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PTC +33.8%: one of its biggest daily moves this year. PTC INC. moved 33.5 points more than its sector, on 11.7× its usual volume.

2026-10-05 · PTC

PTC +33.8%: one of its biggest daily moves this year

PTC INC. moved 33.5 points more than its sector, on 11.7× its usual volume.

The story in plain words

Monday, October 5, 2026. PTC +33.8%: one of its biggest daily moves this year. PTC INC. moved 33.5 points more than its sector, on 11.7× its usual volume.

What the data shows for PTC Inc. (PTC): PTC +33.8% today. Its sector fund (XLK) +0.4% today. S&P 500 (SPY) +0.6% today.

Worked out from that data: 33.5 points more than its sector. Volume 11.7× its 20-day average. Its biggest daily move in the past 250 trading days.

Possible contributors. These line up in time with the move; they are not confirmed causes: News: “Curious about which S&P500 stocks are generating unusual volume on Monday? Find out below.” (Published around the move. Timing only, not a confirmed cause). News: “Which S&P500 stocks are moving on Monday?” (Published around the move. Timing only, not a confirmed cause). DEFA14A filed (Filed around the move. Timing only). 8-K filed: Material agreement, Regulation FD disclosure (Filed around the move. Timing only).

About the company: PTC Inc. trades as PTC and is part of the S&P 500, in the Information Technology sector (Application Software), headquartered in Boston, Massachusetts, founded in 1985.

This is one of CookieStocks’ daily stock 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. Stories are found automatically each trading day from market data and SEC filings, and every claim is labelled as observed, calculated or a possible contributor. Statistics only, not investment advice.

Prove it

Every claim on the graphic, labelled: observed (straight from the data), calculated (worked out from it), or possible contributor (lines up in time, not a confirmed cause).

  • OBSERVED
    PTC +33.8% todayOct 5, 2026, 1:35 PM ET
  • OBSERVED
    Its sector fund (XLK) +0.4% todayOct 5, 2026, 1:35 PM ET
  • CALCULATED
    33.5 points more than its sectorHow: stock return − sector fund return · Oct 5, 2026, 1:35 PM ET
  • OBSERVED
    S&P 500 (SPY) +0.6% todayOct 5, 2026, 1:35 PM ET
  • CALCULATED
    Volume 11.7× its 20-day averageHow: today’s volume ÷ average of the last 20 days · Oct 5, 2026, 1:35 PM ET
  • CALCULATED
    Its biggest daily move in the past 250 trading daysHow: share of past daily moves smaller in size · Oct 5, 2026, 1:35 PM ET
  • POSSIBLE CONTRIBUTOR
    News: “Curious about which S&P500 stocks are generating unusual volume on Monday? Find out below.”Published around the move. Timing only, not a confirmed cause. · Oct 5, 2026, 1:05 PM ET
  • POSSIBLE CONTRIBUTOR
    News: “Which S&P500 stocks are moving on Monday?”Published around the move. Timing only, not a confirmed cause. · Oct 5, 2026, 12:35 PM ET
  • POSSIBLE CONTRIBUTOR
    DEFA14A filedFiled around the move. Timing only. · Source: SEC EDGAR · Oct 5, 2026, 4:00 PM ET
  • POSSIBLE CONTRIBUTOR
    8-K filed: Material agreement, Regulation FD disclosureFiled around the move. Timing only. · Source: SEC EDGAR · Oct 5, 2026, 4:00 PM ET

PTC Inc. (PTC) financials and filings →

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Statistics only, not investment advice. Past moves don’t predict future ones. Data as of Oct 5, 2026, 1:35 PM ET.