Looking for broad exposure to the Large Cap Blend segment of the US equity market? You should consider the State Street SPDR Portfolio S&P 500 ETF (SPYM) , a passively managed exchange traded fund launched on November 8, 2005.The fund is sponsored by State Street Investment Management. It has amassed assets over $96.06 billion, making it one of the largest ETFs attempting to match the Large Cap Blend segment of the US equity market.Why Large Cap BlendLarge cap companies typically have a market capitalizatio ...