Allison Transmission Holdings, Inc.

On May 14, 2026 - Neuberger Berman Group LLC filed a 13F-HR form disclosing ownership of 209,796 shares of Allison Transmission Holdings, Inc. (US:ALSN) valued at $24,558,720 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 140,694 shares of Allison Transmission Holdings, Inc.. This represents a change in shares of 49.12% during the quarter. The current value of the position is $24,283,887 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)
2026-05-14 2026-03-31 13F ALLISON TRANSMISSION HOLDINGS Common 01973R101 209,796 69,102 49.12 24,559 78.31 0.0096
2026-02-13 2025-12-31 13F ALLISON TRANSMISSION HOLDINGS Common 01973R101 140,694 -7,649 -5.16 13,774 9.39 0.0103
2025-11-12 2025-09-30 13F ALLISON TRANSMISSION HOLDINGS Common 01973R101 148,343 127,566 613.98 12,591 538.17 0.0092
2025-08-25 2025-06-30 13F/A-1 ALLISON TRANSMISSION HOLDINGS Common 01973R101 20,777 5,188 33.28 1,974 32.33 0.0015
2025-08-13 2025-06-30 13F ALLISON TRANSMISSION HOLDINGS Common 01973R101 20,777 5,188 1,974 0.0008
2025-05-13 2025-03-31 13F ALLISON TRANSMISSION HOLDINGS Common 01973R101 15,589 -1,857 -10.64 1,491 -20.90 0.0012
2025-02-13 2024-12-31 13F ALLISON TRANSMISSION HOLDINGS Common 01973R101 17,446 -3,684 -17.43 1,885 -7.10 0.0015
2024-11-14 2024-09-30 13F ALLISON TRANSMISSION HOLDINGS Common 01973R101 21,130 -52,024 -71.12 2,030 -63.45 0.0016
2024-11-14 2024-06-30 13F/A-1 ALLISON TRANSMISSION HOLDINGS Common 01973R101 73,154 -16,498 -18.40 5,552 -23.69 0.0046
2024-08-13 2024-06-30 13F ALLISON TRANSMISSION HOLDINGS Common 01973R101 73,154 -16,498 5,552 0.0046
2024-11-14 2024-03-31 13F/A-1 ALLISON TRANSMISSION HOLDINGS Common 01973R101 89,652 6,503 7.82 7,276 50.49 0.0060
2024-05-13 2024-03-31 13F ALLISON TRANSMISSION HOLDINGS Common 01973R101 89,652 6,503 7,276 0.0060
2024-11-14 2023-12-31 13F/A-2 ALLISON TRANSMISSION HOLDINGS Common 01973R101 83,149 -3,410 -3.94 4,835 -5.42 0.0042
2024-02-09 2023-12-31 13F ALLISON TRANSMISSION HOLDINGS Common 01973R101 83,149 -3,410 4,835 0.0042
2023-11-14 2023-09-30 13F ALLISON TRANSMISSION HOLDINGS Common 01973R101 86,559 5,525 6.82 5,112 11.74 0.0047
2023-08-11 2023-06-30 13F ALLISON TRANSMISSION HOLDINGS Common 01973R101 81,034 -8,893 -9.89 4,575 12.46 0.0041
2023-05-12 2023-03-31 13F ALLISON TRANSMISSION HOLDINGS Common 01973R101 89,927 79 0.09 4,068 8.86 0.0038
2023-02-13 2022-12-31 13F ALLISON TRANSMISSION HOLDINGS Common 01973R101 89,848 4,173 4.87 3,738 29.17 0.0037
2022-11-15 2022-09-30 13F ALLISON TRANSMISSION HOLDINGS Common 01973R101 85,675 2,494 3.00 2,893 -9.57 0.0030
2022-08-15 2022-06-30 13F ALLISON TRANSMISSION HOLDINGS Common 01973R101 83,181 8,966 12.08 3,199 9.78 0.0032
2022-05-23 2022-03-31 13F/A-1 ALLISON TRANSMISSION HOLDINGS Common 01973R101 74,215 -3,712 -4.76 2,914 2.93 0.0025
2022-05-13 2022-03-31 13F ALLISON TRANSMISSION HOLDINGS Common 01973R101 74,215 -3,712 2,912 0.0013
2022-02-11 2021-12-31 13F ALLISON TRANSMISSION HOLDINGS Common 01973R101 77,927 55,327 244.81 2,831 254.76 0.0022
2021-11-12 2021-09-30 13F ALLISON TRANSMISSION HOLDINGS Common 01973R101 22,600 -52,053 -69.73 798 -73.10 0.0007
