Allison Transmission Holdings, Inc.
US ˙ NYSE ˙ US01973R1014

SecurityALSN / Allison Transmission Holdings, Inc.
InstitutionState Street Corp
Latest Disclosed Ownership1,523,239 shares
Latest Disclosed Value $ 178,310,357
State Street Corp reports 2.00% increase in ownership of ALSN / Allison Transmission Holdings, Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 1,523,239 shares of Allison Transmission Holdings, Inc. (US:ALSN) valued at $178,310,357 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,493,320 shares of Allison Transmission Holdings, Inc.. This represents a change in shares of 2.00% during the quarter. The current value of the position is $180,321,033 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)
2026-05-15 2026-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,523,239 29,919 2.00 178,310 21.97 0.0062
2026-02-13 2025-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,493,320 -83,868 -5.32 146,196 9.21 0.0049
2025-11-14 2025-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,577,188 -75,102 -4.55 133,872 -14.71 0.0046
2025-08-14 2025-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,652,290 17,783 1.09 156,951 0.37 0.0059
2025-05-15 2025-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,634,507 -41,989 -2.50 156,373 -13.68 0.0064
2025-02-14 2024-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,676,496 -5,580 -0.33 181,162 12.11 0.0071
2024-11-14 2024-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,682,076 13,252 0.79 161,597 27.58 0.0066
2024-08-14 2024-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,668,824 14,799 0.89 126,664 -5.64 0.0055
2024-05-15 2024-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,654,025 -21,534 -1.29 134,241 37.78 0.0060
2024-02-14 2023-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,675,559 102,006 6.48 97,434 4.84 0.0047
2023-11-14 2023-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,573,553 25,842 1.67 92,934 6.35 0.0052
2023-08-14 2023-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,547,711 -126,929 -7.58 87,384 15.34 0.0046
2023-05-15 2023-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,674,640 -1,274 -0.08 75,761 8.67 0.0043
2023-05-15 2022-12-31 13F/A-99 ALLISON TRANSMISSION HLDGS I COM 01973R101 1,675,914 -30,743 -1.80 69,718 21.00 0.0041
2023-05-15 2022-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,675,914 -30,743 69,718 0.0041
2022-11-15 2022-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,706,657 45,149 2.72 57,617 -9.81 0.0036
2022-08-15 2022-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,661,508 -152,625 -8.41 63,885 -10.30 0.0038
2022-05-16 2022-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,814,133 75,913 4.37 71,223 12.72 0.0035
2022-02-14 2021-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,738,220 4,403 0.25 63,184 3.18 0.0030
2021-11-15 2021-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,733,817 -47,429 -2.66 61,238 -13.49 0.0032
2021-08-16 2021-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,781,246 140,553 8.57 70,787 5.67 0.0037
2021-07-09 2021-03-31 13F/A-1 ALLISON TRANSMISSION HLDGS I COM 01973R101 1,640,693 69,618 4.43 66,989 -1.14 0.0038
2021-05-17 2021-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,640,693 69,618 66,989 0.0038
2021-02-16 2020-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,571,075 134,444 9.36 67,760 34.22 0.0041
2020-11-10 2020-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,436,631 -103,482 -6.72 50,483 -10.88 0.0034
2020-08-14 2020-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,540,113 -31,311 -1.99 56,645 10.54 0.0041
2020-06-19 2020-03-31 13F/A-1 ALLISON TRANSMISSION HLDGS I COM 01973R101 1,571,424 -195 -0.01 51,244 -32.52 0.0045
2020-05-11 2020-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,571,424 -195 51,244 4,500.2550
2020-02-06 2019-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,571,619 -27,241 -1.70 75,941 0.95 0.0052
2019-11-14 2019-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,598,860 46,288 2.98 75,226 4.54 0.0056
2019-08-14 2019-06-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,552,572 -57,314 -3.56 71,962 -0.49 0.0054
2019-05-15 2019-03-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,609,886 46,435 2.97 72,316 5.34 0.0056
2019-02-12 2018-12-31 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 1,563,451 -28,840 -1.81 68,651 -17.10 0.0063
2018-11-09 2018-09-30 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 1,592,291 -55,129 -3.35 82,815 24.16 0.0064
2018-08-14 2018-06-30 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 1,647,420 10,313 0.63 66,702 4.31 0.0056
2018-05-15 2018-03-31 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 1,637,107 -76,263 -4.45 63,948 -13.35 0.0054
2018-02-14 2017-12-31 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 1,713,370 -55,481 -3.14 73,797 11.16 0.0059
2017-11-14 2017-09-30 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 1,768,851 -50,492 -2.78 66,386 -2.73 0.0057
2017-08-14 2017-06-30 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 1,819,343 -130,117 -6.67 68,252 -2.91 0.0060
2017-05-15 2017-03-31 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 1,949,460 -48,852 -2.44 70,300 4.43 0.0063
2017-02-09 2016-12-31 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 1,998,312 -29,430 -1.45 67,320 15.76 0.0063
2017-01-13 2016-09-30 13F/A-1 ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 2,027,742 111,131 5.80 58,155 7.49 0.0059
2016-11-14 2016-09-30 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 2,027,742 58,155
2016-08-12 2016-06-30 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 1,916,611 -302,800 -13.64 54,103 -9.65 0.0058
2016-05-20 2016-03-31 13F/A-1 ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 2,219,411 102,744 4.85 59,881 9.28 0.0065
2016-05-12 2016-03-31 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 2,219,411 59,881
2016-02-16 2015-12-31 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 2,116,667 112,176 5.60 54,796 2.42 0.0060
2015-11-16 2015-09-30 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 2,004,491 114,859 6.08 53,500 -3.24 0.0062
2015-08-13 2015-06-30 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 1,889,632 257,807 15.80 55,292 6.09 0.0059
2015-05-15 2015-03-31 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 1,631,825 50,672 3.20 52,116 -2.77 0.0053
2015-02-11 2014-12-31 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 1,581,153 -19,757 -1.23 53,601 17.52 0.0053
2014-11-12 2014-09-30 13F/A-1 ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 1,600,910 213,476 15.39 45,611 5.70 0.0049
2014-11-10 2014-09-30 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 1,600,910 45,611
2014-08-12 2014-06-30 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 1,387,434 910,659 191.00 43,152 202.27 0.0047
2014-05-15 2014-03-31 13F/A-1 ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 476,775 68,729 16.84 14,276 26.72 0.0016
2014-05-13 2014-03-31 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 476,775 14,276
2014-02-06 2013-12-31 13F/A-1 ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 408,046 50,264 14.05 11,266 25.65 0.0013
2014-02-06 2013-12-31 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 313,807 6,406
2013-11-12 2013-09-30 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 357,782 59,778 20.06 8,966 30.28 0.0011
2013-08-08 2013-06-30 13F ALLISON TRANSMISSION HLDGS Common equity shares 01973R101 298,004 298,004 6,882 0.0009
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.