• Quartz, Wednesday, December 23, 2015 8 AM

As U.S. health officials said they were investigating a new wave of E. coli cases linked to Chipotle’s restaurants, the company's stock fell 3.5%. But on Tuesday morning, a JPMorgan analyst downgraded Chipotle’s stock to neutral from overweight, and slashed its price target to $555 from $630, citing the newest health investigation as cause for uneasiness. “At this point, even rational and informed consumers could potentially be given reason to pause when choosing Chipotle over the plethora of fast casual competition in the marketplace,” JPMorgan’s analyst wrote in a note.

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