Stock futures were hovering near the flatline on Friday morning after a second estimate of first-quarter economic growth was upwardly revised. 

S&P 500 futures were down 0.01%, Dow Jones Industrial Average futures fell 0.02%, and Nasdaq futures increased 0.02%.  

The U.S. economy grew at a pace of 0.8% in the first quarter, above a previous estimate showing 0.5% growth. However, the revision was slightly lower than an expected 0.9%. A stronger U.S. dollar, weaker global growth and chaotic financial markets weighed on the U.S. economy, though not as badly as initially feared. 

Wall Street may get more clues on monetary policy from Federal Reserve Chair Janet Yellen's appearance at Harvard on Friday, when she's interviewed by Professor Greg Mankiw and receives the Radcliffe Medal. It's unlikely she will say anything explicit about interest rates, though investors will look for hints.

Crude oil prices moved further away from the $50-mark on Friday after briefly topping the level for the first time since in seven months a day earlier. Crude got a pick-up earlier in the week on more signs reduced U.S. production was eating into domestic inventories. 

West Texas Intermediate crude oil was down 0.8% to $49.09 a barrel on Friday morning. 

Thermo Fisher (TMO) - Get Report  agreed to buy FEICo. FEIC in an all-cash deal worth $4.2 billion. Thermo agreed to pay $107.50 a share for FEIC, representing a 14% premium to Thursday's close. The acquisition is expected to close in early 2017.

Thermo Fisher is a holding in Jim Cramer's Action Alerts PLUS Charitable Trust Portfolio. Want to be alerted before Cramer buys or sells TMO? Learn more now.

A U.S. jury ruled in Alphabet's (GOOGL) - Get Report favor on Thursday evening after finding that Google's use of Java programming in Android was in fair use. Oracle (ORCL) - Get Report had brought the lawsuit against Google, arguing the use of the software infringed upon their patents. The court battle has been ongoing since 2010 and Oracle expects to appeal the decision. 

Alphabet is a holding in Jim Cramer's Action Alerts PLUS Charitable Trust Portfolio. Want to be alerted before Cramer buys or sells GOOGL? Learn more now.

GameStop (GME) - Get Report sank in premarket trading after posting disappointing same-store sales in its first quarter. The video-game retailer reported a 4.4% decline in sales to $1.97 billion, while sales in stores open at least a year fell 6.2% compared to an 8.6% increase a year earlier. 

Palo Alto Networks (PANW) - Get Report  slumped 11% after forecasting slower growth in its fourth quarter. The online security company said it expects fourth-quarter earnings between 48 cents and 50 cents a share, slightly weaker than analysts had expected. The company has "anticipated for some time that seasonality would evolve in the business," chief financial officer Steffan Tomlinson said in a statement.