Marshall Wace’s Rio Tinto RIO Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2016
Q3
Sell
-750,000
Closed -$24.3M 1103
2016
Q2
$24.3M Buy
+750,000
New +$22.4M 0.2% 122

Other funds holding RIO

Marshall Wace's RIO Position: Q2 2026 in Review

Marshall Wace reduced its Rio Tinto (RIO) stake by 94% in Q2 2026, selling an estimated $10.8M and leaving 7,346 shares worth $697K. The position accounts for ﹤0.01% of the portfolio, ranked #2370.

Marshall Wace first reported a position in RIO in Q1 2016 and has held it in 28 quarters since. The position peaked at $72.2M in Q1 2022. 966 funds tracked by Wall St. Rank hold RIO as of Q2 2026.

  • Marshall Wace held 7,346 shares of Rio Tinto worth $697K as of Q2 2026.
  • Marshall Wace sold 106,682 Rio Tinto shares in Q2 2026, an estimated $10.8M.
  • Rio Tinto made up ﹤0.01% of Marshall Wace's portfolio in Q2 2026, its #2370 holding.
  • Marshall Wace first reported a position in Rio Tinto in Q1 2016 and has held it in 28 quarters since.
  • Marshall Wace's Rio Tinto position peaked at $72.2M in Q1 2022.
  • 966 funds tracked by Wall St. Rank held Rio Tinto as of Q2 2026.

Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.