Lending rates for Clam at poloniex currently around
0.8% daily..

Plus a single whale (not even a big one!) in this tiny market pairing, can instantly drop the value of Clams by 70% (like occurred the other day), or by
any amount.
When they are ready, and all their ducks are in a row (as the saying goes). When their Lending profit peaks out. When their mega-Shorts are ready to trigger.
The recent chart should be a clear indication to all traders, about the risk factor involved in over-staking here.