% of shares outstanding not shown: this line files 20-F annual reports only — a foreign private issuer whose US listing trades as ADSs (depositary receipts), while its cover-page share count is in ORDINARY shares. The depositary ratio is not in our data. The count we hold for this line is 1,256,010,314 shares (as of 2025-12-31, source dei). Dividing one by the other is wrong by the whole ratio (a 5:1 ADR reads one fifth of the true percentage), so the percentage is withheld rather than served wrong. Holder share counts are shown as filed.
Crowding percentile withheld — no market cap for RIO in the served universe — the cohort is size-matched, and an unmatched percentile would compare a micro-cap register to a mega-cap one.
| # | Holder | Shares | Value | % of shares out | Δ QoQ |
|---|---|---|---|---|---|
| 1 | Fisher Asset Management, LLC | 20,135,99220.1M | $1.9B | — | ADD 3% |
| 2 | STATE FARM MUTUAL AUTOMOBILE INSURANCE CO | 10,931,82010.9M | $1.0B | — | — |
| 3 | GOLDMAN SACHS GROUP INC | 8,813,9888.8M | $822M | — | TRIM -20% |
| 4 | MORGAN STANLEY | 4,889,3744.9M | $456M | — | TRIM -14% |
| 5 | MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 4,237,7514.2M | $395M | — | ADD 5% |
| 6 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 3,710,2243.7M | $346M | — | TRIM -5% |
| 7 | BANK OF AMERICA CORP /DE/ | 3,623,2943.6M | $338M | — | ADD 7% |
| 8 | NEUBERGER BERMAN GROUP LLC | 2,454,9022.5M | $229M | — | ADD 10% |
| 9 | Qube Research & Technologies Ltd | 2,377,3042.4M | $222M | — | — |
| 10 | FMR LLC | 2,180,1862.2M | $203M | — | ADD 13% |
| 11 | BlackRock, Inc. | 2,108,2952.1M | $197M | — | ADD 19% |
| 12 | BANK OF MONTREAL /CAN/ | 2,056,3472.1M | $192M | — | TRIM -7% |
| 13 | Grantham, Mayo, Van Otterloo & Co. LLC | 2,004,8372.0M | $187M | — | ADD 28% |
| 14 | Harding Loevner LP | 1,971,2272.0M | $184M | — | TRIM -4% |
| 15 | JPMORGAN CHASE & CO | 1,949,7531.9M | $173M | — | ADD 42% |
| 16 | NORTHERN TRUST CORP | 1,839,5821.8M | $172M | — | ADD 8% |
| 17 | NATIXIS ADVISORS, LLC | 1,748,9651.7M | $163M | — | ADD 10% |
| 18 | DIMENSIONAL FUND ADVISORS LP | 1,682,9271.7M | $157M | — | TRIM -5% |
| 19 | JONES FINANCIAL COMPANIES LLLP | 1,725,8011.7M | $150M | — | ADD 3566% |
| 20 | CITIGROUP INC | 1,544,5791.5M | $144M | — | ADD 3% |
| 21 | EARNEST PARTNERS LLC | 1,442,9861.4M | $135M | — | TRIM -5% |
| 22 | BNP PARIBAS FINANCIAL MARKETS | 1,436,2751.4M | $134M | — | TRIM -20% |
| 23 | UBS Group AG | 1,311,6391.3M | $122M | — | ADD 17% |
| 24 | WELLS FARGO & COMPANY/MN | 1,302,1791.3M | $121M | — | TRIM -3% |
| 25 | ROYAL BANK OF CANADA | 1,199,0101.2M | $112M | — | TRIM -8% |
| 26 | Altshuler Shaham Ltd | 1,144,0001.1M | $107M | — | NEW |
| 27 | Palliser Capital (UK) Ltd | 1,037,2331.0M | $97M | — | TRIM -14% |
