For Premier customers - you can get 1.01% APY by opening a new promo account and funding it with new money:
https://www.us.hsbc.com/1/2/home/premier/savings
I'd imagine you can even pull out the old $100k in the other savings acct once you've transferred in the new money.
Not sure if HSBC is still offering the .9% APY deal on the current promo accounts (I'm locked out of my account since the change in their logon system) but if they are not likely worth the troubles. But if they discontinued that promo it would be, imo.