Upgrade sparks violent rally
A broker upgrade to buy on growth prospects is driving sharp upward price action, amplified by thin volume and general biotech sector momentum.
Sources: https://stockstory.org/us/stocks/nasdaq/amgn, https://uk.investing.com/news/stock-market-news/4658790, https://www.stocktitan.net/sec-filings/AMGN/form-4-amgen-inc-insider-trading-activity-1dada8f29083.html
Previous verdicts for AMGN
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