It's pretty hard to keep things balanced in a volatile stock market..with daily gyrations of 0.5 - 1%. As I write this I can see that our portfolio's target vs actual are as follows:
US equities target of 40% is actually 40.67%
CAD equities target of 25% is actually 24.87%
International target of 15% is actually 18.53%
Reits target of 8% are actually 5.96%
Bonds (short term) target of 2.5% are actually 1.89%
Bonds (high yield) target of 9.5% are actually 8.1%
So, next week on payday I will send ~$3000 into the most underperforming area - (as of today that would be REITS). However, by next week...with the shutdown/debt ceiling...who knows?
Basically I add to our 'stache every 2 weeks (payday). The amount may vary and I may buy more than one equity class. When adopting this strategy, you tend to smooth out your ACB...and always buy low (in a relative sense). Also, with frequent additions, you may want to consider a discount brokerage that has NO FEES for buying. In our case, we buy ETF's at no cost with Questrade (Canada).