Who owns AMX
Which tracked institutional funds hold AMX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See AMX 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
63 tracked funds added or opened AMX while 48 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
AMX’s largest tracked holder by dollar value, FMR LLC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes AMX more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in AMX 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 335 tracked filers holding AMX, 154 increased or opened the position and 148 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
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 AMX 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 16
- WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC$52M
- AXIOM INVESTORS LLC /DE$37M
- INCA Investments LLC$32M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$9M
- TSP Capital Management Group, LLC$5M
- NEW YORK STATE COMMON RETIREMENT FUND$5M
Full exits 21
- Amundi$61M
- JANE STREET GROUP, LLC$7M
- Janney Montgomery Scott LLC$4M
- Thrivent Financial for Lutherans$4M
- HANTZ FINANCIAL SERVICES, INC.$3M
- MILLENNIUM MANAGEMENT LLC$3M
Largest adds
- BANK OF AMERICA CORP /DE/$106M
- Westwood Global Investments, LLC$28M
- MORGAN STANLEY$23M
- NOMURA ASSET MANAGEMENT INTERNATIONAL INC.$14M
- Capital Wealth Planning, LLC$12M
- LAZARD ASSET MANAGEMENT LLC$12M
Largest trims
- Capital International Investors$109M
- BANK OF MONTREAL /CAN/$30M
- Robeco Institutional Asset Management B.V.$14M
- TEACHER RETIREMENT SYSTEM OF TEXAS$11M
- Boston Partners$11M
- DISCOVERY CAPITAL MANAGEMENT, LLC / CT$10M
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 trimmed | 24,474,821 | $636M | 15.1% | 2026-Q2 |
| LAZARD ASSET MANAGEMENT LLC added | 20,859,778 | $542M | 12.9% | 2026-Q2 |
| Capital World Investors added | 13,893,568 | $361M | 8.6% | 2026-Q2 |
| Westwood Global Investments, LLC added | 13,194,202 | $343M | 8.1% | 2026-Q2 |
| Robeco Institutional Asset Management B.V. trimmed | 7,223,875 | $188M | 4.5% | 2026-Q2 |
| Boston Partners trimmed | 6,636,318 | $172M | 4.1% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 6,312,425 | $164M | 3.9% | 2026-Q2 |
| Capital International Investors trimmed | 5,824,597 | $151M | 3.6% | 2026-Q2 |
| MORGAN STANLEY added | 5,169,238 | $134M | 3.2% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 4,190,435 | $109M | 2.6% | 2026-Q2 |
| DISCOVERY CAPITAL MANAGEMENT, LLC / CT trimmed | 3,988,067 | $104M | 2.5% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC trimmed | 3,382,229 | $88M | 2.1% | 2026-Q2 |
| BRANDES INVESTMENT PARTNERS, LP added | 3,093,426 | $80M | 1.9% | 2026-Q2 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. added | 2,704,122 | $70M | 1.7% | 2026-Q2 |
| Allspring Global Investments Holdings, LLC trimmed | 2,240,903 | $57M | 1.4% | 2026-Q2 |
| TEACHER RETIREMENT SYSTEM OF TEXAS trimmed | 2,200,300 | $57M | 1.4% | 2026-Q2 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC new | 2,010,385 | $52M | 1.2% | 2026-Q2 |
| FIRST TRUST ADVISORS LP trimmed | 2,006,212 | $52M | 1.2% | 2026-Q2 |
| Itau Unibanco Holding S.A. trimmed | 1,990,963 | $52M | 1.2% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 1,869,653 | $49M | 1.2% | 2026-Q2 |
| Capital Wealth Planning, LLC added | 1,493,364 | $39M | 0.9% | 2026-Q2 |
| AXIOM INVESTORS LLC /DE new | 1,408,480 | $37M | 0.9% | 2026-Q2 |
| GLENMEDE TRUST CO NA trimmed | 1,314,391 | $34M | 0.8% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP added | 1,256,073 | $33M | 0.8% | 2026-Q2 |
| Rockefeller Capital Management L.P. added | 1,233,279 | $32M | 0.8% | 2026-Q2 |
| INCA Investments LLC new | 1,232,789 | $32M | 0.8% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 1,115,185 | $29M | 0.7% | 2026-Q2 |
| NAN FUNG TRINITY (HK) LTD trimmed | 1,055,500 | $27M | 0.7% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC added | 1,049,867 | $27M | 0.6% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 947,318 | $25M | 0.6% | 2026-Q2 |
| Connor, Clark & Lunn Investment Management Ltd. added | 934,758 | $24M | 0.6% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 820,228 | $21M | 0.5% | 2026-Q2 |
| UBS Group AG added | 799,181 | $21M | 0.5% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 684,787 | $18M | 0.4% | 2026-Q2 |
| Capital International, Inc./CA/ trimmed | 656,615 | $17M | 0.4% | 2026-Q2 |
