Explainer-SEC eyes Wall Street reforms. What is 'PFOF'?

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(NASDAQ: HOOD) Delayed: 95.56 -3.81 (3.83%)
Previous Close $99.37    52 Week High
Open $98.00    52 Week Low
Day High $98.42    P/E N/A 
Day Low $95.44    EPS
Volume 14,025,016       

Charles Schwab (NYSE: SCHW) Delayed: 111.09 +1.35 (1.23%)
Previous Close $109.74    52 Week High $37.71 
Open $109.75    52 Week Low $21.51 
Day High $111.18    P/E 142.42 
Day Low $109.19    EPS $0.78 
Volume 5,985,691       

(NASDAQ: VIRT) Delayed: 41.92 --0 (-0%)
Previous Close $41.92    52 Week High $23.97 
Open $41.92    52 Week Low $12.35 
Day High $41.92    P/E N/A 
Day Low $41.92    EPS $0.00 
Volume 1,484,109