Here's a chart of 10yr yields relative to stocks and oil over the past few days. Apart from the general divergence heading into the end of February (thanks to Japanese rate cut and month-end trading environment) notice how big today's break has been (in the circled area):
And if you ever find yourself wondering whether or not this "CME open" business is a real thing or not, just keep an eye on seemingly inexplicable jumps that occur at 8:20am. Here is today's: