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MKS Instruments (MKSI) — large price moves

Information Technology · NASDAQ

Single sessions where MKSI closed 10% or more away from the previous close, between 2025-10-08 and 2026-10-08. Each one lists the events filed in the 5 days ending at that session, in date order.

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Of the 5 moves listed, 2 have at least one filed event in the 5 days ending at the session, and 3 have none. Across the catalog most large moves have nothing filed near them, so an empty list is an ordinary result and not a gap.

Moves

  • 2026-09-14 -10.5% $267.31 to $239.27 filed events in the 5 days to 2026-09-14

    No filed event was recorded for this company in the 5 days ending on this session. That is what our sources hold, not a statement about what happened.

  • 2026-07-30 +13.8% $257.61 to $293.30 filed events in the 5 days to 2026-07-30

    No filed event was recorded for this company in the 5 days ending on this session. That is what our sources hold, not a statement about what happened.

  • 2026-07-02 -11.1% $411.05 to $365.56 filed events in the 5 days to 2026-07-02

    No filed event was recorded for this company in the 5 days ending on this session. That is what our sources hold, not a statement about what happened.

  • 2026-06-11 +10.7% $312.09 to $345.32 filed events in the 5 days to 2026-06-11
    • 2026-06-10 Insider trade Open-market sale reported by an insider1 transaction · 1 insider · $247,905Source: SEC Form 4
  • 2025-11-06 +11.0% $139.92 to $155.25 filed events in the 5 days to 2025-11-06
    • 2025-11-06 Earnings Quarterly results reportedquarter ended 2025-09-30 · reported EPS USD 1.93 against an estimate of USD 1.85 · surprise +4.1%Source: SEC filing calendar + Yahoo earnings history
    • 2025-11-06 Periodic filing 10-Q filedaccession 0001193125-25-268932Source: SEC EDGAR

These are events filed near a session, listed by date. They are not ranked, and no connection between an event and a price move is stated or implied.

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See the full company profile: MKS Instruments (MKSI).

Informational only — NOT financial advice. Price moves are computed from stored daily closes; filed events come from their own sources with their own dates.