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Biggest moves on record

Every trading day we hold, as a bar. The five biggest are marked.

  1. 1+24.8%31 Oct 2025Max
  2. 2−18.6%30 Oct 2026Max
  3. 3−10.4%6 Feb 2026High
  4. 4+8.9%19 Aug 2026Very High
  5. 5+7.6%5 Oct 2026High

Every day, by size of move

265 trading days, 2025–2026. One square is one day.

  • Max20.8%
  • Very High10.4%
  • High72.6%
  • Moderate83.0%
  • Low6323.8%
  • Very Low18469.4%

Biggest moves on record

Every week we hold, as a bar. The five biggest are marked.

  1. 1+23.4%Week of27 Oct 2025Max
  2. 2+17.7%Week of8 Feb 2021Max
  3. 3−17.3%Week of2 Feb 2026Low
  4. 4−16.3%Week of3 Feb 2025Low
  5. 5+16.1%Week of14 Sep 2026Moderate

Every week, by size of move

302 weeks, 2021–2026. One square is one week.

  • Max41.3%
  • Very High10.3%
  • High10.3%
  • Moderate82.6%
  • Low9029.8%
  • Very Low19865.6%

Biggest moves on record

Every month we hold, as a bar. The five biggest are marked.

  1. 1+70.1%Jan 2012Moderate
  2. 2+52.1%Jan 2006Max
  3. 3+37.4%Jan 2014Low
  4. 4+36.6%Dec 2023High
  5. 5+33.2%Apr 2006Moderate

Every month, by size of move

251 months, 2005–2026. One square is one month.

  • Max31.2%
  • Very High00.0%
  • High62.4%
  • Moderate114.4%
  • Low4417.5%
  • Very Low18774.5%

Monthly performance

Over the past 22 years, ILMN rose most often in June (17 of 22) and fell most often in August (13 of 22).

How it reacted to its last results

ReportedResultOn the day
29 Oct 2026 Beat$1.44 vs $1.36 expected −18.6%
30 Jul 2026 Beat$1.31 vs $1.23 expected +0.0%
30 Apr 2026 Beat$1.15 vs $1.05 expected +7.1%
5 Feb 2026 Beat$1.35 vs $1.23 expected −10.4%

Beat or missed means profit per share came in above or below what experts expected. The price move is for the first trading day the results could move.

Compared with its neighbours

On a normal day, ILMN moves about 1.8% up or down. That is livelier than 8 in 10 shares we follow.

Industry · Health Care

LLYEli Lilly and Co.UNHUnitedHealth GroupJNJJohnson & JohnsonABBVAbbVie Inc.MRKMerck & Co.NVSNovartis AGAZNAstraZeneca plcNVONovo Nordisk A/S

and 47 more

In the news

Recent headlines about Illumina Inc., from the outlets that wrote them.

  1. 01Yahoo Finance9 hours agoWhy Illumina (ILMN) shares are getting obliterated today
  2. 02Yahoo Finance16 hours agoIllumina (ILMN) Stock Stays Reasonable After Raised 2026 Guidance
  3. 03Simply Wall St18 hours agoIllumina (ILMN) Stock Price Drops Despite Strong Q3 Earnings
  4. 04GuruFocus19 hours agoIllumina Inc (ILMN) Shares Fall 18.6% -- What GF Score of 63 Tel
  5. 05Yahoo Finance20 hours agoIllumina CEO on Q3 Results and Business Outlook
  6. 06Investor's Business Daily20 hours agoIllumina Crashes As Tariffs, AI Woes Eat Into 157% Run-Up