nxs spp, page-43

As i underst6and the comment "perceived overhang". It is where shorters stack the sell side to encourage would be buyers not to buy yet and proceed to short the share price down against little / no opposition - low volume price movement - and then stack the "sell side" with their stop losses whcih gives the impression of added selling pressure - and it isn't real sellers at all.
Shorters join in to the fray to reduce their exposure. The perceived tag can become a "negative sentiment bubble" as much as any positive sentiment bubble. In my view it is more insidious because it leads to a complete breakdown in "investor" confidence.