Symbotic plans to trade on the Nasdaq with the symbol "SYM." The deal is the latest among Boston tech companies seeking to avoid a traditional initial public offering and use the speedier route to list on a stock exchange via merging with a special purpose acquisition company, or SPAC. Last week, Boston weather tech company Tomorrow.io announced a $1.2 billion SPAC deal, and in October, wireless Internet service Starry said it planned a SPAC merger valued at $1.66 billion. Both deals are still pending, as is financial tech startup Circle's $4.5 billion deal announced in July.