Rio Tinto Shares Plunge 2.9% as Carbon Credit Skepticism and Adage Capital’s 86.4% Stake Cut Drive 154.75% Surge in $310M Volume to 330th Most Active Stock

Rio Tinto (RIO) closed at $61.945 on Sept. 9, 2025, , . The stock ranked 330th in market activity. The decline came amid a carbon credit partnership with CEFC and La Caisse that drew skepticism over environmental credibility, alongside a massive stake reduction by Adage Capital, .

The carbon credit initiative, managed by Gunn Agri Partners, faces criticism for lacking verifiable "additionality" and long-term environmental impact. Meanwhile, . These factors, combined with sector-wide volatility linked to , intensified selling pressure. Technical indicators show a bearish bias, with at overbought levels and MACD signaling divergence, suggesting potential for further downside.

Backtest analysis of RIO's performance following intraday drops of 3% or more from 2022 to 2025 reveals a pattern of rebounds. On average, , . Statistical significance turned positive from day five onward, indicating potential for a rebound if key support levels hold.