The taper, once it actually began, “was a unique situation for the market,” Doshi says. “The Fed was in uncharted territory and had never put so much liquidity into the system and so the market was worried about what would happen when the Fed began to taper and tilt more hawkishly. In the end, the taper tantrum was unjustified, the economy continued to grow, and the stock market continued to move higher. I don’t think you’ll see a repeat of that this time around. I think investors learned their lesson.”
Fed Tapering: Definition, Impact, Timeline (businessinsider.com)