There are some restricition if one works as fund manager or this particular field, if not mistaken, just like remisers can't open own or his spouse account with the investment bank they are working with etc.
Husband and wife is treated same entity most of the time, depended on the rules and regulation set respectively.

Relevant authority is not stupid either, they will investigate the timing of it. Even if one escape with the breach of the law with black and white (just like you mentioned, use relatives account to trade) but the company surely raise the suspectibilty on it which won't be good for your career. Fund managers already can gain extra from the profit (in term of performance bonuses) they made in the stock market through fund investment, then still greedy want to make more personally?

Again, just like said before, you don't risk your whole career just to gain some out of it (which also no guarantee as explained as below). Trust is important is this aspect, same with doing business, once one loses the creditability of the trust, then your whole career in this field (even in businesses) basically spoilt. No matter how good you are, nobody will dare to hire you nor doing business with you (in term of businesses).

Creditability of trust built over time, but can be spoilt overnight.

Also, just to point out, even if you are the fund manager and your fund has decided to buy a particular stock, there is no guarantee the stock will go up either. A single fund manager can't push up the stock alone even for like of EPF, even they buy aggressive in the market, but if market sentiment and market force is against it, they are powerless to drive up the stock price alone. A few tick may be, but sustainability of the share price depends on general market force, not a single or 2 investors (even though they are huge).

For equities or stock market, it is not a zero sum game, when stock rise, everyone is a winner/gainer, there is no losser, but when stock drop, everyone is a loser except those short-sell one.

For futures market, like index futures, oil futures, yes, it is a zero sum game. A gain come from other people loss.

haha i agree on u jordy

btw .. how can i sharpen my knowledge in investing? eg. what megazines should i read into .. personal money?