CookieStocks
GRMN −4.5%: an unusually large move for this stock. GARMIN LTD moved 4.1 points less than its sector, on 0.3× its usual volume.

2026-10-08 · GRMN

GRMN −4.5%: an unusually large move for this stock

GARMIN LTD moved 4.1 points less than its sector, on 0.3× its usual volume.

The story in plain words

Thursday, October 8, 2026. GRMN −4.5%: an unusually large move for this stock. GARMIN LTD moved 4.1 points less than its sector, on 0.3× its usual volume.

What the data shows for Garmin (GRMN): GRMN −4.5% today. Its sector fund (XLY) −0.4% today. S&P 500 (SPY) −0.3% today.

Worked out from that data: 4.1 points less than its sector. Volume 0.3× its 20-day average. Bigger than 97% of its daily moves over the past 250 trading days. After the 9 most similar GRMN days since Oct 20, 2021, the stock was higher 5 days later 3 of 9 times (History, not a forecast).

Possible contributors. These line up in time with the move; they are not confirmed causes: News: “Which S&P500 stocks are gapping on Thursday?” (Published around the move. Timing only, not a confirmed cause). News: “Garmin (GRMN) Is More Diversified Than Many Investors Realize: Here’s Why” (Published around the move. Timing only, not a confirmed cause).

About the company: Garmin trades as GRMN and is part of the S&P 500, in the Consumer Discretionary sector (Consumer Electronics), headquartered in Schaffhausen, Switzerland, founded in 1989.

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
    GRMN −4.5% todayOct 8, 2026, 11:35 AM ET
  • OBSERVED
    Its sector fund (XLY) −0.4% todayOct 8, 2026, 11:35 AM ET
  • CALCULATED
    4.1 points less than its sectorHow: stock return − sector fund return · Oct 8, 2026, 11:35 AM ET
  • OBSERVED
    S&P 500 (SPY) −0.3% todayOct 8, 2026, 11:35 AM ET
  • CALCULATED
    Volume 0.3× its 20-day averageHow: today’s volume ÷ average of the last 20 days · Oct 8, 2026, 11:35 AM ET
  • CALCULATED
    Bigger than 97% of its daily moves over the past 250 trading daysHow: share of past daily moves smaller in size · Oct 8, 2026, 11:35 AM ET
  • POSSIBLE CONTRIBUTOR
    News: “Which S&P500 stocks are gapping on Thursday?”Published around the move. Timing only, not a confirmed cause. · Oct 8, 2026, 10:35 AM ET
  • POSSIBLE CONTRIBUTOR
    News: “Garmin (GRMN) Is More Diversified Than Many Investors Realize: Here’s Why”Published around the move. Timing only, not a confirmed cause. · Oct 8, 2026, 10:00 AM ET
  • CALCULATED
    After the 9 most similar GRMN days since Oct 20, 2021, the stock was higher 5 days later 3 of 9 timesHistory, not a forecast. · How: same-company days with a move of similar size and direction

Garmin (GRMN) financials and filings →

More stories

Statistics only, not investment advice. Past moves don’t predict future ones. Data as of Oct 8, 2026, 11:35 AM ET.