Allison Transmission Holdings, Inc.
US ˙ NYSE ˙ US01973R1014

SecurityALSN / Allison Transmission Holdings, Inc.
InstitutionNatixis Advisors, L.p.
Latest Disclosed Ownership324,347 shares
Latest Disclosed Value $ 37,968
Natixis Advisors, L.p. reports 13.80% increase in ownership of ALSN / Allison Transmission Holdings, Inc.

On May 13, 2026 - Natixis Advisors, L.p. filed a 13F-HR form disclosing ownership of 324,347 shares of Allison Transmission Holdings, Inc. (US:ALSN) valued at $37,968,060 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 285,022 shares of Allison Transmission Holdings, Inc.. This represents a change in shares of 13.80% during the quarter. The current value of the position is $37,543,165 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)
2026-05-13 2026-03-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 324,347 39,325 13.80 38 37.04 0.0528
2026-02-10 2025-12-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 285,022 14,445 5.34 28 22.73 0.0395
2025-11-13 2025-09-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 270,577 41,511 18.12 23 4.76 0.0335
2025-08-13 2025-06-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 229,066 22,957 11.14 22 10.53 0.0345
2025-05-08 2025-03-31 13F ALLISON TRANSMISSION HLDG COM 01973R101 206,109 22,685 12.37 20 0.00 0.0364
2025-02-10 2024-12-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 183,424 29,373 19.07 20 35.71 0.0370
2024-11-06 2024-09-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 154,051 26,327 20.61 15 55.56 0.0289
2024-08-01 2024-06-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 127,724 52,281 69.30 10 50.00 0.0211
2024-04-25 2024-03-31 13F ALLISON TRANSMISSION HLDGS INC COM COM 01973R101 75,443 75,443 6 0.0141
2021-11-12 2021-09-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 0 -17,633 -100.00 0 -100.00
2021-08-12 2021-06-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 17,633 1,285 7.86 701 5.10 0.0033
2021-05-05 2021-03-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 16,348 -249 -1.50 667 -6.84 0.0035
2021-02-12 2020-12-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 16,597 -15,659 -48.55 716 -36.80 0.0041
2020-11-12 2020-09-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 32,256 10,718 49.76 1,133 43.06 0.0071
2020-08-11 2020-06-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 21,538 -157,740 -87.99 792 -86.45 0.0053
2020-04-27 2020-03-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 179,278 46,805 35.33 5,846 -8.67 0.0476
2020-02-10 2019-12-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 132,473 7,567 6.06 6,401 8.92 0.0451
2019-11-12 2019-09-30 13F ALLISON TRANSMISSION HLDGS CL A 01973R101 124,906 11,108 9.76 5,877 11.41 0.0466
2019-08-12 2019-06-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 113,798 6,000 5.57 5,275 8.94 0.0431
2019-05-15 2019-03-31 13F/A-1 ALLISON TRANSMISSION HLDGS COM 01973R101 107,798 1,083 1.01 4,842 3.35 0.0424
2019-05-15 2019-03-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 107,798 1,083 4,842
2019-02-13 2018-12-31 13F/A-1 ALLISON TRANSMISSION HLDGS COM 01973R101 106,715 -1,909 -1.76 4,685 -17.06 0.0463
2019-02-13 2018-12-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 106,715 -1,909 4,685
2018-11-13 2018-09-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 108,624 -28,484 -20.77 5,649 1.77 0.0497
2018-08-14 2018-06-30 13F/A-1 ALLISON TRANSMISSION HLDGS COM 01973R101 137,108 8,855 6.90 5,551 10.80 0.0530
2018-08-14 2018-06-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 137,108 5,551
2018-05-10 2018-03-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 128,253 3,802 3.06 5,010 -6.53 0.0494
2018-02-14 2017-12-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 124,451 -6,000 -4.60 5,360 9.50 0.0546
2017-11-14 2017-09-30 13F ALLISON TRANSMISSION HLDGS I COM 01973R101 130,451 -23,836 -15.45 4,895 -15.41 0.0517
2017-07-27 2017-06-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 154,287 -12,688 -7.60 5,787 -3.89 0.0626
2017-05-12 2017-03-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 166,975 85,507 104.96 6,021 119.34 0.0667
2017-02-07 2016-12-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 81,468 5,359 7.04 2,745 25.74 0.0330
2016-11-04 2016-09-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 76,109 5,264 7.43 2,183 9.15 0.0283
2016-08-01 2016-06-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 70,845 7,638 12.08 2,000 17.30 0.0276
2016-05-06 2016-03-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 63,207 7,384 13.23 1,705 17.99 0.0255
2016-02-12 2015-12-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 55,823 -2,929 -4.99 1,445 -7.84 0.0237
2015-11-12 2015-09-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 58,752 -5,436 -8.47 1,568 -16.51 0.0272
2015-08-14 2015-06-30 13F ALLISON TRANSMISSION HLDGS COM 01973R101 64,188 7,289 12.81 1,878 3.36 0.0319
2015-05-15 2015-03-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 56,899 8,789 18.27 1,817 11.40 0.0319
2015-02-05 2014-12-31 13F ALLISON TRANSMISSION HLDGS COM 01973R101 48,110 48,110 1,631 0.0305
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.