Big moves: S&P 500 stock stories

Daily stories about unusually large one-day price moves in S&P 500 stocks, measured against each stock’s own history, its sector and its usual volume, found automatically and backed by evidence. Every claim is labelled observed, calculated or possible contributor.

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  PSKY −9.1%: one of its biggest daily moves this year2026-10-01 · PSKY
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  COHR +10.7%: an unusually large move for this stock2026-10-01 · COHR
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  SNPS +12.9%: one of its biggest daily moves this year2026-10-01 · SNPS
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  FICO +13.7%: one of its biggest daily moves this year2026-10-01 · FICO
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  ACN +16.4%: one of its biggest daily moves this year2026-10-01 · ACN
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  CTVA −84.0%: one of its biggest daily moves this year2026-10-01 · CTVA
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  CTSH +7.6%: one of its biggest daily moves this year2026-10-01 · CTSH
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  LITE +9.2%: a notable move2026-10-01 · LITE
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  SNPS +4.9%: an unusually large move for this stock2026-09-30 · SNPS
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  GIS −5.3%: one of its biggest daily moves this year2026-09-30 · GIS
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  GEN +6.4%: one of its biggest daily moves this year2026-09-30 · GEN
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  JBL −9.1%: one of its biggest daily moves this year2026-09-30 · JBL
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  CBOE +4.8%: an unusually large move for this stock2026-09-30 · CBOE
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  HPE +5.7%: a notable move2026-09-30 · HPE
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  MRNA −6.6%: a notable move2026-09-30 · MRNA
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  NOC −4.3%: an unusually large move for this stock2026-09-30 · NOC
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  FICO −4.2%: a notable move2026-09-30 · FICO
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  GM −3.8%: an unusually large move for this stock2026-09-30 · GM
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  RCL +7.0%: an unusually large move for this stock2026-09-29 · RCL
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  BE +11.3%: an unusually large move for this stock2026-09-29 · BE
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  CCL +13.4%: one of its biggest daily moves this year2026-09-29 · CCL
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  FICO −27.0%: one of its biggest daily moves this year2026-09-29 · FICO
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  CBOE +6.1%: one of its biggest daily moves this year2026-09-29 · CBOE
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  QCOM −7.2%: an unusually large move for this stock2026-09-28 · QCOM
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  BE −9.2%: a notable move2026-09-28 · BE
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  CVNA −7.4%: an unusually large move for this stock2026-09-28 · CVNA
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  DASH −7.6%: one of its biggest daily moves this year2026-09-28 · DASH
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  BA −6.3%: one of its biggest daily moves this year2026-09-28 · BA
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  CVS +4.8%: one of its biggest daily moves this year2026-09-28 · CVS
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  GEN −6.3%: one of its biggest daily moves this year2026-09-28 · GEN

All of today’s stories →

Statistics only, not investment advice.