Quote from Ghost of Cutten:
Here is where I disagree:
" The great traders start small, wait for premium situations to develop, and then "vary their size massively" as a favorable scenario unfolds and the market tips its hand."
Not necessarily - that assumes that moves are always uncertain or have marginal odds at the start, and then become more favourable later on. In fact it can be the other way - the best R/R and win-rate can happen at the start, and then degrade as the move takes place. A good example is buying a market crash once its in the exhaustion or early rebound phase (i.e. extreme mean reversion trade), or making a deep value investment during a period of dire news, high uncertainty and bearish sentiment. The further things went in your favour, the more good news and price action, then the more obvious the trade is, so the higher the price, the lower your remaining profit potential, the less value remaining in your trade.
Yes, this is a fair point. Sometimes it is wholly appropriate to "back up the truck" in respect to deep value investments.
I find it interesting to consider the "why" of such opportunities, as in "why do such opportunities exist."
While many trades exploit relative uncertainty, deep value trades in post-crash situations arguably exploit something else -- outlier dislocations due to lack of cash or lack of staying power.
Forced selling no doubt creates opportunities. Being able to buy high quality "cash boxes" at 3x earnings with larger cash positions than market cap in Q109, due to the biggest tsunami of non-fundamentals-based forced selling the market had ever seen, was a nice example of that.
Under these conditions I agree w/ the Buffett perspective that "volatility is not risk" as described through the classic Washington Post example.
I would classify this more as value investing technique than trading technique, but then again, opportunity is opportunity. Your point stands that sometimes it does make sense to "go big" from the start, though I would caveat that by saying, for my style at least, this class of opportunity happens fairly infrequently.
(Adding as a final point that, for traders who use leverage, going big can mean VERY big. It is no big deal for us to put 10-15% of capital into an equity trade, on a regular basis, given that the relative planned risk is still quite small, e.g. 1% or less.)
Cheers