1. Shorts Covering ....squeeeeeeeeeze. Shorts under $1 have to cover, shorts under $2 lock will lock in profit. Massive squeeze.
2. Local Institutions who sold on admin risk, will buy it all back
3. Hedge Funds (event and arbitragers, local, global) in the morning and afternoon especially
4. Local and Global Retail buyers who like the bid especially millions of Chinese Nationals with offshore accounts and many HK HNW buyers through Hong Kong at around midday