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

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(NASDAQ: HOOD) Delayed: 98.87 -5.12 (4.92%)
Previous Close $103.99    52 Week High $ 
Open $102.71    52 Week Low $ 
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Day Low $97.48    EPS $ 
Volume 20,146,766       

Charles Schwab (NYSE: SCHW) Delayed: 91.96 -2.2 (2.34%)
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Open $93.54    52 Week Low $21.51 
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Day Low $91.66    EPS $0.78 
Volume 13,895,667       

(NASDAQ: VIRT) Delayed: 41.92 --0 (-0%)
Previous Close $41.92    52 Week High $23.97 
Open $41.92    52 Week Low $12.35 
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Day Low $41.92    EPS $0.00 
Volume 919,699