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{"created_at":"2026-04-20T18:44:57.233 {"created_at":"2026-04-20T18:44:57.233742+00:00","signal_type":"discovery_unusual_volume_delta","source":"discovery_ingestor","url":"https://www.nasdaq.com/articles/mp-materials-vs-usa-rare-earth-whats-better-long-term-play","value":{"fp":"6b890964945f348b","kind":"unusual_volume","published_at":"2026-04-20T17:20:00+00:00","source":"Nasdaq Markets","summary":"Key PointsMP Materials owns and operates the only rare earth mine in the U.S.","tickers":[],"title":"MP Materials vs. USA Rare Earth: What's the Better Long-Term Play?","url":"https://www.nasdaq.com/articles/mp-materials-vs-usa-rare-earth-whats-better-long-term-play"}}... |