Repurchase agreements or Repos are a cornerstone of today's leveraged economic system. They've been around since 1917. It's a way for banks to eke out a few more basis points on their bond holdings. Just yesterday the interest rate shot up from 2.25% to 10% overnight. This situation is unheralded. When things start going wrong in this market, there's likely major problems ahead. It's a market based on trust and certainty of repayment by banks and other major financial institutions. When they lose faith as they did in 2008, bad things happen. Like credit freezes and potential bank failures. Will 2019 be a replay of 2008? Let's see what happens next.