Stock Market Movers: Biggest Losers and Gainers on 28 October 2026

Highest Gainers

10. ABSI: Absci Corp. (ABSI) rallies on its 3rd day, climbing 12.39% ahead of business updates as the company participates in 3 upcoming healthcare conferences.

9. STLA: Stellantis (STLA) jumps 13.04% as losses narrow by 90%, alongside bullish cost cuts and cash flow comments.

8. SKHY: SK Hynix (SKHY) extends rally for 4th day, climbs 13.30% on strong Q3 revenues.

7. HAYW: Hayward Holdings (HAYW) climbs 13.51% on strong Q3 earnings.

6. FRMI: Fermi Inc. (FRMI) soars 15.27%, mirroring broader market optimism.

5. BEAM: Beam Therapeutics (BEAM) up 15.58% on positive results from phase 1 drug candidate study.

4. VRT: Vertiv Holdings (VRT) up 16.48% on stellar Q3 earnings, higher FY growth outlook.

3. REPL: Replimune Group (REPL) soars 23.07% on bargain-hunting following intra-day losses.

2. GMAB: Genmab (GMAB) climbs 29% as cancer drug slashes risk of death by 50%.

1. AXGN: Axogen (AXGN) soars 31.47% on solid Q3 earnings.

Worst Performers

10. ODFL: Old Domino Freight Line (ODFL) falls 7.33% on a sell-the-news move after strong earnings.

9. BKR: Baker Hughes (BKR) loses 7.36% on profit-taking after 3-day rally.

8. SID: Companhia Siderúrgica Nacional (SID) drops 7.56% on Brazil market caution over incumbent president’s surprise win.

7. SEDG: SolarEdge (SEDG) slashes 8.30%, dragged by a counterpart’s disappointing earnings performance.

6. CHRW: CH Robinson Worldwide (CHRW) falls 11.14% as TD Cowen lowers price target on margin concerns.

5. CSGP: CoStar Group (CSGP) falls 13.96% on soft outlook.

4. SLS: Sellas Life Sciences (SLS) drops 14.71% on investor caution as firm hits 80th death to trigger analysis of Regal study.

3. LPLA: LPL Financial (LPLA) falls 15.23% as Commonwealth Retention falls short.

2. ENPH: Enphase Energy (ENPH) loses 16.03% on disappointing Q3 earnings and a weak Q4 outlook.

1. RAPP: Rapport Therapeutics (RAPP) falls 18.30% on $350M fundraising from a share sale and convertible notes offering.