Investors are piling into the TLT ETF even as it remains at its lowest level in a three-decade low amid the 30-year treasuries woes.

The iShares 20+ Year Treasury Bond ETF is heading toward its strongest daily gain in nine months, up about 1.5% Wednesday.

Investors are piling into the TLT ETF even as it remains at its lowest level in a three-decade low amid the 30-year treasuries woes.