D-Wave Quantum And Advance Auto Parts Are Among Top 7 Mid-Cap Gainers Last Week (May 19-May 23): Are The Others In Your Portfolio?

These mid-cap stocks were the best performers in the last week. Are they in your portfolio?

1. D-Wave Quantum Inc. (NYSE:QBTS) shares jumped 53.47% after the company announced it launched its Advantage2 quantum system to address problems in optimization, AI, and materials simulation.
2. Regencell Bioscience Holdings Limited (NASDAQ:RGC) stock gained 42.49% last week.
3. Advance Auto Parts Inc. (NYSE:AAP) stock increased 38.94%  after the company reported first-quarter results. Several analysts raised the price forecast on the stock.
4. Merus N.V. (NASDAQ:MRUS) stock rose 32.68% after the company disclosed interim clinical data as of a February 27, 2025, data cutoff from the ongoing phase 2 trial of the bispecific antibody petosemtamab in combination with pembrolizumab.
5. Oklo Inc. (NYSE:OKLO) shares upped 29.56%, probably due to reports indicating that Trump will sign executive orders to ease regulatory requirements for new reactors.
6. Sibanye-Stillwater Limited ADS (NYSE:SBSW) shares were up 29.26%.
7. BGM Group Ltd. (NASDAQ:BGM) stock gained 27.20% last week.

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