Stocks in news: Oswal Pumps, Nestle India, Angel One, Natco Pharma, Ethos

Markets remained mostly flat on the weekly expiry day amidst mixed signals. Several companies saw significant activity, including Oswal Pumps debuting on the exchanges and Nestle India considering a bonus share issue. Block deals impacted Ethos, while Sai Life Sciences may see a stake sale. Natco Pharma received a US FDA Form 483.