| 28 | JANE STREET GROUP, LLC | 1,003,4251.0M | $94M | — | NEW |
| 29 | RENAISSANCE TECHNOLOGIES LLC | 965,800965,800 | $90M | — | ADD 418% |
| 30 | Clearbridge Investments, LLC | 892,474892,474 | $83M | — | NEW |
| 31 | TODD ASSET MANAGEMENT LLC | 874,659874,659 | $82M | — | TRIM -19% |
| 32 | RAYMOND JAMES FINANCIAL INC | 871,668871,668 | $81M | — | ADD 15% |
| 33 | ENVESTNET ASSET MANAGEMENT INC | 838,415838,415 | $78M | — | ADD 55% |
| 34 | FRANKLIN RESOURCES INC | 784,232784,232 | $73M | — | TRIM -44% |
| 35 | MILFORD FUNDS LTD | 671,339671,339 | $63M | — | TRIM -42% |
| 36 | Cullen Capital Management, LLC | 656,864656,864 | $61M | — | ADD 32% |
| 37 | DEUTSCHE BANK AG\ | 641,205641,205 | $60M | — | TRIM -71% |
| 38 | 1832 Asset Management L.P. | 640,080640,080 | $60M | — | ADD 2% |
| 39 | WELLINGTON MANAGEMENT GROUP LLP | 624,596624,596 | $58M | — | TRIM -30% |
| 40 | AMERICAN CENTURY COMPANIES INC | 595,530595,530 | $56M | — | ADD 42% |
| 41 | SEI INVESTMENTS CO | 564,191564,191 | $53M | — | — |
| 42 | TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY | 545,770545,770 | $51M | — | TRIM -22% |
| 43 | CAPITAL ADVISORS INC/OK | 529,596529,596 | $49M | — | — |
| 44 | ADAGE CAPITAL PARTNERS GP, L.L.C. | 524,602524,602 | $49M | — | TRIM -22% |
| 45 | FIRST TRUST ADVISORS LP | 519,977519,977 | $49M | — | TRIM -8% |
| 46 | LPL Financial LLC | 514,691514,691 | $48M | — | ADD 12% |
| 47 | Creative Planning | 505,442505,442 | $47M | — | ADD 10% |
| 48 | HRT FINANCIAL LP | 460,035460,035 | $43M | — | ADD 209% |
| 49 | BARCLAYS PLC | 453,897453,897 | $42M | — | ADD 3% |
| 50 | AMERIPRISE FINANCIAL INC | 443,751443,751 | $41M | — | TRIM -15% |
| 51 | Pacific Heights Asset Management LLC | 425,000425,000 | $40M | — | — |
| 52 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 368,340368,340 | $39M | — | ADD 6% |
| 53 | Aberdeen Group plc | 403,172403,172 | $38M | — | — |
| 54 | KORNITZER CAPITAL MANAGEMENT INC /KS | 287,629287,629 | $27M | — | — |
| 55 | ABC ARBITRAGE SA | 279,807279,807 | $26M | — | TRIM -17% |
| 56 | GABELLI FUNDS LLC | 276,300276,300 | $26M | — | TRIM -25% |
| 57 | CITADEL ADVISORS LLC | 254,948254,948 | $24M | — | TRIM -69% |
| 58 | FIL Ltd | 246,237246,237 | $23M | — | ADD 4% |
| 59 | NATIONAL BANK OF CANADA /FI/ | 240,622240,622 | $22M | — | TRIM -72% |
| 60 | ANCHOR CAPITAL ADVISORS LLC | 234,303234,303 | $22M | — | ADD 12% |
| 61 | STIFEL FINANCIAL CORP | 234,226234,226 | $22M | — | TRIM -4% |
| 62 | BANCO BILBAO VIZCAYA ARGENTARIA, S.A. | 212,538212,538 | $20M | — | ADD 1252% |
| 63 | SG Americas Securities, LLC | 206,862206,862 | $19M | — | ADD 84% |
| 64 | Quantinno Capital Management LP | 200,280200,280 | $19M | — | ADD 33% |
