Who owns Allison Transmission Holdings (ALSN)
Which tracked institutional funds hold ALSN, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ALSN company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
91 tracked funds added or opened ALSN while 175 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
ALSN’s largest tracked holder by dollar value, FMR LLC, sizes it at 0.1% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in ALSN divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 535 tracked filers holding ALSN, 247 increased or opened the position and 319 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in ALSN between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 29
- Capital International Investors$95M
- Jupiter Topco LLC$36M
- Covalis Capital LLP$17M
- Assenagon Asset Management S.A.$11M
- Turas Capital Management LP$8M
- TUDOR INVESTMENT CORP ET AL$8M
Full exits 43
- LSV ASSET MANAGEMENT$249M
- Caisse de depot et placement du Quebec$64M
- JANUS HENDERSON GROUP PLC$58M
- NATIXIS ADVISORS, LLC$38M
- JACOBS LEVY EQUITY MANAGEMENT, INC$17M
- Distillate Capital Partners LLC$16M
Largest adds
- WASATCH ADVISORS LP$84M
- BlackRock, Inc.$54M
- JANE STREET GROUP, LLC$49M
- Stockbridge Partners LLC$48M
- UBS Group AG$40M
- NORGES BANK$39M
Largest trims
- FULLER & THALER ASSET MANAGEMENT, INC.$102M
- FMR LLC$51M
- RENAISSANCE TECHNOLOGIES LLC$46M
- BANK OF AMERICA CORP /DE/$46M
- VANGUARD PORTFOLIO MANAGEMENT LLC$41M
- MARSHALL WACE, LLP$34M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| FMR LLC added | 12,417,518 | $1.4B | 16.3% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 3,985,544 | $449M | 5.2% | 2026-Q2 |
| BlackRock, Inc. added | 3,975,802 | $448M | 5.2% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 3,742,337 | $422M | 4.9% | 2026-Q2 |
| Boston Partners added | 3,176,528 | $358M | 4.2% | 2026-Q2 |
| FULLER & THALER ASSET MANAGEMENT, INC. trimmed | 2,622,104 | $296M | 3.4% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 2,027,981 | $229M | 2.7% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 1,938,997 | $219M | 2.5% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 1,917,523 | $216M | 2.5% | 2026-Q2 |
| LONDON CO OF VIRGINIA trimmed | 1,824,581 | $206M | 2.4% | 2026-Q2 |
| FIRST TRUST ADVISORS LP trimmed | 1,806,631 | $204M | 2.4% | 2026-Q2 |
| STATE STREET CORP added | 1,538,166 | $173M | 2.0% | 2026-Q2 |
| WASATCH ADVISORS LP added | 1,510,496 | $170M | 2.0% | 2026-Q2 |
| Stockbridge Partners LLC added | 1,499,984 | $169M | 2.0% | 2026-Q2 |
| BANK OF MONTREAL /CAN/ trimmed | 1,364,810 | $154M | 1.8% | 2026-Q2 |
| NORGES BANK added | 1,255,365 | $142M | 1.6% | 2026-Q2 |
| FEDERATED HERMES, INC. trimmed | 1,236,388 | $139M | 1.6% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 1,130,415 | $127M | 1.5% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 877,339 | $99M | 1.2% | 2026-Q2 |
| MORGAN STANLEY added | 851,524 | $96M | 1.1% | 2026-Q2 |
| Capital International Investors new | 845,961 | $95M | 1.1% | 2026-Q2 |
| CAPTRUST FINANCIAL ADVISORS added | 825,467 | $93M | 1.1% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 824,567 | $93M | 1.1% | 2026-Q2 |
| Quantinno Capital Management LP trimmed | 767,275 | $87M | 1.0% | 2026-Q2 |
| FIFTHDELTA Ltd added | 760,474 | $86M | 1.0% | 2026-Q2 |
| UBS Group AG added | 739,459 | $83M | 1.0% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 737,180 | $83M | 1.0% | 2026-Q2 |
| Allianz Asset Management GmbH trimmed | 707,693 | $80M | 0.9% | 2026-Q2 |
| Invesco Ltd. trimmed | 705,501 | $80M | 0.9% | 2026-Q2 |
| NewEdge Wealth, LLC added | 618,833 | $70M | 0.8% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. trimmed | 595,985 | $67M | 0.8% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 555,034 | $63M | 0.7% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 526,333 | $59M | 0.7% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 525,969 | $59M | 0.7% | 2026-Q2 |
| SEIZERT CAPITAL PARTNERS, LLC trimmed | 512,169 | $58M | 0.7% | 2026-Q2 |
| BRANDES INVESTMENT PARTNERS, LP added | 506,716 | $57M | 0.7% | 2026-Q2 |
| Bank of New York Mellon Corp added | 482,257 | $54M | 0.6% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 478,893 | $54M | 0.6% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 465,028 | $52M | 0.6% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 441,437 | $50M | 0.6% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 414,936 | $47M | 0.5% | 2026-Q2 |
