If you're interested in broad exposure to the Mid Cap Blend segment of the US equity market, look no further than the Invesco S&P MidCap 400 GARP ETF (GRPM) , a passively managed exchange traded fund launched on 12/03/2010.The fund is sponsored by Invesco. It has amassed assets over $471.95 million, making it one of the average sized ETFs attempting to match the Mid Cap Blend segment of the US equity market.Why Mid Cap BlendMid cap companies, with market capitalization in the range of $2 billion and $10 bil ...