The SPYM ETF has experienced significant growth, doubling its assets to $157 billion over the past 12 months. This surge is attributed to a strategic makeover, including a new index, ticker, and reduced fees. SPYM has also secured a major distribution agreement, becoming the default ETF in Trump Accounts, which is expected to generate an estimated $12 billion annually in new flows. While SPYM's recent success positions it as a strong contender in the ETF market, surpassing VOO in flows remains uncertain. However, it is anticipated to become a leading ETF, potentially ranking as the second or third largest in the future. The ETF's growing popularity suggests it could eventually rival SPY in size.