Rio Tinto
RIO
878 hedge funds and large institutions have $10.3B invested in Rio Tinto in 2025 Q4 according to their latest regulatory filings, with 182 funds opening new positions, 345 increasing their positions, 202 reducing their positions, and 56 closing their positions.
225% more first-time investments, than exits
New positions opened: 182 | Existing positions closed: 56
71% more repeat investments, than reductions
Existing positions increased: 345 | Existing positions reduced: 202
27% more capital invested
Capital invested by funds: $8.15B → $10.3B (+$2.19B)
14% more funds holding
Funds holding: 767 → 878 (+111)
14% more call options, than puts
Call options by funds: $657M | Put options by funds: $578M
0.45% more ownership
Funds ownership: 9.85% → 10.3% (+0.45%)
31% less funds holding in top 10
Funds holding in top 10: 13 → 9 (-4)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Mirae Asset Global ETFs Holdings
Causeway Bay,
Hong Kong
|
+$289M |
| 2 |
Arrowstreet Capital
Boston,
Massachusetts
|
+$176M |
| 3 |
Deutsche Bank
Frankfurt Am Main Ge,
Germany
|
+$80.8M |
| 4 |
Natixis Advisors
Boston,
Massachusetts
|
+$67.6M |
| 5 |
1832 Asset Management
Toronto,
Ontario, Canada
|
+$44.7M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
JP Morgan Chase
New York
|
-$168M |
| 2 |
JAG
Journey Advisory Group
Covington,
Kentucky
|
-$162M |
| 3 |
Renaissance Technologies
New York
|
-$73.7M |
| 4 |
D.E. Shaw & Co
New York
|
-$72.5M |
| 5 |
Millennium Management
New York
|
-$63.1M |
RIO Hedge Fund Activity: Q4 2025 in Review
878 of the 8,265 institutional investors tracked by Wall St. Rank reported a position in Rio Tinto (RIO) for Q4 2025, worth a combined $10.3B — up 27% from $8.15B a quarter earlier.
Buyers outnumbered sellers: 182 funds opened new RIO positions and 56 closed out — a net gain of 126 holders — while 345 added to existing stakes and 202 trimmed.
The largest buyer was Mirae Asset Global ETFs Holdings, adding an estimated $289M. The largest seller was JP Morgan Chase, cutting an estimated $168M.
- 878 institutional investors held Rio Tinto (RIO) as of Q4 2025, up from 767 in Q3 2025.
- Funds reported $10.3B of Rio Tinto stock for Q4 2025, up 27% quarter-over-quarter.
- 182 funds opened new Rio Tinto positions in Q4 2025 and 56 closed out, a net change of +126 holders.
- The largest Rio Tinto buyer in Q4 2025 was Mirae Asset Global ETFs Holdings, an estimated $289M added.
- The largest Rio Tinto seller in Q4 2025 was JP Morgan Chase, an estimated $168M sold.
Based on aggregated 13F filings for Q4 2025.