With TLT at nosebleed heights the question obviously becomes, is it time to switch into equities yet?
As you can see TLT (red line) reaches fever pitch levels almost always at excellent entry points into equities, going back all the way to the GFC this has held true.
TLT for what it's worth is also extremely extended, driven to these heights on trade fears, slowing growth and a litany of over issues including the abundance of negative yielding debt, leading to increased interest in US treasuries.
But as traders we all know that nothing can go in one direction forever, what goes up must come down.
Stocks for their part look to be in 'hurry up and wait' mode, the September FOMC meeting will likely be the catalyst for the next move (both for stocks and bonds). If the fed provides the desired outlook (or direct rate cuts) that equities want then stocks will be the place to be, bonds too will benefit from lower rates (premium wise that is), but the liquidity will undoubtedly support higher equities.
Until the FOMC meeting, best to be cautious, but i for one would be careful about staying in bonds for too long.