thanks with regard to your second point. If currently mine is a monthly deposit arrangement, and the portfolio value drop when I routinely check one day , I should put more money in even before my monthly cycle ?
Also what’s is a larger than usual margin ? Any ballpark figures ?
Daily fluctuations up to 1% quite normal, especially in this volatile period. Try to look for periods where you see portfolio value keep dropping ~1% every day over 4-5 consecutive days (ideally). You'll never know if they continue dropping, or starting to recover, since any deposits made will take a minimum of 1 business day for the buy order to go through, but at least you can gain a bit since if drop 2% every day over 4 days,
very unlikely will be insta gain of 10%+ the very next day (when you decided to pump in extra). Usually recovery also quite gradual, but at least if drop more than 8% in a week, when you go in, even if it's up by 1-2%, you still got chance to earn that 6-8% needed to get back to original price.
So tl;dr, if you have 10k portfolio value with current 1k in returns, if your returns slowly start dropping to like ~6-700 over a couple of days, you can consider pumping in extra, but don't pump in one time. Split up whatever you're willing to pump in, into like 2-3 sums, cause you never know if things are gonna continue to drop or not. If you pump in, but then you notice things start dropping, then at least if you split that amount into 2-3 portions, you got more chance to gain some more.
This is just a rough idea of what you should do ah. Alternatively, you can just do weekly deposits into Stashaway via standing instruction. That way, you can help offset some of the current volatility, since no extra fees for multiple deposits every month, so might as well take advantage of that.