We study incentives for post-trade information disclosure in the over-the-counter financial markets. In a setting where execution prices alone do not fully capture the value of the traded assets, we model decisions of investors to hide or reveal information embedded in unexecuted offers. Our model explains why investors, requesting quotes from multiple dealers in the corporate bond market, might choose to conceal the runner-up offer — the cover — from the winning dealer even though the increased informational opacity decreases dealers’ incentives to win the trade and worsens their quotes. Investors conceal covers if they trade frequently, gains from trade are high, or uncertainty about bond values is low. We discuss the implications for market liquidity, fragmentation, and the design of electronic RFQ platforms.