Best- and Worst-Performing Stocks of October 2023

Editor’s Note: This article was partially generated by Wordsmith, an automated smart-text platform, using data from the Morningstar US Large-Mid Index and Morningstar Direct. It has been reviewed by Morningstar editors.

Best-Performing Stocks of October 2023

Apellis Pharmaceuticals APLS rallied 27.9% in October, but shares were still down 5.9% in the year to date. Shares are 48.6% below their last high on June 14, 2023.

Deckers Outdoor DECK climbed 16.1%, leaving the stock up 49.6% for the year.

Allstate ALL rallied 15.0% but was still down 3.3% for the year. The company’s stock ended the month with a Morningstar Rating of 3 stars, trading at a 5% premium to its fair value estimate of $122.

Progressive PGR surged 13.6%, having risen 22.2% from the start of the year. The company’s stock ended the month with a Morningstar Rating of 1 star, trading at a 39% premium to its fair value estimate of $114.

Dollar General DG jumped 13.2%, but shares were still down 51.1% in the year to date. Shares are 54.4% below their last high on Oct. 31, 2022. The company’s stock ended the month with a Morningstar Rating of 4 stars, trading at a 15% discount to its fair value estimate of $140.

Worst-Performing Stocks of October 2023

Sarepta Therapeutics SRPT fell 44.5% in October, having fallen 48.1% from the start of the year. Shares are 52.1% below their last high on May 15, 2023.

SolarEdge Technologies SEDG slid 41.4%, having fallen 73.2% from the start of the year. Shares are 78% below their last high on Feb. 15, 2023. The company’s stock ended the month with a Morningstar Rating of 4 stars, trading at a 48% discount to its fair value estimate of $147.

Align Technology ALGN plunged 39.5%, leaving the stock down 12.5% for the year. Shares are 55.7% below their last high on July 27, 2023. The company’s stock ended the month with a Morningstar Rating of 4 stars, trading at a 42% discount to its fair value estimate of $316.

TransUnion TRU fell 38.9% and declined 22.3% in the year to date. Shares are 47% below their last high on Aug. 31, 2023. The company’s stock ended the month with a Morningstar Rating of 5 stars, trading at a 52% discount to its fair value estimate of $91.