If you are wondering whether Lumentum Holdings at around US$938 is priced attractively or already stretched, the key is to look closely at what the current valuation actually reflects. The stock has been very strong over the longer term, with a year to date return of 142.9% and a 7 day move of 4.0%, even though it is down 3.9% over the past month. Recent coverage has focused on the scale of Lumentum Holdings' very large 1 year and 3 year returns, which sit at more than 10x and more than 17x...