10 Market Movers That Made Millionaires in a Week

Ten companies skyrocketed last week, jumping by double and triple digits, as investor sentiment was fueled by a flurry of corporate developments, strong earnings performance, and upbeat growth guidance.

Notably, two healthcare firms saw their share prices soar by more than 100 percent on news of acquisition and positive clinical trial results.

In this article, we spotlight the 10 top performers of the past trading week and detail the reasons behind their gains.

To come up with the list, we considered only the stocks with a $2 billion market capitalization and more than 5 million shares in trading volume, ranked based on their percentage change between November 7 and 14, 2025.

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10. Sealed Air Corp. (NYSE:SEE)

Sealed Air saw its share prices jump by 18.09 percent week-on-week as investor sentiment was fueled by reports that it is set to be acquired by investment firm Clayton, Dubilier, and Rice (CD&R).

A report by the Wall Street Journal said Wednesday that the two companies are now underway negotiations for the potential merger which could see the split of Sealed Air Corp.’s (NYSE:SEE) food packaging and protective packaging businesses.

In other news, Sealed Air Corp. (NYSE:SEE) earlier this month announced a strong earnings performance in the third quarter of the year, having incurred a 109.4 percent jump in net profit at $186 million versus only $89 million in the same period last year, primarily driven by a $57 million special items income.

Net sales, however, ended flat at $1.3 billion as a 1 percent growth in the food packaging segment was offset by the 1 percent dip in the protective packaging unit. Volumes and prices also decreased by 1 percent during the period.

On December 19, common shareholders of Sealed Air Corp. (NYSE:SEE) as of December 5 record are set to receive 20 cents worth of dividends as part of the company’s quarterly dividend distribution.

9. Clearwater Analytics Holdings Inc. (NYSE:CWAN)

Clearwater surged by 18.97 percent week-on-week as investors snapped up shares following reports that it was considering a potential sale after receiving interest from prospective buyers.

According to a report by Bloomberg, citing sources privy to the matter, Clearwater Analytics Holdings Inc. (NYSE:CWAN) is now working with advisers to weigh its options and solicit interest from prospective buyers, which it later identified as Warburg Pincus and Permira.

Additionally, last week’s gains can be attributed to bargain-hunting after the company fell to a new record low, dampened by a dismal earnings performance in the third quarter of the year.

During the period, Clearwater Analytics Holdings Inc. (NYSE:CWAN) nosedived to a $10.3 million attributable net loss from a $3.6 million attributable net income in the same period last year.

Revenues, on the other hand, jumped by 77 percent to $205 million from $115.8 million in the same comparable period, beating its guidance of $203 million to $204 million.

For the full-year period, Clearwater Analytics Holdings Inc. (NYSE:CWAN) expects revenues to end at $730 million to $731 million, or an implied year-on-year growth of 62 percent.

In the fourth quarter alone, revenues are targeted at a range of $216 million to $217 million, or a year-on-year growth of 71 to 72 percent.