Fifteen companies skyrocketed by double to triple digits last week, buoyed by fresh company-specific developments and a generally optimistic sentiment, thanks to the possible trade negotiations between the US and China.
In this article, we identified and gathered last week’s best-performing stocks, based on the percentage difference between their closing prices on May 30 and June 6, 2025.
To come up with the list, we considered only the stocks with more than 5 million in trading volume.
15. ImmunityBio, Inc. (NASDAQ:IBRX)
ImmunityBio saw its share prices increase by 18.4 percent week-on-week, with the performance primarily owed to the Food and Drug Administration’s (FDA) green light for the company to expand the access of its Anktiva treatment to patients with solid tumors.
Earlier last week, ImmunityBio, Inc. (NASDAQ:IBRX) received the approval of the FDA to expand its Cancer BioShield platform, anchored by Anktiva, to treat lymphopenia in adult patients with refractory or relapsed solid tumors, independent of tumor type who have progressed after first-line standard-of-care treatment, chemotherapy, radiation, or immunotherapy.
To date, there are no approved treatments for lymphopenia, a depletion of critical lymphocytes responsible for immunogenic cell death, specifically natural killer cells, killer CD8+ T cells and CD4+ with memory T cells.
Following the announcement, the company earned a “buy” recommendation and a price target of $8 from investment firm HC Wainwright, representing a 154-percent upside from its closing price of $3.15 on Friday.
14. ON Semiconductor Corporation (NASDAQ:ON)
ON Semiconductor grew its share prices by 19.39 percent week-on-week as investor sentiment was boosted by its optimistic outlook about the automotive sector and its significant benefits to its business.
While ON Semiconductor Corporation (NASDAQ:ON) remained cautiously optimistic about the ongoing global trade tensions, it expected to see growth in the second half of the year on expectations of higher automotive manufacturing activity in China.
Additionally, the company said it gained a significant market share outside China, with continued volume growth in European electric vehicles.
To mitigate geopolitical risks, ON Semiconductor Corporation (NASDAQ:ON) said it adopted a dual manufacturing strategy, with primary and secondary production facilities located both in the US and overseas.
“When you have a primary and a secondary—one in the US, one outside the US—when you have geopolitical uncertainties, that becomes a competitive advantage. And we’ve been utilizing that competitive advantage to maintain stability with our customers and really capture the demand without the volatility,” said ON Semiconductor Corporation (NASDAQ:ON) President and CEO Hassane El-Khoury.
Hedge Fund Resource Center