Quantum Computing Inc.

Rigetti Computing, Inc.

D-Wave Quantum Inc.

IonQ, Inc.

Rosenblatt Securities analyst John&nbsp;McPeake has <a href="https://www.barrons.com/articles/rigetti-quantum-computing-stocks-buy-93675ecd?gaa_at=eafs&amp;gaa_n=AWEtsqdbXTohrP-EnKqWHR-LCZ68VS4mLwbi3DYfRGKMLq1zgpcXrz5mqbAH&amp;gaa_ts=6969fb1d&amp;gaa_sig=mbcEqEooeQ6Icj1u-aO2x0KEYgp7TvDzxt23rwD7u6HbCHg77G0ZWuInBZV4vbJKdnsLpZsNjP2p8LQE9O4GPg%3D%3D">initiated</a>&nbsp;on shares of quantum computing firms Rigetti Computing and Quantum Computing Inc., opening coverage with "buy" ratings. Amid "trepidation on Wall Street," McPeake argues they already have working products that could give them a competitive advantage in the future.