By Amanda Morrall

A colleague told me yesterday's column was too heavy so it's all business today folks.

1) Irrational exuberance?

Shareholders yesterday were warned to pull in their heads, or at least curb their enthusiasm amid signs of an overheating stock market. The warning, delivered by Tower Investments at its first media briefing for 2013, was on the basis of that flagging interest in fixed-interest (dogged by a lower for longer interest rate environment) was artificially driving up share prices in turn compounded by an ensuing herd effect.

CEO Sam Stubbs told reporters that investors needed to be cautious not to confuse high prices for higher quality offerings. For that reason, Stubbs said Tower had begun increasing its exposure to the Australian sharemarket.

For more on the news briefing, see this report from Radio NZ.

2) How to value shares

So what are the metrics for judging whether share prices are overvalued? Two standard measurements are absolute valuations and relative valuations. Here's an excellent piece explaining the process at length from the U.K. investment blogger Monevator.

3) NZ Superannuation

Whether the NZ Super fund is growing on the back of an ever expanding bubble is debatable. Last year's returns (close to 20%) are undeniably juicy by anyone's count. In the 12 months to Dec.31, 2012, the NZ$20 billion pension fund returned 19.17%. The fund's allocation of New Zealand equities is 5% of total assets. Other New Zealand assets include holdings in forests, farmland, commercial property and private companies.

A complete report on the NZSF performance can be viewed here. Page eight has a complete break down of asset allocation.

See also this report from TVNZ for more highlights.

4) Best money books

Looking to build your personal finance library? Here's the top picks as chosen by financial bloggers from around the globe. My own contribution is expected to hit the bookshelf at the end of this month.

5) Low impact jobs?

A regular reader with a passion for conservation and the environment sent me the following blog contemplating a range of interesting and thorny issues including the residual carbon foot printing of goodwill work. The argument being that people in a position to donate money or time to good causes did so on the back on jobs that mainly extracted a high price from Mother Earth. Interesting food for thought and well written. Enjoy.

To read other Take Fives by Amanda Morrall click here. You can also follow Amanda on Twitter @amandamorrall or at www.amandamorrall.com