Allison Transmission Holdings

ALSN on NYSE. Allison Transmission sells automatic transmissions to truck, bus, and military vehicle makers. Market value $9.6bn.

Watch this stockFree. We tell you when something changes.

Price checks use the past 12 months to June 2026. Quality checks use five annual reports, the latest for the year to December 2025.

Should I look at this?

Worth a closer look

Read what could go wrong

This is not advice. Check the numbers below.

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Cash yield
past 12 months to June 2026
7.7%high

For every $100 of what the whole company costs, it produced $7.71 of spare cash in the past 12 months. A savings account pays about $4.

Price to profit
past 12 months to June 2026
15.4×full

You pay 15.4 years of operating profit for the business. The average large US company costs around 18.

Return on capital
five annual reports to December 2025
21.2%five-year median

Each dollar kept in the business earns 21 cents a year. Above 10 is good.

Quality score: 94 of 100. Price score: 91 of 100. Our list needs 70 on quality and 60 on price.

$115.75 a share, 52% above its 1-year low

Over the past year the price has ranged from $76.01 to $137.62.

Dividend: 1.0% a year

Paid every year for at least 5 years

Prices from Monday’s close (5 October).

Five years of cash, in billions

0.5
0.5
0.7
0.7
0.7
0.7
2021202220232024202512 monthsto Jun '26
Revenue
$2.4bn$2.8bn$3.0bn$3.2bn$3.0bn
Operating margin
27.9%28.3%30.3%30.8%29.2%
Debt to equity
3.992.892.041.461.56
Shares outstanding
0.09bn0.09bn0.09bn0.08bn0.08bn

Health checks

  • Free cash flow positive5 of 5 years
  • Accounting looks honest (Beneish)Nothing unusual
  • Financial strength (Piotroski)6 of 8 checks we could run
  • Profit backed by cash (accruals)Yes
  • Debt1.56× equity
  • Revenue growth, five yearsSlow, 7.7% a year
  • Buying back its own sharesYes, 11% fewer since 2021

The quarter to June 2026

How the business did, compared with the same quarter a year earlier.

  • Sales: $1.6 billion last quarter, up 92% on a year ago.
  • Profit: $181 million, down 7% on a year ago.
  • It keeps 20 cents of each $1 of sales as operating profit, down from 31 cents a year earlier.
  • Spare cash over the past 12 months: $737 million, up from $654 million.
  • 1% fewer shares than a year ago. Each share owns a bit more of the company.
  • Debt is $3.7 billion more than cash, up from $1.6 billion a year ago.
  • Sales grew on a year ago in 2 of the last 4 quarters.
Sales by quarter
Sales by quarter
Quarter toAmount
September 2024$824m
December 2024$796m
March 2025$766m
June 2025$814m
September 2025$693m
December 2025$737m
March 2026$1.4bn
June 2026$1.6bn
Profit by quarter
Profit by quarter
Quarter toAmount
September 2024$200m
December 2024$175m
March 2025$192m
June 2025$195m
September 2025$137m
December 2025$99m
March 2026$112m
June 2026$181m

From the company's quarterly reports to the SEC.

Dates

Next results (estimated)
n/a
Last annual report (10-K)
24 February 2026
Next quarterly (estimated, 10-Q)
4 November 2026

Who owns it

9 long-term investors we follow own it, down from 10 last quarter. 569 funds in all.

Jun '25
Dec '25
Jun '26

Sold out this quarter

Largest holders overall

From 13F filings for the quarter ended 30 June 2026.

Big holders and activists

1 investor owns more than 5%.

From Schedule 13D and 13G filings: anyone owning more than 5% must file one.

What insiders did

No insider bought shares on the open market in the last 12 months. 5 sold $6m, $1m of it under preset trading plans.

  • Graziosi David S.
    Chair, President and CEO, Director
    Sold
    Date
    21 August 2026
    Shares
    26,708
    Price
    $132.97
    Value
    $4m
  • Scroggins Eric C.
    CLO & Asst. Secretary
    Sold
    Date
    11 August 2026
    Shares
    1,050
    Price
    $125.00
    Value
    $131,250
  • Bohley G Frederick
    See Remarks
    Sold
    Date
    10 August 2026
    Shares
    3,961
    Price
    $122.38
    Value
    $484,748
  • Mell Scott A
    CFO & Treasurer
    Sold
    Date
    8 May 2026
    Shares
    2,270
    Price
    $125.00
    Value
    $283,750
  • Scroggins Eric C.
    CLO & Asst. Secretary
    Sold
    Date
    9 March 2026
    Shares
    1,313
    Price
    $114.40
    Value
    $150,207
  • Bohley G Frederick
    Allison COO,Pres.&BU Leader AT
    Sold
    under a preset trading plan
    Date
    13 February 2026
    Shares
    10,348
    Price
    $116.40
    Value
    $1m
  • Coll John
    SVP, Global MSS
    Sold
    under a preset trading plan
    Date
    31 December 2025
    Shares
    1,791
    Price
    $98.79
    Value
    $176,933

From Form 4 filings: insiders must report trades in their own company's shares within two days.

Warning signs in its filings

Problems the company itself reported to the SEC, in its own words.

None of the warning signs we check for were found.

We look for five warning signs: doubt it can keep going, weak checks on its own accounts, a notice that its past accounts can't be relied on, a change of auditor, and one customer bringing in a big share of sales. We don't check lawsuits, investigations or debt yet.

