There are many different motives for some of the trades you see on the market.
I highly suspect (although I have no proof) that the purchase at 14 was not exactly an arms length transaction. It most likely involved moving shares from Account A to Account B.
One could ask why do that. I can think of a number of reasons:
1. An agent/broker doing it for the commission.
2. Someone trying to prevent the price from falling below a certain threshold.
3. An agent/broker dumping the share to another client, on the pretext that is the only way he could get a "block" deal of that nature.
In case of 2 above, the commission would not be a particularly big worry. Besides, many of you will know that it is possible to negotiate brokers commissions to very low levels if you are a frequent trader. If it were a broker doing it for his/her own account(s), then the brokers commission could even be zero, with only statutory NSE/CDSC/CMA etc levies to reckon with - about 0.3% ONLY.
In such a scenario, a price drop even back to 12 will not worry such a fella. S/He will simply come back to the market and place supply of 100,000+ at 13.50 another day. Since no one will supply it, s/he will gladly do it himself. Perfectly legal although tantamount to market manipulation.
HII SHARE IKO NA WENYEWE!
You stick around long enough in the market and you get to learn a few things.
As for me, I keep on hoping for sub 11 and I will be adding.