Investors have been gambling on Wynn Resorts (NasdaqGS: WYNN) shares ahead of the casino and resort operator’s quarterly earnings Tuesday, and the stock’s rally has lifted a gaming exchange traded fund (ETF).

Market Vectors Gaming ETF (NYSEArca: BJK) counts Wynn as its second-largest holding at nearly 9% of assets.

Wells Fargo analysts said they expect Wynn to report gross gambling revenue in Macau up nearly 32% compared with the first quarter last year, Forbes reported.

Wynn shares jumped 20.6% for the month ended April 18, according to Morningstar. Market Vectors Gaming ETF was up 11.1% over the same period.