This was on another thread yesterday. point 2 Ties in with the title of this tread
Reason 1: Bank has some arbitrary limit. It only wants to lend $50m against AIO ( for example ). Once the outstandng loans against AIO reach this level, then no more lending. This could actually be a good sign if it means big, smart, margin loan investors have been acquiring the stock ( assuming there is any such thing as a smart margin loan investor in 2008 )
Reason 2: Some insto customer/crony of the bank is seeking to acquire a large stake in AIO, the banks assist this by cutting margin lending to force margin loan customer shareholders to sell out
AIO Price at posting:
98.1¢ Sentiment: LT Buy Disclosure: Held