To summarise, that's what we've got so far:
BAML: 3.4. - 7.4
UBS: 3.4. - 7.4
BNP: 18.-21.4
Lazard - offer a choice of 2 weeks: week beginning 3rd April and Week beginning 10th
HSBC- 18-21st April
Goldman Sachs- 3rd- 13th April
Barclays 27-31st March/ 3rd-7th April
Citi 27-31st March
Nomura:
Explore Nomura: 3rd- 7th April
Women's immersion programme: 3rd - 13th April
BAML, UBS, Lazard and Nomura are the only firms that are giving out offers so far (? need to be confirmed). Citi, GS, HSBC and Barclays's dates are confirmed according to SEO. BNP's date is listed on its website