PrefInvestor wrote:
I believe that my approach of applying limits to my investments has been useful to me in two ways:-
a) The lower limit of about £3,000 is driven by what I consider to be the minimum cost effective trading volume. I would never want to buy fewer shares than that due to the effects of stamp duty and commission. It also seems a sensible first step in building a larger position, allowing time to get experience with a stock before further adding to that position.
Is there a reason that you include stamp-duty in that consideration, given that the 0.5% stamp duty is payable on any amount of invested-capital at all?
There doesn't seem to be a proportionate advantage with any stamp duty costs as there clearly are with fixed trading commission.
I have a lower limit too, but it's much lower than £3000. If you're able to take advantage of any 'Regular Trading' schemes that your broker allows, then you can keep trading costs at a really low level - often just a couple of quid. If I can keep trading costs under 1% then I'm usually happy to invest, and that's certainly the case with a lower level than £3000 for me.
Some of the cheap 'Regular Trading' schemes look like they require multiple and regular investments, but I've always found that I can allocate a share for one of the cheap-trading days and then just cancel the entry after the trade has gone through. This is certainly the case for all three of the brokers that I use, so it might be something worth investigating if trading costs are important to you for lower-level investments.
PrefInvestor wrote:
b) My limits are also driven by my personal approach to loss management, where I review the situation should I get to be 10% down (including all dividends received) and may decide to either sell, average down, or sometimes just hold. This process is designed to stop a 10% loss becoming a 20% loss, and then a 50% loss etc. and then becoming trapped in the stock just waiting and hoping for a recovery. In this way I hope to keep the cost to me of a failed stock pick to not much more than a few hundred pounds.
Do you run a comparison of a potential 10% share loss against general market weakness? I only ask because I imagine there are times when large numbers of portfolio-holdings might drift lower along with market turbulence, and I wondered if you've got any controls in place to highlight such events to you, or would that simply be part of your 'sometimes I just hold', where you'd consider general market issues at that point, and take that into account?
Cheers,
Itsallaguess