| 65 | Oak Harvest Investment Services | 197,554197,554 | $18M | — | ADD 4% |
| 66 | SteelPeak Wealth, LLC | 191,195191,195 | $18M | — | TRIM -3% |
| 67 | Cullen/Frost Bankers, Inc. | 195,769195,769 | $18M | — | ADD 5% |
| 68 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 194,311194,311 | $18M | — | ADD 20% |
| 69 | JENNISON ASSOCIATES LLC | 192,748192,748 | $18M | — | ADD 3% |
| 70 | OSAIC HOLDINGS, INC. | 186,490186,490 | $17M | — | TRIM -6% |
| 71 | VAN ECK ASSOCIATES CORP | 185,375185,375 | $17M | — | TRIM -12% |
| 72 | O'SHAUGHNESSY ASSET MANAGEMENT, LLC | 183,998183,998 | $17M | — | ADD 12% |
| 73 | Cetera Investment Advisers | 181,852181,852 | $17M | — | ADD 5% |
| 74 | Catalyst Funds Management Pty Ltd | 175,307175,307 | $16M | — | TRIM -42% |
| 75 | SCS Capital Management LLC | 170,697170,697 | $16M | — | ADD 5925% |
| 76 | SCOTIA CAPITAL INC. | 172,289172,289 | $16M | — | ADD 91% |
| 77 | NEW YORK STATE COMMON RETIREMENT FUND | 170,402170,402 | $16M | — | TRIM -5% |
| 78 | Bell Bank | 149,635149,635 | $14M | — | TRIM -12% |
| 79 | Capital Wealth Planning, LLC | 145,308145,308 | $14M | — | ADD 19% |
| 80 | Greenline Partners, LLC | 144,834144,834 | $14M | — | — |
| 81 | OPPENHEIMER ASSET MANAGEMENT INC. | 140,494140,494 | $13M | — | ADD 23% |
| 82 | COHEN & STEERS, INC. | 137,879137,879 | $13M | — | — |
| 83 | Bank of New York Mellon Corp | 137,651137,651 | $13M | — | — |
| 84 | Foresight Global Investors, Inc. | 133,534133,534 | $12M | — | TRIM -18% |
| 85 | QSM Asset Management Ltd | 135,057135,057 | $12M | — | TRIM -41% |
| 86 | COMMONWEALTH EQUITY SERVICES, LLC | 129,867129,867 | $12M | — | TRIM -34% |
| 87 | Kapitalo Investimentos Ltda | 127,754127,754 | $12M | — | — |
| 88 | AQR CAPITAL MANAGEMENT LLC | 127,144127,144 | $12M | — | ADD 136% |
| 89 | Sanctuary Advisors, LLC | 126,914126,914 | $12M | — | ADD 13% |
| 90 | Segment Wealth Management, LLC | 124,387124,387 | $12M | — | NEW |
| 91 | Rockefeller Capital Management L.P. | 120,952120,952 | $11M | — | TRIM -8% |
| 92 | CIDEL ASSET MANAGEMENT INC | 120,181120,181 | $11M | — | — |
| 93 | Old West Investment Management, LLC | 118,777118,777 | $11M | — | ADD 736% |
| 94 | Moran Wealth Management, LLC | 117,834117,834 | $11M | — | ADD 8% |
| 95 | Cambridge Investment Research Advisors, Inc. | 114,611114,611 | $11M | — | ADD 24% |
| 96 | Bridgewater Associates, LP | 114,239114,239 | $11M | — | ADD 1107% |
| 97 | D.A. DAVIDSON & CO. | 114,094114,094 | $11M | — | TRIM -8% |
| 98 | MARSHALL WACE, LLP | 114,028114,028 | $11M | — | ADD 394% |
| 99 | SummitTX Capital, L.P. | 113,025113,025 | $11M | — | ADD 208% |
| 100 | US BANCORP \DE\ | 112,087112,087 | $10M | — | ADD 13% |
Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.
