Just been looking at my fixed interest portfolio this evening which has lots of retail bonds, the M&G Corporate Bond fund and SLXX. I could see that year to date the M&G fund was down about 2% but SLXX was showing a 7% decline which got me interested. It seems the latest net asset value (11 March) was £152.35 but the bid at close on 12 March was £139.4 and offer £148.95 which accounts for most of the 7% fall. I don't intend to sell, but is this common that ETFs can go to such wide spreads in a crash? It is one of ishares core funds with net assets of£1.8 billion so I had hoped there was plenty of liquidity available. Will be interested to monitor the price tomorrow . . .