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RIO Institutional Ownership & 13F Holders | SmartMoneyDB

RIORIO TINTO PLC ADR

COM · CUSIP 767204100

Smart Money Ownership

Of the 14 tracked institutions holding RIO, 9 have a 3-year clone track record — 6 of them beat the S&P. Average holder's clone alpha: +2.7pt. It's a gauge of who owns the name, not just how many.

Jim Simons

$90.1M · 0.1% of book

RIO (RIO TINTO PLC ADR) Institutional Ownership Summary

Among the 14 tracked institutional investors we monitor, RIO (RIO TINTO PLC ADR) is held with a combined value of $2.73B across 29,265,691 shares. The largest holder is Fisher Asset Management, LLC with a position worth $1.88B (0.64% of their portfolio). 8 funds increased their holdings. 5 funds reduced their position.

Total Institutional Value

$2.73B

Total Shares Held

29,265,691

Institutional Holders

This Quarter's Biggest Movers

Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.

Biggest Buyers

RENAISSANCE TECHNOLOGIES LLC+418% shares~$72.7M Fisher Asset Management, LLC+3% shares~$45.8M Grantham, Mayo, Van Otterloo & Co. LLC+28% shares~$40.7M BlackRock, Inc.+19% shares~$31.3M FMR LLC+13% shares~$23.7M

13F Institutional Holders

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Fisher Asset Management, LLC

Grantham, Mayo, Van Otterloo & Co. LLC

0.48% of book+27.8%

$187.03M

RENAISSANCE TECHNOLOGIES LLC

0.14% of book+417.6%

$90.10M

WELLINGTON MANAGEMENT GROUP LLP

0.01% of book-29.6%

$58.27M

ADAGE CAPITAL PARTNERS GP, L.L.C.

MILLENNIUM MANAGEMENT LLC

0.01% of book-33.7%

$19.28M

AQR CAPITAL MANAGEMENT LLC

0.01% of book+135.7%

$11.86M

#	Fund	Value↓	Shares	Portfolio %	Change
1	Fisher Asset Management, LLC	$1.88B	20,135,992	0.64%	+2.5%
2	FMR LLC	$203.39M	2,180,186	0.01%	+13.2%
3	BlackRock, Inc.	$196.68M	2,108,295	0.00%	+18.9%
4	Grantham, Mayo, Van Otterloo & Co. LLC	$187.03M	2,004,837	0.48%	+27.8%
5	RENAISSANCE TECHNOLOGIES LLC	$90.10M	965,800	0.14%	+417.6%
6	WELLINGTON MANAGEMENT GROUP LLP	$58.27M	624,596	0.01%	-29.6%
7	ADAGE CAPITAL PARTNERS GP, L.L.C.	$48.94M	524,602	0.08%	-22.2%
8	CITADEL ADVISORS LLC	$23.78M	254,948	0.02%	-68.7%
9	MILLENNIUM MANAGEMENT LLC	$19.28M	206,653	0.01%	-33.7%
10	AQR CAPITAL MANAGEMENT LLC	$11.86M	127,144	0.01%	+135.7%

Congress Trading

6 members · 11 disclosed trades in RIO

Member	Type	Amount	Date
Alan Armstrong	Buy	$15,001 - $50,000	Mar 30, 2026
Lisa McClain	Sell	$1,001 - $15,000	Oct 31, 2025
Lisa McClain	Buy	$1,001 - $15,000	Oct 30, 2025
Lisa McClain	Sell	$1,001 - $15,000

Frequently Asked Questions

Which institutional investors own the most RIO stock?

As of the latest SEC 13F filings, Fisher Asset Management, LLC is the largest institutional holder of RIO with a position worth $1.88B, representing 0.64% of their portfolio. In total, 14 institutional investors hold RIO with a combined value of $2.73B.

What percentage of RIO is owned by institutional investors?

Institutional investors hold $2.73B worth of RIO stock across 14 positions. The largest institutional holder is Fisher Asset Management, LLC with $1.88B in holdings.

What is a 13F filing and why does it matter for RIO?

A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For RIO, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.

Track RIO institutional moves

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