ProPhase Labs, Inc. (PRPH) shares rallied 8% in the last trading session to close at $9.68. This move can be attributable to notable volume with a higher number of shares being traded than in a typical session. This compares to the stock's 23.6% loss over the past four weeks.Shares of the company were high driven by optimism around growth for the drug/biotech sector in the ongoing year.This company is expected to post quarterly earnings of $0.12 per share in its upcoming report, which represents a year-over-year change of +233.3%. Revenues are expected to be $22.65 million, up 147.8% from the year-ago quarter.Earnings and revenue growth expectations certainly give a good sense of the potential strength in a stock, but empirical research shows that trends in earnings estimate revisions are strongly correlated with near-term stock price movements.For ProPhase Labs, Inc., the consensus EPS estimate for the quarter has remained unchanged over the last 30 days. And a stock's price usually doesn't keep moving higher in the absence of any trend in earnings estimate revisions. So, make sure to keep an eye on PRPH going forward to see if this recent jump can turn into more strength down the road.The stock currently carries a Zacks Rank #2 (Buy). You can see the complete list of today's Zacks Rank #1 (Strong Buy) stocks here >>>>ProPhase Labs, Inc. is a member of the Zacks Medical - Drugs industry. One other stock in the same industry, Harpoon Therapeutics, Inc. (HARP), finished the last trading session 9.2% lower at $2.18. HARP has returned 15.4% over the past month.For Harpoon Therapeutics, Inc., the consensus EPS estimate for the upcoming report has remained unchanged over the past month at -$0.55. This represents a change of -5.8% from what the company reported a year ago. Harpoon Therapeutics, Inc. currently has a Zacks Rank of #3 (Hold). This Little-Known Semiconductor Stock Could Lead to Big Gains for Your Portfolio The significance of semiconductors can't be overstated. Your smartphone couldn't function without it. Your personal computer would crash in minutes. Digital cameras, washing machines, refrigerators, ovens. You wouldn't be able to use any of them without semiconductors. Disruptions in the supply chain have given semiconductors tremendous pricing power. That's why they present such a tremendous opportunity for investors. And today, in a new free report, Zacks' leading stock strategist is revealing the one semiconductor stock that stands to gain the most. It's yours free and with no obligation. >>Give me access to my free special report.Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report ProPhase Labs, Inc. (PRPH): Free Stock Analysis Report Harpoon Therapeutics, Inc. (HARP): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research