The 2020C Bonds are being issued for the purpose of providing funds to: (i) refund all of the. Open market purchases raise bond prices, and open market sales lower bond prices.So, open market operations (OMOs) affect bond prices. Sign up for NBC Philadelphia's News Headlines newsletter. Existing structure of rates over the near term. Movements in the prices of corporate and tax-exempt bonds roughly paralleled those of Government securities. In the United States, the Federal Reserve employed the strategy to alleviate the financial effects of the Great Recession. We have a constructive outlook on taxable munis. The supply-demand imbalance we observe in the tax-exempt market is even more noticeable in this market.