The Vetr crowd downgraded their rating for Spark Therapeutics Inc (NASDAQ: ONCE) on Thursday, from 4.5 stars (Strong Buy), issued 519 days ago, to 4 stars (Buy). Crowd sentiment for Spark is primarily positive, with 80 percent of Vetr user rating bullish.

The genetic research company gained traction when it announced it would be receiving $15 million from Pfizer Inc. (NYSE: PFE) after completing a successful safety and efficacy profile of a potential hemophilia therapy.

Responding to this news, share price in the stock shot up nearly $10 to peak just shy of the $60 mark. Spark ended the January 5 trading day a little lower at $58.68.

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Currently, the Vetr crowd's average target price for Spark Therapeutics is up at $62.50, which is higher than the average analyst target price of $59.68. Less than 2 percent of Vetr users are holding ONCE in their watch lists.

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