When You Link your Aadhaar with Bank Accounts, Shares, Mutual Funds and Mobile Number, will UIDAI also get these information?

No, When you link your Aadhaar with your Bank Accounts, Mutual Funds, Insurance, Mobile Number etc. the companies only sends Aadhaar Number, Biometrics, Name etc. to UIDAI for verification of your identity.

When You Link your Aadhaar with Bank Accounts, Shares, Mutual Funds and Mobile Number, will UIDAI also get these information?

And they do not share or send your account details like bank, mutual fund, insurance, mobile number etc. to UIDAI. UIDAI only responds to verification requests only by replying YES or NO.

In some cases if verification answer is YES, your basic KYC details like name, address, photo etc. will be available with UIDAI are sent to the service providers.