Marshall Wace
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Marshall Wace’s Rio Tinto RIO Stock Holding History

Marshall Wace’s Portfolio RIO Stock Details RIO Fund Activity
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

Fisher Asset Management
Fisher Asset Management Camas, Washington $295B AUM 31.6% 1-Year Est. Return
State Farm Mutual Automobile Insurance
State Farm Mutual Automobile Insurance Bloomington, Illinois $127B AUM 32.55% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Mirae Asset Global ETFs Holdings
Mirae Asset Global ETFs Holdings Causeway Bay, Hong Kong $73.7B AUM 53.56% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $131B AUM 28.36% 1-Year Est. Return
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT) London, United Kingdom $89.9B AUM 20.22% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Marshall Wace's RIO Position: Q1 2026 in Review

Marshall Wace increased its Rio Tinto (RIO) stake by 394% in Q1 2026, buying an estimated $8.29M and bringing the position to 114,028 shares worth $10.6M. The position accounts for 0.01% of the portfolio, ranked #950.

Marshall Wace first reported a position in RIO in Q1 2016 and has held it in 27 quarters since. The position peaked at $72.2M in Q1 2022. 932 funds tracked by Wall St. Rank hold RIO as of Q1 2026.

  • Marshall Wace held 114,028 shares of Rio Tinto worth $10.6M as of Q1 2026.
  • Marshall Wace bought 90,924 Rio Tinto shares in Q1 2026, an estimated $8.29M.
  • Rio Tinto made up 0.01% of Marshall Wace's portfolio in Q1 2026, its #950 holding.
  • Marshall Wace first reported a position in Rio Tinto in Q1 2016 and has held it in 27 quarters since.
  • Marshall Wace's Rio Tinto position peaked at $72.2M in Q1 2022.
  • 932 funds tracked by Wall St. Rank held Rio Tinto as of Q1 2026.

Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.