### Comment:
It was because Abdiel a large fund that owned around 15-20% of the outstanding A class shares went out and added another 600k+ shares to reach 25% of the shares. 
  
 That's the main reason for the FSLY pump, they've been buying massive amounts of shares the past week.

### REPLY:
Just checked form 4, Abdiel has been buying up FSLY from16th to 20th. 
  
 https://www.sec.gov/Archives/edgar/data/1362771/000090445419000612/xslF345X03/edgar.xml

### END.