BB, SIDU, RGTI Stocks Lead Last Week’s Wildest Upswings: Here's What Happened

• BB shares closed up nearly 19% on Friday and continued to climb overnight, heading into Tuesday after its leadership touted a new growth phase. 
• SIDU stock closed up nearly 24% and edged higher in extended trading on Monday, building on momentum from its strong earnings and benefiting from optimism around SpaceX’s IPO. 
• RGTI jumped to close up nearly 20% in the last trading session after the Trump administration announced investments aimed at boosting the quantum computing industry in the U.S.

BlackBerry Ltd. (BB), Sidus Space Inc. (SIDU), and Rigetti Computing Inc. (RGTI) emerged as some of last week’s biggest stock movers as traders rotated into a mix of artificial intelligence, quantum computing, and space-tech companies.

BB shares closed up nearly 19% on Friday and continued to climb overnight heading into Tuesday. SIDU stock closed up nearly 24% last week and edged up nearly 4% in extended trading hours, while RGTI jumped to close up nearly 20% in the last trading session.  

BlackBerry Highlights New Growth Phase

The company’s shares shot up on Friday, pushing its weekly performance to its best in nearly 1.5 years after its leadership touted a new growth phase.

Speaking at the CIBC Technology & Innovation Conference 2026, CFO Tim Foote said BlackBerry has transformed from a cash-burning company into a profitable software business, delivering eight consecutive quarters of improving GAAP net income and positive cash generation.

QNX business President John Wall pointed to growing opportunities beyond automotive markets for the software, particularly in robotics, industrial automation and physical AI applications that require higher-performance computing systems beyond traditional automotive markets.

Meanwhile, BlackBerry’s Secure Communications division continued to strengthen its government and critical infrastructure positioning after BlackBerry AtHoc completed its 2026 FedRAMP Class D (High) re-certification, a designation for cloud systems that handle highly sensitive U.S. government data. Recently, BlackBerry also renewed its share buyback program, allowing the repurchase of up to 26.8 million common shares through May 2027.

BB shares have more than doubled so far this year. On Stocktwits, retail sentiment around the stock jumped to ‘extremely bullish’ territory over the past 24 hours amid ‘high’ message volumes.

Sidus Extends Earnings Momentum, Rallies On SpaceX Optimism

Shares of the space company extended its rally last week following positive first-quarter 2026 results. SIDU traded up for three consecutive days and was among the best-performing stocks on Friday.

The company’s first-quarter 2026 results showed an improved balance sheet and a revenue increase of about 51% year-over-year to $359,372, while net loss narrowed to $5.21 million from $6.41 million a year earlier.

Broader enthusiasm across the space sector also contributed to the move, with renewed investor interest in satellite, defense and space infrastructure stocks following growing speculation around SpaceX’s massive IPO expected in June.

Investor sentiment also improved after Sidus Space completed a $58.5 million registered direct offering in April, significantly strengthening its liquidity position and leaving the company debt-free. Sidus reported roughly $27.35 million in cash at the end of the quarter, easing near-term financing concerns that had previously weighed on the stock.

SIDU shares have surged about 239% in the last year, with analysts expecting a further upside of about 95%, based on its 12-month average price target on Koyfin. On Stocktwits, retail sentiment around the stock was in the ‘bullish’ territory over the past 24 hours amid ‘high’ message volumes.

Rigetti Computing Pops On Government Funding

The quantum computing company’s shares continued their rally on Friday, extending to three consecutive days of gains, after the Trump administration announced $100 million in grants for the company as part of a broader package aimed at boosting the quantum computing industry in the U.S. RGTI also had its best weekly gains in about eight months.

The agreement with the U.S. Department of Commerce will give the company the funding over the next three years under the CHIPS Act. Rigetti said it plans to use the capital to overcome key technical challenges associated with scaling superconducting quantum computing systems.

The company also said that the investment will support efforts to develop next-generation cryostat architectures and advance the miniaturization and integration of novel readout electronics.

RGTI shares have gained more than 86% in the last year. On Stocktwits, retail sentiment around the stock was in the ‘extremely bullish’ territory over the past 24 hours amid ‘extremely high’ message volumes.

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