Credit Suisse shares were indicated at 2.3 Swiss francs ($2.48), up 35% from Wednesday's close.
The Swiss bank's announcement overnight helped stem heavy selling in financial markets in Asian trade on Thursday and European markets were heading for a bullish start to the day.
Analysts at JPMorgan said in a note that a takeover was the most likely scenario for Credit Suisse, especially by rival UBS .
"Credit Suisse is the first major bank, deemed too big to fail, to take up the offer of an emergency lifeline," Susannah Streeter, head of money and markets at Hargreaves Lansdown, said.
"The $54 billion rescue wad is staunching worries about a bigger run on Credit Suisse and the repercussions for other institutions around the world exposed to its operations," she added.