The launch of the meme coin Thursday was part of a larger expansion of the trading app's crypto offerings.
Solana (SOL), Polygon (MATIC) and Compound (COMP) are also now listed on the site. Each of the tokens was up sharply in early trading Tuesday.
Robinhood was resistant to Shiba Inu, in particular, because of the volatility surrounding the crypto, analysts suggest. Year-to-date Shiba Inu is down 19.5%, with several spikes and valleys.