BlackRock Warns of Whipsawed Emerging Markets After Taper Scare This content was published on March 2, 2021 - 11:08 March 2, 2021 - 11:08 (Bloomberg) -- There’s no immediate end in sight for bond investors getting tugged between risk-on rallies and selloffs that rekindled nightmares of the 2013 taper tantrum, according to the world’s largest money manager. Sergio Trigo Paz, the London-based head of emerging-market debt at BlackRock Inc., said he’s bracing for a repeat of January and February, when developing-nation assets vacillated from several weeks of a “Goldilocks scenario” to several weeks of turmoil fueled by a spike in U.S. Treasury yields.