Lumentum's valuation echoes JDS Uniphase, half of which became Lumentum, because both rest on distant buildout expectations that may not materialize. If Lumentum hits estimates two years out and earnings then plateau, the valuation would be insane; only later years justify it, and JDSU also had rational forward multiples in the out years. @KairosPraxis counters that Lumentum has good contract visibility for two years, unlike JDSU's $100B value on $1B of revenue. x.com x.com x.comÂ