Traders work on the floor of the New York Stock Exchange. Photo: Reuters, Brendan McDermid

The extra yield demanded for investment grade US dollar corporate bonds versus US Treasuries has fallen to within two basis points of its post-crisis low, reports the Financial Times.

Junk bonds are hovering close to their 2014 low, while the spreads for triple-B and double-B rated bonds have already fallen below their post-crisis lows. US banks are also seeing lower spreads than since before the financial crisis.

The enthusiasm for bonds comes alongside record highs in the S&P 500 and the first new highs for blue-chip tech firms since the dotcom boom in 2000.