Market expert Gurmeet Chadha has cautioned against the systemic risks posed by unverified 'source-based news,' particularly on market expiry days. He highlighted recent false reports concerning Russian oil shipments and Chinese contractors, stating that such disinformation can amplify volatility and lead to chaotic trading. Chadha suggested that these rumors, often spread by global social media accounts citing unnamed sources, contribute to market instability and called for remedies to tackle disinformation.