Gainers

Ostin Technology Group (NASDAQ:OST) shares rose 39.7% to $4.22 during Tuesday's regular session. As of 13:30 EST, this security is trading at a volume of 44.5 million shares, making up 657.4% of its average full-day volume over the last 100 days. The company's market cap stands at $56.9 million. Western Digital (NASDAQ:WDC) stock rose 15.48% to $62.27. Trading volume for Western Digital's stock is 16.2 million as of 13:30 EST. This is 436.7% of its average full-day volume over the last 100 days. The company's market cap stands at $19.4 billion. As per the news, the Q3 earnings report came out 3 days ago. Harmonic (NASDAQ:HLIT...