We checked the auditor's report, internal controls, restatement notices, auditor changes and big customers in the 10-K filed 24 Feb 2026, plus the 10-Q filed 5 Aug 2026 and 4 later 8-Ks.

A 10-K is the yearly report every US company files with the SEC. An 8-K is a short notice of a big event.

What could go wrong

Cheap for a reason is the question the numbers cannot answer.

Whether the price already reflects the risks is what the deep dive is for.

What changed in the risks this year

Companies must list what could hurt them each year. These are the parts that changed since last year’s report.

  • Our indebtedness could adversely affect our financial health, restrict our activities and affect our ability to meet our obligations.

    Could happen
    On January 2, 2026, we amended the Second Amended and Restated Credit Agreement dated as of March 29, 2019, as amended (the “Credit Agreement”), to provide for an incremental term loan facility under the Credit Agreement in an aggregate principal amount equal to $1,200 million (the “Incremental Term Loan”) and increased the commitments under the Revolving Credit Facility by $250 million to an aggregate principal amount of up to $1,000 million. We used the proceeds of the Incremental Term Loan and also borrowed $300 million under the Revolving Credit Facility to pay a portion of the consideration for the acquisition of the Acquired Off-Highway Business and fees, costs and expenses related to the acquisition.
    Read more
  • Fluctuations in foreign currency exchange rates could adversely affect our results.

    Could happen
    We generate revenues and incur costs in multiple currencies. As a result, changes in exchange rates may impact margins on sales outside the U.S. and on products that include components sourced from suppliers located in other countries. In addition, the translation of foreign-denominated revenues, expenses, assets and liabilities into U.S. dollars for financial reporting purposes may result in variability in our reported results. We use natural hedging strategies and may, from time to time, enter into derivative instruments to manage a portion of our foreign currency exposure. However, these measures may not fully offset the effects of exchange rate fluctuations, and our hedging activities may not be effective in mitigating all foreign currency risks, which could adversely affect our results of operations, financial condition and cash flows. Our exposure to such exchange rate fluctuations and foreign currency risks has increased with the acquisition of the Acquired Off-Highway Business.
    Read more
  • Our international operations, in particular our emerging markets, are subject to various risks which could have a material adverse effect on our business, results of operations and financial condition.

    Could happen
    Our business is subject to certain risks associated with doing business internationally, particularly in emerging markets. Outside-North America net sales represented approximately 24% of our net sales for 2025. Most of our operations were in the U.S. in 2025, but we also have manufacturing and customization facilities in India and Hungary with a services agreement with Stellantis N.V. and customization capability in Brazil, the Netherlands, China and Japan, and, effective January 1, 2026, manufacturing and assembly facilities located in approximately 14 additional countries as a result of the acquisition of the Acquired Off-Highway Business. Further, we intend to continue to pursue growth opportunities for our business in a variety of business environments outside the U.S., which could exacerbate the risks set forth below. Our international operations are subject to, without limitation, the following risks: the burden of complying with multiple and possibly conflicting laws and any unexpected changes in regulatory requirements; foreign currency exchange controls, sanctions, import and export restrictions and tariffs, including restrictions promulgated by the Office of Foreign Assets Control of the U.S. Department of the Treasury, and other trade protection regulations and measures; political risks, including increased trade protectionism and risks of loss due to civil disturbances, acts of terrorism, acts of war, guerrilla activities and insurrection; unstable economic, financial and market conditions and increased expenses as a result of inflation, higher energy costs or higher interest rates; difficulties in enforcement of third-party contractual obligations and intellectual property rights and collecting receivables through foreign legal systems; difficulties in staffing and managing international operations and the application of foreign labor regulations; differing local product preferences and product requirements; potentially adverse tax consequences from changes in tax laws, requirements relating to withholding taxes on remittances and other payments by subsidiaries and restrictions on our ability to repatriate dividends from our subsidiaries; and exposure to liabilities under anti-corruption and anti-money laundering laws, including the U.S. Foreign Corrupt Practices Act (“FCPA”) and similar laws and regulations in other jurisdictions.
    Read more
  • We are subject to cybersecurity risks to operational systems, security systems, and infrastructure owned by Allison or third-party vendors or suppliers.

    We and certain of our customers and third-party providers have experienced cyberattacks and other incidents in the past and will continue to experience varying degrees of cyberattacks and incidents in the future. While to date no cybersecurity incidents have had a material impact on our operations or financial results, we cannot guarantee that material incidents will not occur in the future. As a provider of defense products and services to the U.S. government and foreign governments, we are subject to a heightened risk of cyberattacks, including by foreign governments, violent extremist organizations, and transnational criminal organizations. In addition, because certain of our systems are integrated with third-party (e.g., dealers) systems and technology, the circumvention or failure of our cybersecurity measures could compromise the confidentiality, integrity, and availability of those third-party systems, and vice versa.
    Read more

Read it in the annual report

The deep dive

Everything above is arithmetic on public filings. The deep dive reads the last ten years of annual reports, the proxy statements, and the earnings calls, then argues the case the way Buffett, Klarman, and Hohn would, and checks every claim against the source.

  • What the business is worth, as a range, and the margin of safety at today’s price
  • Prices to start buying, buy, and buy hard
  • The three things that would make this a mistake
  • Every number footnoted to the filing it came from
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What a finished deep dive looks like

Not advice. Numbers on this page come from SEC filings and are updated each night; prices are updated again after the US market closes. The five-year figures are rounded.