2021-08-13 2021-06-30 13F ALLISON TRANSMISSION HOLDINGS Common 01973R101 74,653 -242,038 -76.43 2,967 -77.06 0.0026
2021-05-13 2021-03-31 13F ALLISON TRANSMISSION HOLDING Common 01973R101 316,691 -302,320 -48.84 12,931 -51.57 0.0124
2021-02-10 2020-12-31 13F ALLISON TRANSMISSION HOLDING Common 01973R101 619,011 -76,346 -10.98 26,698 9.26 0.0277
2020-11-12 2020-09-30 13F ALLISON TRANSMISSION HOLDING Common 01973R101 695,357 -180,040 -20.57 24,435 -24.11 0.0290
2020-08-13 2020-06-30 13F ALLISON TRANSMISSION HOLDING Common 01973R101 875,397 65,270 8.06 32,197 21.88 0.0400
2020-05-14 2020-03-31 13F ALLISON TRANSMISSION HOLDING Common 01973R101 810,127 -174,863 -17.75 26,418 -44.49 0.0403
2020-02-12 2019-12-31 13F ALLISON TRANSMISSION HOLDING Common 01973R101 984,990 128,866 15.05 47,595 18.16 0.0555
2019-11-13 2019-09-30 13F ALLISON TRANSMISSION HOLDING Common 01973R101 856,124 19,310 2.31 40,280 3.85 0.0492
2019-08-13 2019-06-30 13F ALLISON TRANSMISSION HOLDING Common 01973R101 836,814 719,174 611.33 38,786 634.03 0.0464
2019-05-13 2019-03-31 13F ALLISON TRANSMISSION HOLDING Common 01973R101 117,640 61,469 109.43 5,284 114.27 0.0065
2019-02-12 2018-12-31 13F ALLISON TRANSMISSION HOLDING Common 01973R101 56,171 -11,044 -16.43 2,466 -29.46 0.0034
2018-11-16 2018-09-30 13F/A-1 ALLISON TRANSMISSION HOLDING Common 01973R101 67,215 -3,306 -4.69 3,496 22.45 0.0040
2018-11-13 2018-09-30 13F ALLISON TRANSMISSION HOLDING Common 01973R101 67,215 -3,306 3,496
2018-08-13 2018-06-30 13F ALLISON TRANSMISSION HOLDING Common 01973R101 70,521 -1,088,462 -93.92 2,855 -93.69 0.0032
2018-05-08 2018-03-31 13F ALLISON TRANSMISSION HOLDING Common 01973R101 1,158,983 -516,534 -30.83 45,270 -37.27 0.0517
2018-02-14 2017-12-31 13F ALLISON TRANSMISSION HOLDING Common 01973R101 1,675,517 -1,057,081 -38.68 72,165 -29.63 0.0829
2017-11-15 2017-09-30 13F ALLISON TRANSMISSION HOLDINGS COMMON STOCK 01973R101 2,732,598 10,476 0.38 102,554 0.44 0.1283
2017-08-08 2017-06-30 13F ALLISON TRANSMISSION HOLDINGS COMMON STOCK 01973R101 2,722,122 35,523 1.32 102,107 5.40 0.1311
2017-05-10 2017-03-31 13F ALLISON TRANSMISSION HOLDINGS COMMON STOCK 01973R101 2,686,599 52,811 2.01 96,879 9.18 0.1250
2017-02-06 2016-12-31 13F ALLISON TRANSMISSION HOLDINGS COMMON STOCK 01973R101 2,633,788 232,740 9.69 88,732 28.85 0.1192
2016-11-02 2016-09-30 13F ALLISON TRANSMISSION HOLDINGS COMMON STOCK 01973R101 2,401,048 208,463 9.51 68,862 11.25 0.0934
2016-08-05 2016-06-30 13F ALLISON TRANSMISSION HOLDINGS COMMON STOCK 01973R101 2,192,585 1,497,121 215.27 61,897 229.87 0.0853
2016-05-06 2016-03-31 13F ALLISON TRANSMISSION HOLDINGS COMMON STOCK 01973R101 695,464 695,464 0.00 18,764 0.0258
2016-01-28 2015-12-31 13F ALLISON TRANSMISSION HOLDINGS COMMON STOCK 01973R101 0 0 0 0.0000
2015-11-10 2015-09-30 13F ALLISON TRANSMISSION HOLDINGS COMMON STOCK 01973R101 0 -115,792 -100.00 0 -100.00
2015-07-31 2015-06-30 13F ALLISON TRANSMISSION HOLDINGS COMMON STOCK 01973R101 115,792 -96,049 -45.34 3,388 -49.93 0.0038
2015-05-06 2015-03-31 13F ALLISON TRANSMISSION HOLDINGS COMMON STOCK 01973R101 211,841 211,841 6,766 0.0072
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.