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TORONTO — Volatile share prices of Canada’s publicly traded marijuana companies triggered numerous circuit-breaking halts in trading Wednesday as buzz surrounding the nascent sector pushed valuations to record intraday highs.

Aphria Inc., Mettrum Health Corp., Organigram Holdings Inc., Supreme Pharmaceuticals Inc., Aurora Cannabis Inc. and Canopy Growth Corp. were all halted for five-minute intervals Wednesday—some of them multiple times.

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The Investment Industry Regulatory Organization of Canada said the halts were triggered by single stock circuit breakers “due to volatility in the stock prices.” It did not comment further.

Circuit breaks are tripped when a stock climbs or falls at least 10 per cent in a five-minute period, which appears to have been the case with the six marijuana stocks Wednesday.

The halts seem to have put the brakes on for overly enthusiastic investors as five of the six stocks closed lower. Many were halted again after seeing a similar tumble on their way down.