| HARRIS ASSOCIATES L P trimmed | 402,762 | $45M | 0.5% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 401,408 | $45M | 0.5% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 388,108 | $44M | 0.5% | 2026-Q2 |
| JONES FINANCIAL COMPANIES LLLP added | 369,520 | $44M | 0.5% | 2026-Q2 |
| Gotham Asset Management, LLC trimmed | 361,748 | $41M | 0.5% | 2026-Q2 |
| Jain Global LLC trimmed | 346,119 | $39M | 0.5% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 335,359 | $39M | 0.5% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 330,790 | $39M | 0.4% | 2026-Q2 |
| Jupiter Topco LLC new | 320,397 | $36M | 0.4% | 2026-Q2 |
| CLIFFORD SWAN INVESTMENT COUNSEL LLC trimmed | 316,379 | $36M | 0.4% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 315,091 | $36M | 0.4% | 2026-Q2 |
| NEUBERGER BERMAN GROUP LLC added | 307,907 | $35M | 0.4% | 2026-Q2 |
| Solidarity Wealth, LLC added | 303,035 | $34M | 0.4% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 301,121 | $34M | 0.4% | 2026-Q2 |
| FIL Ltd trimmed | 289,026 | $33M | 0.4% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 274,521 | $31M | 0.4% | 2026-Q2 |
| Freestone Grove Partners LP trimmed | 272,676 | $31M | 0.4% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC trimmed | 271,313 | $31M | 0.4% | 2026-Q2 |
| Woodline Partners LP trimmed | 248,325 | $28M | 0.3% | 2026-Q2 |
| Arbejdsmarkedets Tillaegspension added | 237,000 | $27M | 0.3% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 234,886 | $26M | 0.3% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 216,374 | $24M | 0.3% | 2026-Q2 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 215,000 | $24M | 0.3% | 2026-Q2 |
| LAZARD ASSET MANAGEMENT LLC trimmed | 208,494 | $24M | 0.3% | 2026-Q2 |
| BURNEY CO/ trimmed | 207,950 | $23M | 0.3% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 195,218 | $22M | 0.3% | 2026-Q2 |
| NORRIS PERNE & FRENCH LLP/MI added | 195,084 | $22M | 0.3% | 2026-Q2 |
| COOKSON PEIRCE & CO INC added | 185,818 | $21M | 0.2% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 181,979 | $21M | 0.2% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC added | 181,246 | $20M | 0.2% | 2026-Q2 |
| Vest Financial, LLC trimmed | 181,190 | $20M | 0.2% | 2026-Q2 |
| California Public Employees Retirement System trimmed | 174,662 | $20M | 0.2% | 2026-Q2 |
| Swiss National Bank added | 166,800 | $19M | 0.2% | 2026-Q2 |
| DUDLEY & SHANLEY, INC. added | 165,037 | $19M | 0.2% | 2026-Q2 |
| Polaris Capital Management, LLC trimmed | 164,900 | $19M | 0.2% | 2026-Q2 |
| FRANKLIN RESOURCES INC trimmed | 163,826 | $18M | 0.2% | 2026-Q2 |
| Nuveen, LLC trimmed | 159,997 | $18M | 0.2% | 2026-Q2 |
| MAC Alpha Capital Management, LP added | 156,191 | $18M | 0.2% | 2026-Q2 |
| BRUNI J V & CO /CO trimmed | 155,235 | $18M | 0.2% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 153,116 | $17M | 0.2% | 2026-Q2 |
| ALPS ADVISORS INC trimmed | 148,690 | $17M | 0.2% | 2026-Q2 |
| WEDGE CAPITAL MANAGEMENT L L P/NC added | 146,537 | $17M | 0.2% | 2026-Q2 |
| Covalis Capital LLP new | 146,525 | $17M | 0.2% | 2026-Q2 |
| Universal- Beteiligungs- und Servicegesellschaft mbH added | 141,397 | $16M | 0.2% | 2026-Q2 |
| SCHRODER INVESTMENT MANAGEMENT GROUP added | 141,385 | $16M | 0.2% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 139,152 | $16M | 0.2% | 2026-Q2 |
| J. Goldman & Co LP trimmed | 133,778 | $15M | 0.2% | 2026-Q2 |
| Verition Fund Management LLC trimmed | 129,122 | $15M | 0.2% | 2026-Q2 |
| Walleye Capital LLC trimmed | 125,743 | $14M | 0.2% | 2026-Q2 |
| Driehaus Capital Management LLC trimmed | 123,193 | $14M | 0.2% | 2026-Q2 |
| ALGERT GLOBAL LLC added | 121,849 | $14M | 0.2% | 2026-Q2 |
| CANADA PENSION PLAN INVESTMENT BOARD added | 120,600 | $14M | 0.2% | 2026-Q2 |
| Empowered Funds, LLC trimmed | 120,174 | $14M | 0.2% | 2026-Q2 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND added | 115,000 | $13M | 0.2% | 2026-Q2 |
| Allspring Global Investments Holdings, LLC trimmed | 107,489 | $13M | 0.1% | 2026-Q2 |
| Mountain Lake Investment Management LLC trimmed | 106,541 | $12M | 0.1% | 2026-Q2 |
| Assenagon Asset Management S.A. trimmed | 100,489 | $11M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 96,535 | $11M | 0.1% | 2026-Q2 |
| Corient Private Wealth LP trimmed | 93,172 | $11M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.