The new ECB headquarters in Frankfurt, Germany.

Bond traders' "short of a lifetime" – an overdue correction since mid-April of the bubbly German bond market – has brought down the yields on the Greek ten-year government bond by 135 basis points to 10.75 percent last Friday – one of the lowest yields in a highly volatile Greek market since the Coalition of the Radical Left Party (the Syriza) came to power last January.

That was a nice piece of yield arbitrage, especially since it also came with Jean-Claude Juncker's (president of the E.U. Commission) bear hug of the previously shunned Greek Prime Minister Alexis Tsipras. To top it off, Juncker made a stunning statement that Greece's euro zone exit "was not an option" during his high-profile speech (in French) at the Belgium's Université catholique de Louvain on May 4, 2015.