Allison Transmission Holdings, Inc. (ALSN) Ownership
ALSN ownership summary
as of October 18, 2026- Institutions
- 106.6% of shares outstanding
- Insiders
- 0.73% of shares outstanding
- Shares outstanding
- 82.6M
- Float
- 81.8M shares available to trade
- Short interest
- 3.91% 2.3M shares short
- Days to cover
- 2.91 short interest down 16.0% vs prior month
- Institutions 106.64%
- Insiders 0.73%
ALSN top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | FMR Inc | 15.04% | 12.4M | $1.39B | −33,393 (−0.3%) | June 30, 2026 |
| 2 | Vanguard Portfolio Management, LLC | 4.83% | 4.0M | $445.6M | −203,367 (−4.9%) | June 30, 2026 |
| 3 | BlackRock Inc | 4.81% | 4.0M | $444.5M | +187,009 (+4.9%) | June 30, 2026 |
| 4 | Vanguard Capital Management, LLC | 4.53% | 3.7M | $418.4M | +28,642 (+0.8%) | June 30, 2026 |
| 5 | Boston Partners Global Investors, Inc | 3.85% | 3.2M | $355.1M | +319,918 (+11.2%) | June 30, 2026 |
| 6 | Fuller & Thaler Asset Management Inc | 3.18% | 2.6M | $293.2M | −772,531 (−22.8%) | June 30, 2026 |
| 7 | LSV Asset Management | 2.66% | 2.2M | $245.6M | +66,367 (+3.1%) | June 30, 2026 |
| 8 | Geode Capital Management, LLC | 2.46% | 2.0M | $226.7M | −176,287 (−8.0%) | June 30, 2026 |
| 9 | Renaissance Technologies Corp | 2.35% | 1.9M | $216.8M | −321,400 (−14.2%) | June 30, 2026 |
| 10 | Dimensional Fund Advisors, Inc. | 2.32% | 1.9M | $214.4M | +15,663 (+0.8%) | June 30, 2026 |
| 11 | London Company of Virginia | 2.21% | 1.8M | $204.0M | −80,692 (−4.2%) | June 30, 2026 |
| 12 | First Trust Advisors L.P. | 2.19% | 1.8M | $202.0M | −219,972 (−10.9%) | June 30, 2026 |
| 13 | State Street Corp | 1.86% | 1.5M | $172.0M | +14,927 (+1.0%) | June 30, 2026 |
| 14 | Wasatch Advisors LP | 1.83% | 1.5M | $168.9M | +776,169 (+105.7%) | June 30, 2026 |
| 15 | Stockbridge Partners LLC | 1.82% | 1.5M | $167.7M | +469,586 (+45.6%) | June 30, 2026 |
| 16 | Bank of Montreal | 1.65% | 1.4M | $152.6M | −187,398 (−12.1%) | June 30, 2026 |
| 17 | BMO Capital Markets Corp. | 1.65% | 1.4M | $152.6M | −187,398 (−12.1%) | June 30, 2026 |
| 18 | NORGES BANK | 1.52% | 1.3M | $140.3M | +73,817 (+6.2%) | June 30, 2026 |
| 19 | Federated Hermes Inc | 1.50% | 1.2M | $138.2M | −5,089 (−0.4%) | June 30, 2026 |
| 20 | AQR Capital Management LLC | 1.37% | 1.1M | $126.4M | −105,017 (−8.5%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 9 holders added 2.0M shares and 11 cut 2.3M.
