Marsh & McLennan's 195th Volume Rank Highlights Struggles Amid Market Selloff and Failing RSI Strategies

Marsh & McLennan (MMC) closed 0.80% lower on October 13, 2025, with a trading volume of $550 million, ranking 195th among listed stocks. The decline occurred amid a broader market selloff, though the firm’s exposure to insurance risk management services and recent earnings reports did not trigger immediate sector-specific volatility. Analysts noted limited catalysts for short-term momentum shifts in the property and casualty insurance sector during the reporting period.

Technical analysis of MMC’s price action revealed challenges for traders relying on overbought/oversold indicators. A one-day-hold strategy triggered by RSI levels below 30 failed to produce consistent returns since 2022. The strategy’s limitations were compounded by rapid downward gaps following initial rebounds, leaving cumulative gains negative despite brief recoveries. High volatility relative to average gains further eroded potential profitability.

Key structural issues included the absence of risk controls to manage intraday slippage during sharp sell-offs and a low-frequency trigger rate (under 24 opportunities since 2022). Momentum continuation dominated post-sell-off scenarios, with downward trends often persisting beyond single sessions. Proposals to refine the approach include filtering trades to align with rising 200-day moving averages, implementing tiered profit-taking rules, and diversifying signals across high-beta semiconductor stocks to reduce concentration risk.

The RSI-based oversold one-day-hold tactic on NVDA failed to add value over 2022-present. In practice, the brief oversold rebounds were too weak—and the intermittent large gaps down the following day overwhelmed the few positive rebounds—so the cumulative P/L stayed negative and volatility remained high relative to the shallow average gains.