| Holder | 2024-Q4 | 2025-Q1 | 2025-Q2 | 2025-Q3 | 2025-Q4 | 2026-Q1 | Latest value |
|---|---|---|---|---|---|---|---|
| Fisher Asset Management, LLC | 17.6M | 17.8M | 18.6M | 19.1M | 19.6M | 20.1M | $1.9B |
| STATE FARM MUTUAL AUTOMOBILE INSURANCE CO | 10.9M | 10.9M | 10.9M | 10.9M | 10.9M | 10.9M | $1.0B |
| GOLDMAN SACHS GROUP INC | 8.0M | 8.3M | 9.3M | 10.9M | 11.0M | 8.8M | $822M |
| MORGAN STANLEY | 8.8M | 7.5M | 7.1M | 6.0M | 5.7M | 4.9M | $456M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 10K | 11K | 36K | 26K | 4.0M | 4.2M | $395M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 251K | — | — | 1.4M | 3.9M | 3.7M | $346M |
| BANK OF AMERICA CORP /DE/ | 2.1M | 2.3M | 2.4M | 3.2M | 3.4M | 3.6M | $338M |
| NEUBERGER BERMAN GROUP LLC | 661K | 616K | 584K | 2.0M | 2.2M | 2.5M | $229M |
| Qube Research & Technologies Ltd | 1.5M | 2.0M | 2.2M | 2.5M | 2.4M | 2.4M | $222M |
| FMR LLC | 1.7M | 1.9M | 1.5M | 1.9M | 1.9M | 2.2M | $203M |
| BlackRock, Inc. | 1.4M | 1.4M | 1.3M | 1.5M | 1.8M | 2.1M | $197M |
| BANK OF MONTREAL /CAN/ | 1.5M | 1.1M | 1.9M | 2.0M | 2.2M | 2.1M | $192M |
| Grantham, Mayo, Van Otterloo & Co. LLC | 387K | 772K | 926K | 1.1M | 1.6M | 2.0M | $187M |
| Harding Loevner LP | 2.0M | 2.0M | 1.9M | 1.9M | 2.1M | 2.0M | $184M |
| JPMORGAN CHASE & CO | 959K | 1.5M | 2.2M | 7.4M | 1.4M | 1.9M | $173M |
Shares reported each quarter by the largest current holders. Green = added vs the prior filing, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.
Holder count only — too few computable %-of-shares-outstanding quarters for a % pane. Line breaks are quarters with no 13F record, never interpolated.
Short interest has its own tab now — open SI →
Source: SEC Form 13F — every institution manager (≥ $100M in 13F securities) reporting a long US-listed position, across ~10,250 filers over 10 years of history. 13F is long-only, US-listed, filed up to 45 days after quarter-end.
| Holder | % of class | Type | As of | |
|---|---|---|---|---|
| BlackRock, Inc. | 7.1% | QII | 2025-03-31 | SEC → |
Source: SEC Schedule 13D/13G structured XML. 13D = active intent; 13G filers report passively (Rule 13d-1(b) QII / 13d-1(c) Passive / 13d-1(d) Exempt) and are not activists. Percent and delta are the group aggregate the filing reports. Structured 13D/G coverage begins December 2024 (SEC XML mandate).
| Biggest buyers | Δ shares | Δ value | |
|---|---|---|---|
| JONES FINANCIAL COMPANIES LLLP | +1,678,725 | $157M | ADD |
| Altshuler Shaham Ltd | +1,144,000 | $107M | OPEN |
| JANE STREET GROUP, LLC | +1,003,425 | $94M | OPEN |
| Clearbridge Investments, LLC | +892,474 | $83M | OPEN |
| RENAISSANCE TECHNOLOGIES LLC | +779,200 | $73M | ADD |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| GOLDMAN SACHS GROUP INC | −2,150,796 | $201M | TRIM |
| DEUTSCHE BANK AG\ | −1,575,730 | $147M | TRIM |
| MANGROVE PARTNERS IM, LLC | −998,661 | $93M | CLOSE |
| MORGAN STANLEY | −815,543 | $76M | TRIM |
| FRANKLIN RESOURCES INC | −611,423 | $57M | TRIM |
The 2025-Q4 register is as-filed in ITS OWN share basis; every count below was rebased into the 2026-Q1 basis (no split in between, factor 1). Dollar figures value the SHARE delta at one price — the 2026-03-31 close — rather than differencing two filings' own reported values, which would mix the quarter's price move into the trade figure.
