basic instincts tells me that u cant do without both unless u dont mind losing or u r just plainly lucky..
u have to diversify then focus on the diversified portfolio.. the same way plants do well in different seasons,some thrive in rainy days others do so in scotching sun..

Its just me
whatever choice you make in life make sure that you can live with it.

Wow! Look what I've dug up from the archives. Today is the last day of the year and it's fair to say:

-Warren Buffet said wide diversification is only required when investors do not understand what they are doing

-If @Jammo invested exclusively in Equity, Access, NIC on 06-Aug-09 he would have lost moneeeyyy about 17%, 14%, 15% respectively

-@Cowpoke right on the money with the Safaricom Call. In fact top gainers were WTK, KQ, SCOM.

I know it's easy to be a genius/critic looking back.
Invest wisely in 2010, and remember the race is not to the swift, nor the battle to the strong, neither yet bread to the wise, nor yet riches to men of understanding, nor yet favor to men of skill; but time and chance happens to them all.

So;
Does anyone know what became of jammo?

The key is "investment criteria" rather than diversification.

Warren Buffet and other master investors have clear investment criteria and only invest in stocks that meet their criteria.

To quote WB “Diversification is a protection against ignorance. It makes very little sense for those who know what they're doing”

@sparkly - Even a diversified investor can't always sleep... Look at NSE in 2009 where some focused investments did far better than the general market.

@omega quoted WB “Diversification is a protection against ignorance. It makes very little sense for those who know what they're doing”