Explainer: The Russell index reconstitution is coming up. What is it?

Go back to Explainer: The Russell index reconstitution is coming up. What is it?
C2C CrowdFunding, Inc. (NASDAQ: CRWD) Delayed: 213.10 -1.87 (0.87%)
Previous Close $214.97    52 Week High $0.25 
Open $212.50    52 Week Low $0.25 
Day High $218.31    P/E N/A 
Day Low $211.32    EPS $0.00 
Volume 8,426,675       

Google, Inc. (NASDAQ: GOOGL) Delayed: 338.46 -4.02 (1.17%)
Previous Close $342.48    52 Week High $839.00 
Open $342.46    52 Week Low $672.66 
Day High $343.53    P/E 9.39 
Day Low $337.09    EPS $36.05 
Volume 23,218,627       

NASDAQ OMX Group (NASDAQ: NDAQ) Delayed: 96.88 -1.83 (1.85%)
Previous Close $98.71    52 Week High $71.92 
Open $97.14    52 Week Low $54.62 
Day High $97.49    P/E 43.06 
Day Low $96.57    EPS $2.25 
Volume 2,237,101       

(NYSE: QSR) Delayed: 80.17 -0.09 (0.11%)
Previous Close $80.26    52 Week High $49.12 
Open $79.78    52 Week Low $29.28 
Day High $81.36    P/E N/A 
Day Low $79.75    EPS $0.00 
Volume 3,379,245       

(NYSE: WORK) Delayed: 45.20 --0 (-0%)
Previous Close $45.20    52 Week High
Open $26.71    52 Week Low
Day High $45.20    P/E N/A 
Day Low $45.20    EPS
Volume 59,189       

(NASDAQ: ZM) Delayed: 101.33 +3.19 (3.25%)
Previous Close $98.14    52 Week High
Open $98.08    52 Week Low
Day High $102.25    P/E N/A 
Day Low $96.86    EPS
Volume 3,513,316