13Fs disclose LONG US-listed positions only — shorts, most derivatives, bonds and non-US listings are invisible here, and a filer's quarter-over-quarter change is not necessarily a trade (index rebalances, in-kind transfers and entity successions all read as flow).
| Quarter | Holders | Shares held | % shares out | Value held |
|---|---|---|---|---|
| 2026-Q1 | 930 | 127,149,238 | — | $11.8B |
| 2025-Q4 | 874 | 129,241,499 | — | $10.3B |
| 2025-Q3 | 765 | 127,266,153 | — | $8.4B |
| 2025-Q2 | 742 | 123,582,126 | — | $7.2B |
| 2025-Q1 | 779 | 136,685,128 | — | $8.0B |
| 2024-Q4 | 752 | 131,141,518 | — | $7.7B |
| 2024-Q3 | 758 | 133,704,746 | — | $9.5B |
| 2024-Q2 | 752 | 133,864,058 | — | $8.8B |
| 2024-Q1 | 749 | 138,959,147 | — | $8.9B |
| 2023-Q4 | 769 | 136,153,332 | — | $10.1B |
| 2023-Q3 | 712 | 130,593,502 | — | $8.3B |
| 2023-Q2 | 709 | 125,792,721 | — | $8.0B |
| 2023-Q1 | 721 | 134,628,062 | — | $9.1B |
| 2022-Q4 | 679 | 140,318,732 | — | $9.8B |
| 2022-Q3 | 633 | 131,448,138 | — | $7.2B |
| 2022-Q2 | 660 | 124,385,539 | — | $7.6B |
| 2022-Q1 | 680 | 126,504,546 | — | $10.2B |
| 2021-Q4 | 603 | 114,480,082 | — | $7.7B |
| 2021-Q3 | 578 | 102,504,565 | — | $6.8B |
| 2021-Q2 | 610 | 100,155,916 | — | $8.4B |
| 2021-Q1 | 588 | 98,924,827 | — | $7.7B |
| 2020-Q4 | 531 | 94,784,473 | — | $7.1B |
| 2020-Q3 | 454 | 96,101,380 | — | $5.8B |
| 2020-Q2 | 416 | 97,457,797 | — | $5.5B |
| 2020-Q1 | 392 | 94,685,126 | — | $4.3B |
| 2019-Q4 | 427 | 94,378,386 | — | $5.6B |
| 2019-Q3 | 391 | 93,111,700 | — | $4.8B |
| 2019-Q2 | 427 | 104,801,455 | — | $6.5B |
| 2019-Q1 | 406 | 109,719,968 | — | $6.5B |
| 2018-Q4 | 389 | 100,551,767 | — | $4.9B |
| 2018-Q3 | 392 | 93,183,147 | — | $4.7B |
| 2018-Q2 | 404 | 94,308,526 | — | $5.2B |
| 2018-Q1 | 389 | 94,993,033 | — | $4.9B |
| 2017-Q4 | 372 | 97,302,184 | — | $5.1B |
| 2017-Q3 | 336 | 97,951,893 | — | $4.6B |
| 2017-Q2 | 325 | 94,570,044 | — | $4.0B |
| 2017-Q1 | 329 | 97,352,182 | — | $4.0B |
| 2016-Q4 | 302 | 96,119,434 | — | $3.7B |
| 2016-Q3 | 278 | 90,358,704 | — | $3.0B |
| 2016-Q2 | 274 | 88,656,056 | — | $2.8B |
| 2016-Q1 | 261 | 86,946,718 | — | $2.5B |
| 2015-Q4 | 254 | 95,715,550 | — | $2.8B |
| 2015-Q3 | 278 | 99,206,921 | — | $3.4B |
| 2015-Q2 | 292 | 105,461,150 | — | $4.3B |
| 2015-Q1 | 306 | 108,614,319 | — | $4.5B |
| 2014-Q4 | 301 | 107,152,504 | — | $4.9B |
| 2014-Q3 | 307 | 103,707,633 | — | $5.1B |
| 2014-Q2 | 316 | 99,068,527 | — | $5.4B |
| 2014-Q1 | 300 | 101,551,230 | — | $5.7B |
| 2013-Q4 | 303 | 96,564,863 | — | $5.5B |
| 2013-Q3 | 290 | 100,915,823 | — | $4.9B |
| 2013-Q2 | 286 | 91,033,337 | — | $3.7B |
| 2013-Q1 | 23 | 784,945 | — | $37M |
