Only ~0.2% of outstanding BTC are traded on any given day...only 1% per week.
This is much less turnover (~6x less) than many sleepy, established corporate shares whose stock is mostly trapped in institutional funds.
My point being it seems a large share of BTC's are not frequently traded, they are being mostly held, except for a very shallow set of bitcoiners.
This, coupled with the fact that bitcoin has no "fundamentals" in any sense of the word as it applies to currencies or corporate shares (i.e. no book-value, no established trade-for-goods base, no inherent physical usage outside of trade, no backing, no market stabilization entity), points to the activity of predicting future pricing literally impossible.
You're essentially left with divining on the reactionary psychology of a shallow subset of folks that will happen to be trading BTC for fiat out in future. How much "float" of fiat currency will folks wish to trade in/out of BTC vs. the "float" of BTC's current holders are willing to make available to the market?
Another quite unique aspect of Bitcoin pricing, which is purely speculative on my part, but becoming more obvious (at least to me) over the last few months, is the
stiction of BTC pricing. After a big movement in price, up or down, caused or accompanied by large trade volume, the pricing "sticks" to a narrow pricing band for several days or weeks until another wave of high-vol trading occurs and resets the price elsewhere. This may just be another consequence of the current shallowness of the bitcoin market, that may go away with higher transactional adoption...or it may stay if the drivers of additional transactions choose to store in fiat instead of holding BTC. Given the expected relative ease and low future cost of transacting into/out-of BTC, this may not go away.
Head over to CoinLab for nice charts on current bitcoin liquidity. See how the Winkledudes can cause the BTC price drop -$20 by liquidating just 10% of their BTC holdings.
http://coinlab.com/liquidity