In a liquidity crisis, here's what to look for

Here is a selection of sectors that could have liquidity problems if buyers for thinly traded assets disappear, quickly collapsing prices when markets go into a correction.
Secondary markets for private equity, commercial mortgage-backed securities derivatives, leveraged loans and "passive" ETFs are all areas where analysts are worrying illiquidity exists.
Ironically, central banks' desire to supply as much liquidity as possible — via low interest rates — has reduced yields globally,