Oprah Winfrey's original five-year partnership with WW was set to expire in October 2020, so today's extension through 2025 represents a substantial expansion of the partnership, Craig-Hallum analyst Alex Fuhrman tells investors in a research note. The analyst's conversations with investors indicated that the 2020 expiration of Oprah's partnership had been viewed as a key risk factor for the stock. As such, today's news removes a "significant overhang," contends Fuhrman. And while the creation of a 10b5-1 trading plan signals an intention to sell WW shares, it also reduces the risk of a negative shock in the future as Oprah sells stock over time for diversification and charitable giving, adds the analyst. Fuhrman reiterates a Buy rating on WW shares with a $50 price target.