Ownership history in MARSHALL WACE, LLP Β· 4 quarters on record
This page tracks every 13F SEC filing in which MARSHALL WACE, LLP reported a position in ERO COPPER CORP (ERO). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price β sourced directly from SEC EDGAR 13F filings.
π MARSHALL WACE, LLP outperformed the S&P 500 by +45.8% annually on this ERO position. Timing score: 33% (1/3 decisions correct). Average cost basis: $16.56. Maximum drawdown during holding period: β10.1%.
π₯ Exceptional β beat the S&P 500 by 45.8% per year on this position.
3 quarters analyzed
β οΈ Poor timing β buys often preceded drops, trims preceded rallies.
1 of 3 add/trim decisions correct
Best entry: $13.48 (2024 Q4) Β· Worst: $16.85 (2025 Q2)
π No drawdown exceeding 20% during the holding period β exceptionally stable.
2 adds Β· 2 trims. Bought during 0 of 1 down-price quarters. π More buys than sells across the holding period.
βοΈ Portfolio weight has remained relatively stable β conviction maintained.
Currently 0.01% of portfolio
β Based on quarterly 13F SEC filings and end-of-quarter closing prices. Timing score = accuracy of add/trim decisions vs next-quarter price direction. Alpha = mean quarterly excess return Γ 4 (annualised). Not investment advice.
As of 2025 Q4 β sorted by position size