ALSN top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Core S&P Mid-Cap ETF | 3.56% | 2.9M | $328.9M | −1,056 (−0.0%) | September 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 3.19% | 2.6M | $294.2M | −8,801 (−0.3%) | August 31, 2026 |
| 3 | Fidelity Dividend Growth | 2.53% | 2.1M | $233.7M | +51,700 (+2.5%) | August 31, 2026 |
| 4 | Vanguard Small Cap Index | 2.31% | 1.9M | $213.4M | +2,424 (+0.1%) | August 31, 2026 |
| 5 | FullerThaler Behavioral Sm-Cp Eq R6 | 2.24% | 1.8M | $206.5M | −997,700 (−35.1%) | June 30, 2026 |
| 6 | JHancock Disciplined Value Mid Cap I | 1.83% | 1.5M | $169.4M | −29,297 (−1.9%) | August 31, 2026 |
| 7 | Fidelity Capital Appreciation | 1.64% | 1.4M | $151.1M | +34,100 (+2.6%) | August 31, 2026 |
| 8 | Strategic Advisers Fidelity US TtlStk | 1.58% | 1.3M | $146.1M | −87,314 (−6.3%) | August 31, 2026 |
| 9 | Vanguard MStar Small Cap Value Index | 1.47% | 1.2M | $135.5M | +912 (+0.1%) | August 31, 2026 |
| 10 | Touchstone Mid Cap Y | 1.46% | 1.2M | $134.4M | −444,638 (−27.0%) | September 30, 2026 |
| 11 | Fidelity Series Value Discovery | 1.31% | 1.1M | $120.6M | — | August 31, 2026 |
| 12 | First Trust Rising Dividend Achiev ETF | 1.11% | 915K | $102.3M | +1,584 (+0.2%) | September 30, 2026 |
| 13 | American Funds SMALLCAP World A | 1.00% | 823K | $92.0M | +823,217 (0.0%) | June 30, 2026 |
| 14 | Fidelity Equity Dividend Income | 0.82% | 676K | $75.6M | — | August 31, 2026 |
| 15 | State Street® SPDR® S&P MIDCAP 400® ETF | 0.73% | 607K | $67.8M | −6,835 (−1.1%) | August 31, 2026 |
| 16 | Fidelity Mid-Cap Stock | 0.73% | 604K | $67.5M | — | August 31, 2026 |
| 17 | Fidelity Value | 0.70% | 576K | $64.4M | — | August 31, 2026 |
| 18 | Robeco BP Global Premium Eqs B EUR | 0.59% | 487K | $54.5M | +143,555 (+41.8%) | August 31, 2026 |
| 19 | Wasatch Core Growth | 0.56% | 459K | $51.3M | +459,065 (0.0%) | June 30, 2026 |
| 20 | First Trust SMID Cp Rising Div Achv ETF | 0.55% | 450K | $50.3M | — | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
ALSN insider transactions
latest 3| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-09 | Eric C Scroggins | Sell | $114.40 | 1,313 | $150,207 |
| 2025-12-31 | John Coll | Sell | $98.79 | 1,791 | $176,933 |
| 2025-05-21 | Ryan A Milburn | Sell | $105.24 | 3,412 | $359,079 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
ALSN shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns ALSN
Institutional investors own 106.6% of Allison Transmission's shares and insiders 0.73%. The largest holder is FMR Inc with 15.04% of the shares (12.4M), as of June 30, 2026. Among the top 20 institutions, 9 added shares and 11 reduced their stake in the latest filings. Short interest is 3.91% of the float, or 2.91 days of average trading volume. The share count fell 53.4% since 2014.
Related: ALSN analyst forecast, ALSN key metrics, ALSN dividend history. See the ALSN stock overview for the latest quote and news.
ALSN ownership FAQ
Who owns the most Allison Transmission stock?
The largest shareholders of Allison Transmission are FMR Inc (15.04%), Vanguard Portfolio Management, LLC (4.83%), BlackRock Inc (4.81%), Vanguard Capital Management, LLC (4.53%), Boston Partners Global Investors, Inc (3.85%).
What percentage of Allison Transmission is owned by institutions?
Institutions hold 106.6% of Allison Transmission's shares outstanding; insiders hold 0.73%.
Which funds own Allison Transmission?
The largest fund holders of Allison Transmission are iShares Core S&P Mid-Cap ETF (3.56%), Vanguard MStar Total Stk Mkt Idx Invest (3.19%), Fidelity Dividend Growth (2.53%), Vanguard Small Cap Index (2.31%), FullerThaler Behavioral Sm-Cp Eq R6 (2.24%).
What is Allison Transmission's short interest?
2.3M shares of Allison Transmission were sold short, 3.91% of the float; at the average daily volume it would take 2.91 days to cover.
Are insiders buying or selling Allison Transmission?
Of the latest 3 reported insider transactions in Allison Transmission (since May 21, 2025), 0 were purchases and 3 were sales.
How many shares of Allison Transmission are outstanding?
Allison Transmission has 82.6M shares outstanding, of which 81.8M are in the public float.