What's Trading: "Options Traders Brace for Pullback 3D Systems (DDD)"

We didn't intend to go all 3D on you but that's the way it's looking today.
From What's Trading:

3D Systems (DDD) rallies $4.30 to $70.12 in active trading of 3.1 million shares and new record highs, but with no headlines to explain the 7 percent rally in shares of the Rock Hill, SC maker of 3D printers and other devices. On the options front, trading is brisk and implied volatility is moving sharply higher as well. 12,000 calls and 13,000 puts so far. The top trade is a May 50 – 60 put spread, apparently bought for $1.10, 900X....MORE

See also the post immediately below:
What's Moving: 3D Printer Arcam AB Up 10.72% (AMAVF)