StubHub gains after Citigroup upgrades to 'buy'

** Ticketing marketplace StubHub STUB.N shares gain 4.5% to $6.21 in premarket trading

** Citigroup upgrades rating on stock to "buy" from "neutral"; cuts PT to $7 from $9

** Says some investors are skeptical of co's raised EBITDA forecast, "given the World Cup tailwind in 1H26," but "based on robust app downloads in 3Q26, we believe co will report 3Q26 Adj. EBITDA above expectations, allowing the firm to deliver FY26 Adj. EBITDA near the high end of the firm’s guidance," says Citigroup

** Earlier this month, co raised its adjusted EBITDA forecast for 2026 to $420 million, below analysts' expectation of $457.34 million - data compiled by LSEG

** Up to last close, shares down 56.1% YTD