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    Market Weather

    Today’s breadth as a weather report

    Wednesday, May 18, 2011

    Sunny

    84% rose · new highs beat lows 12 to 1

    Sunny on Wednesday, May 18, 2011

    Of the 500 most-traded US stocks, 84% of those that moved rose.

    New 52-week highs outnumbered new lows 12 to 1.

    The numbers

    Rose
    416
    Fell
    81
    New 52-week highs
    7.3%
    New 52-week lows
    0.6%
    Above their 50-day average
    55%
    Above their 200-day average
    83%
    Unchanged
    3

    Updated each night after the close. Latest session: Monday, October 19, 2026.

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    End-of-day data for the 500 most-traded US stocks by dollar volume, re-ranked each month. Updated each night after the close. It describes the day; it is not a forecast. Not financial advice.

    How to read the weather

    Each scene is one trading day for the 500 most-traded US stocks, every session since 2004. The sky comes from one number: of the stocks that moved, the share that rose.

    • Sunny. More than 70% rose: a broad advance.

    • Fair. 58% to 70% rose.

    • Foggy. 42% to 58% rose: a split day, with neither side in charge.

    • Showers. 30% to 42% rose.

    • Stormy. Under 30% rose: a broad sell-off.

    • Windy. Stocks moved in lockstep: their average correlation over the past month ran well above its level for the past year. Wind clears fog, so a split day with wind is simply windy.

    • Rainbow. A breadth thrust: a rare surge of broad buying over ten sessions (Zweig, breakaway or 50-day thrust).

    • Sun shower. New 52-week highs and new lows both widened at once: a split tape.

    The flag on the tallest tower hangs limp on a calm day and streams out in the wind. The ticker band runs the day’s numbers.

    It describes the day that closed. It is not a forecast.

    2011 in weather

    ← 20102012 →

    Every session of 2011. Pick a day to see its weather.

    • Sunny80
    • Fair36
    • Foggy36
    • Showers28
    • Stormy72
    • Windy days99

    1. Jan

    2. Feb

    3. Mar

    4. Apr

    5. May

    6. Jun

    7. Jul

    8. Aug

    9. Sep

    10. Oct

    11. Nov

    12. Dec

    The stormiest and sunniest days since 2004

    Stormiest

    1. Dec 1, 200899.6% fell
    2. Aug 4, 201199.6% fell
    3. Jun 4, 201099.6% fell
    4. Mar 12, 202099.6% fell
    5. Feb 27, 200799% fell

    Sunniest

    1. Dec 26, 201899.6% rose
    2. Aug 11, 201199% rose
    3. Dec 31, 201299% rose
    4. Oct 4, 202299% rose
    5. Apr 9, 202599% rose