H.C. Wainwright upgraded NioCorp Developments Ltd. (NASDAQ:NB) to a "Buy" rating and increased the price target from $4 to $8.25.The stock has experienced significant volatility, with a yearly low of $1.27 and a high of $6.46.NioCorp's market capitalization is approximately $455.9 million, with a trading volume of 9,955,781 shares, indicating strong investor interest.NioCorp Developments Ltd. (NASDAQ:NB) is a key player in the U.S. critical minerals sector, focusing on developing resources essential for var ...