RingCentral's valuation looks difficult to justify given its modest growth and stock compensation. Its $240 million in SBC is roughly 40% of the cash flow it promotes; the implied opening price is about 22-23x cash flow and 85x GAAP earnings as growth moves only from 5.5% to 6%. AI ARR has had only a marginal impact on the overall business, while earlier profitability gains came from cutting bloated costs. x.comÂ