Quote from Nagelis:
Buying futures on the Standard & Poorâs 500 Index, just as the trading session ends and selling them when the market opens the next day has yielded 309 percent since 1993,

Quote from Nagelis:
3. They just discovered closing the gap...
Quote from Pekelo:
Actually not. They just discovered MAKING the gap....
Basicly they are saying that there are more and bigger upgaps than downgaps, which is not surprizing considering the overall bullish nature of the market over decades...