The iShares 20+ Year Treasury Bond ETF (TLT) is trading more than 1% lower at $124. Tradeweb, an electronic bond-trading platform, has seen a 24 percent pickup in trading of inflation-protection securities globally after finding little interest in the prior two years, the firm said in a post earlier this week. The Thursday auction was less than a week after the government reported core consumer prices, excluding food and energy, rose only 0.1% in September, below expectations.