| CAPITAL INTERNATIONAL SARL trimmed | 648,782 | $17M | 0.4% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 646,054 | $17M | 0.4% | 2026-Q2 |
| BlackRock, Inc. added | 601,929 | $16M | 0.4% | 2026-Q2 |
| SEI INVESTMENTS CO added | 578,707 | $15M | 0.4% | 2026-Q2 |
| Invesco Ltd. added | 542,487 | $14M | 0.3% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 539,088 | $14M | 0.3% | 2026-Q2 |
| SCHRODER INVESTMENT MANAGEMENT GROUP added | 534,464 | $14M | 0.3% | 2026-Q2 |
| ABC ARBITRAGE SA added | 512,433 | $13M | 0.3% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 474,925 | $12M | 0.3% | 2026-Q2 |
| Tidal Investments LLC added | 436,962 | $11M | 0.3% | 2026-Q2 |
| CITIGROUP INC added | 423,442 | $11M | 0.3% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 397,912 | $10M | 0.2% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 364,262 | $9M | 0.2% | 2026-Q2 |
| State of New Jersey Common Pension Fund D | 329,100 | $9M | 0.2% | 2026-Q2 |
| CAPITAL INTERNATIONAL LTD /CA/ added | 308,635 | $8M | 0.2% | 2026-Q2 |
| GABELLI FUNDS LLC | 294,500 | $8M | 0.2% | 2026-Q2 |
| LPL Financial LLC trimmed | 221,569 | $6M | 0.1% | 2026-Q2 |
| ASSETMARK, INC added | 204,067 | $5M | 0.1% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 193,004 | $5M | 0.1% | 2026-Q2 |
| TSP Capital Management Group, LLC trimmed | 189,121 | $5M | 0.1% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND new | 188,392 | $5M | 0.1% | 2026-Q2 |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC added | 179,050 | $5M | 0.1% | 2026-Q2 |
| Creative Planning added | 173,099 | $4M | 0.1% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 171,455 | $4M | 0.1% | 2026-Q2 |
| MANNING & NAPIER ADVISORS LLC trimmed | 168,613 | $5M | 0.1% | 2026-Q2 |
| OPAL CAPITAL LLC added | 167,984 | $4M | 0.1% | 2026-Q2 |
| TrueMark Investments, LLC added | 167,984 | $4M | 0.1% | 2026-Q2 |
| M&T Bank Corp trimmed | 164,510 | $4M | 0.1% | 2026-Q2 |
| Raiffeisen Bank International AG added | 155,320 | $4M | 0.1% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 149,580 | $4M | 0.1% | 2026-Q2 |
| Cetera Investment Advisers added | 143,906 | $4M | 0.1% | 2026-Q2 |
| Henry James International Management Inc. | 142,565 | $4M | 0.1% | 2026-Q2 |
| GAM Holding AG | 128,322 | $3M | 0.1% | 2026-Q2 |
| AIA Group Ltd | 121,772 | $3M | 0.1% | 2026-Q2 |
| Nuveen, LLC new | 117,582 | $3M | 0.1% | 2026-Q2 |
| Crossmark Global Holdings, Inc. added | 114,407 | $3M | 0.1% | 2026-Q2 |
| US BANCORP \DE\ trimmed | 113,860 | $3M | 0.1% | 2026-Q2 |
| STIFEL FINANCIAL CORP added | 109,577 | $3M | 0.1% | 2026-Q2 |
| CITADEL ADVISORS LLC trimmed | 107,426 | $3M | 0.1% | 2026-Q2 |
| COMMONWEALTH EQUITY SERVICES, LLC trimmed | 101,796 | $3M | 0.1% | 2026-Q2 |
| American Trust Investment Advisors, LLC trimmed | 98,183 | $3M | 0.1% | 2026-Q2 |
| Quantinno Capital Management LP added | 95,507 | $2M | 0.1% | 2026-Q2 |
| Advisors Asset Management, Inc. added | 95,383 | $2M | 0.1% | 2026-Q2 |
| Asset Management One Co., Ltd. | 87,252 | $2M | 0.1% | 2026-Q2 |
| XTX Topco Ltd trimmed | 85,635 | $2M | 0.1% | 2026-Q2 |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO added | 78,684 | $2M | 0.0% | 2026-Q2 |
| CAPITAL GROUP INVESTMENT MANAGEMENT PTE. LTD. | 77,927 | $2M | 0.0% | 2026-Q2 |
| Northwest & Ethical Investments L.P. added | 75,638 | $2M | 0.0% | 2026-Q2 |
| AUXIER ASSET MANAGEMENT LLC trimmed | 75,030 | $2M | 0.0% | 2026-Q2 |
| BANK OF MONTREAL /CAN/ trimmed | 73,867 | $2M | 0.0% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 73,398 | $2M | 0.0% | 2026-Q2 |
| Corient Private Wealth LP added | 72,981 | $2M | 0.0% | 2026-Q2 |
| Vest Financial, LLC added | 71,588 | $2M | 0.0% | 2026-Q2 |
| QUADRANT CAPITAL GROUP LLC trimmed | 69,409 | $2M | 0.0% | 2026-Q2 |
| Faithward Advisors, LLC trimmed | 68,043 | $2M | 0.0% | 2026-Q2 |
| OSAIC HOLDINGS, INC. added | 60,305 | $2M | 0.0% | 2026-Q2 |
| STATE STREET CORP added | 59,194 | $2M | 0.0% | 2026-Q2 |
| Mariner, LLC added | 58,344 | $2M | 0.0% | 2026-Q2 |
| KLEIN PAVLIS & PEASLEY FINANCIAL, INC. trimmed | 57,155 | $1M | 0.0% | 2026-Q2 |
| Essex Financial Services, Inc. | 53,340 | $1M | 0.0% | 2026-Q2 |
| MML INVESTORS SERVICES, LLC added | 50,193 | $1M | 0.0% | 2026-Q2 |
| NewEdge Advisors, LLC added | 48,150 | $1M | 0.0% | 2026-Q2 |
| PROFUND ADVISORS LLC trimmed | 48,042 | $1M | 0.0% | 2026-Q2 |
| Callan Family Office, LLC trimmed | 47,153 | $1M | 0.0% | 2026-Q2 |
| Y-Intercept (Hong Kong) Ltd trimmed | 42,801 | $1M | 0.0% | 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.