Allison Transmission Holdings, Inc.
US ˙ NYSE ˙ US01973R1014

SecurityALSN / Allison Transmission Holdings, Inc.
InstitutionAmalgamated Bank
Latest Disclosed Ownership4,471 shares
Latest Disclosed Value $ 523
Amalgamated Bank reports 13.27% decrease in ownership of ALSN / Allison Transmission Holdings, Inc.

On May 8, 2026 - Amalgamated Bank filed a 13F-HR form disclosing ownership of 4,471 shares of Allison Transmission Holdings, Inc. (US:ALSN) valued at $523,375 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 5,155 shares of Allison Transmission Holdings, Inc.. The current value of the position is $517,518 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)
2026-05-08 2026-03-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 4,471 -684 -13.27 1 0.0040
2026-02-05 2025-12-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 5,155 -267 -4.92 1 0.0036
2025-10-29 2025-09-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 5,422 -186 -3.32 0 0.0033
2025-08-04 2025-06-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 5,608 -560 -9.08 1 0.0041
2025-04-25 2025-03-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 6,168 -213 -3.34 1 0.0050
2025-02-04 2024-12-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 6,381 103 1.64 1 0.0057
2024-10-30 2024-09-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 6,278 -9,129 -59.25 1 -100.00 0.0050
2024-08-12 2024-06-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 15,407 -2,064 -11.81 1 0.00 0.0100
2024-04-23 2024-03-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 17,471 -6,188 -26.15 1 0.00 0.0121
2024-02-06 2023-12-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 23,659 2,104 9.76 1 0.00 0.0110
2023-11-08 2023-09-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 21,555 7,209 50.25 1 0.0108
2023-08-11 2023-06-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 14,346 -4,147 -22.42 1 0.0066
2023-05-02 2023-03-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 18,493 -16,763 -47.55 1 -100.00 0.0071
2023-02-10 2022-12-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 35,256 14,240 67.76 1 -99.86 0.0131
2022-11-09 2022-09-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 21,016 -5,928 -22.00 710 -31.47 0.0069
2022-08-15 2022-06-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 26,944 4,315 19.07 1,036 16.67 0.0097
2022-08-25 2022-03-31 13F/A-1 ALLISON TRANSMISSION HOLDING COM 01973R101 22,629 1,356 6.37 888 14.88 0.0069
2022-06-30 2022-03-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 22,629 1,356 888 0.0071
2022-02-15 2021-12-31 13F/A-1 ALLISON TRANSMISSION HOLDING COM 01973R101 21,273 606 2.93 773 5.89 0.0057
2022-02-15 2021-12-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 21,273 606 773 0.0057
2021-10-29 2021-09-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 20,667 -1,829 -8.13 730 -18.34 0.0062
2021-08-16 2021-06-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 22,496 4,221 23.10 894 19.84 0.0072
2021-05-13 2021-03-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 18,275 -1,420 -7.21 746 -12.13 0.0280
2021-02-12 2020-12-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 19,695 -18 -0.09 849 22.51 0.0322
2020-10-30 2020-09-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 19,713 -366 -1.82 693 -6.22 0.0301
2020-08-10 2020-06-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 20,079 -8,660 -30.13 739 -21.13 0.0342
2020-05-13 2020-03-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 28,739 -732 -2.48 937 -34.20 0.0229
2020-02-13 2019-12-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 29,471 896 3.14 1,424 5.95 0.0262
2019-11-13 2019-09-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 28,575 3,192 12.58 1,344 14.19 0.0283
2019-08-14 2019-06-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 25,383 -729 -2.79 1,177 0.34 0.0275
2019-05-15 2019-03-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 26,112 277 1.07 1,173 3.44 0.0284
2019-02-15 2018-12-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 25,835 9,895 62.08 1,134 36.79 0.0321
2018-11-14 2018-09-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 15,940 -12,297 -43.55 829 -27.47 0.0205
2018-07-18 2018-06-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 28,237 1,629 6.12 1,143 10.01 0.0279
2018-05-22 2018-03-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 26,608 1,689 6.78 1,039 -3.17 0.0276
2018-02-13 2017-12-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 24,919 -351 -1.39 1,073 13.19 0.0290
2017-11-09 2017-09-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 25,270 -716 -2.76 948 -2.77 0.0295
2017-08-10 2017-06-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 25,986 5,659 27.84 975 33.02 0.0320
2017-05-12 2017-03-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 20,327 657 3.34 733 10.56 0.0365
2017-02-14 2016-12-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 19,670 2,513 14.65 663 34.76 0.0300
2016-11-15 2016-09-30 13F/A-1 ALLISON TRANSMISSION HOLDING COM 01973R101 17,157 51 0.30 492 1.86 0.0285
2016-08-16 2016-06-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 17,106 -3,989 -18.91 483 -15.11 0.0279
2016-05-11 2016-03-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 21,095 1,749 9.04 569 13.57 0.0554
2016-02-10 2015-12-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 19,346 -1,362 -6.58 501 -9.40 0.0618
2015-11-04 2015-09-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 20,708 264 1.29 553 -7.53 0.0580
2015-07-10 2015-06-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 20,444 5,168 33.83 598 22.54 0.0587
2015-04-22 2015-03-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 15,276 15,276 0.00 488 0.0596
2015-01-29 2014-12-31 13F ALLISON TRANSMISSION HOLDING COM 01973R101 0 -14,731 -100.00 0 -100.00
2014-11-14 2014-09-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 14,731 187 1.29 420 -7.08 0.0625
2014-08-11 2014-06-30 13F ALLISON TRANSMISSION HOLDING COM 01973R101 14,544 14,544 452 0.0682
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.