Why Sania Mirza & Zelda Williams's worth went up on Thursday

Here is a round-up of those whose worth went up or down today - Sania Mirza, Zelda Williams, Anil Kumar Sardana and Justin Bieber.

Sania Mirza (UP)



Mirza and her Zimbabwean partner Cara Black entered the US Open women's doubles semifinals. Two to go.

Zelda Williams (UP)



The 25-year-old actress is back on Twitter, which she had quit after receiving unkind comments after her father Robin Williams's death.

Anil Kumar Sardana (DOWN)



Not a good day for the Tata Power India head when a technical snag hit the Trombay plant on Tuesday, resulting in large power outages in the city.

Justin Bieber (DOWN)



The pop star has been arrested on charges of ‘dangerous driving and assault' after his ATV hit a minivan in Canada, where he is holidaying with girlfriend Selena Gomez.