The Dow Futures contract was down 30 points, or 0.1 percent, at 7 a.m. ET (1100 GMT), while the S&P 500 Futures were down 15 points, or 0.3 percent, and the Nasdaq 100 Futures were down 110 points, or 0.8 percent. Details here.
The stock split was initially disclosed in 2012, and it began to bear fruit in 2014. Since then, investors have debated whether GOOG or GOOGL is the correct stock for their portfolio. The split was not widely welcomed at the time, with financial backers concerned about the organization retaining voting power from investors.