Quarterly earnings don't often change a company's investment thesis, but sometimes they are enough to convince some investors of what others already saw. Recently, Teladoc Health (NYSE: TDOC) and (NASDAQ: ROKU) reported second-quarter results that sent their shares soaring, but in both cases, there were solid arguments for buying the stocks before these latest updates.

In fact, these arguments remain intact for both Teladoc and Roku. Let's find out why these companies are worth investing in today.

Like other telemedicine specialists, Teladoc saw its shares soar along with its financial results in the early days of the pandemic. Patients switched to telehealth for medical needs, such as basic prescriptions, consultations, and referrals. But Teladoc's business started slowing once things were getting back to normal. That, added to the massive net losses it incurred last year, sent Teladoc's shares down the drain.

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Source Fool.com