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TDY

Teledyne Technologies Incorpora · Technology · Scientific & Technical Instruments
TECHBuyMABuy · 5ZACKSBuy R500#409 today TARGET+17%
$658.23 -2.84% today · +5.25% 1W
Oct 30 close or latest
Why it's movingUnderperforming without a clear catalyst yetReadout ›
Latest session Big drop -2.8% on the day (line -1.7%)
After its 58 big drops in the past 5 years, TDY was higher a day later 36 times out of 58; half the outcomes fell between -1.0% and +1.4%. History, not a forecast.
See the aftermath

After each kind of event

EventEventsReaction day1 day1 week1 month1 quarter
Any day 1,255 — +0.1%671/1254 up +0.3%681/1250 up +0.5%653/1234 up +1.5%651/1192 up
Big drop latest session (-1.7% or worse) 59 — +0.2%36/58 up +0.8%37/58 up +1.6%34/57 up +3.2%35/55 up
Big gain Oct 26 (+1.7% or better) 61 — -0.1%25/61 up +0.3%34/60 up +0.8%35/59 up +5.0%40/59 up
Earnings beat 19 -1.7%8/19 up +0.4%11/19 up 0.0%10/19 up +1.2%11/18 up +2.3%9/18 up
Earnings miss 1 -10.9%0/1 up +4.0%1/1 up +5.7%1/1 up +10.6%1/1 up +14.7%1/1 up
52-week high 7 — +0.7%4/7 up -0.2%3/7 up +0.2%4/7 up -2.3%3/6 up
52-week low 2 — +2.2%2/2 up +4.0%2/2 up +8.6%2/2 up +15.1%2/2 up
Crossed above 200-day avg Oct 26 12 — +0.2%7/12 up -0.8%4/11 up +0.2%6/11 up +6.3%8/10 up
Crossed below 200-day avg 12 — +0.3%8/12 up -0.5%5/12 up +1.1%7/11 up +6.8%8/10 up
RSI oversold 13 — +0.3%8/13 up +1.0%8/13 up +6.9%8/13 up +7.1%7/12 up
RSI overbought Oct 28 14 — +0.1%7/14 up +0.6%9/13 up +0.1%7/13 up -1.2%6/13 up
Volume spike 13 — +0.3%8/13 up +0.6%9/13 up +3.4%9/13 up +5.6%8/13 up
Theme selloff hindsight — — — — — —
Theme rally hindsight — — — — — —
Mention spike (Trendy) — — — — — —
Analyst upgrade — — — — — —
Analyst downgrade — — — — — —
Insider buy — — — — — —
Insider unplanned sale — — — — — —

Median gain from the close of the session the event was known, over each holding period; Reaction day (earnings only): the session that first traded on the report, from the close before it; under it, how many of the past events were followed by a gain (12/20 up). "Big" is TDY's own: its worst / best 10% of days over the prior 2 years. Highlighted: happening in the latest session or today, from the live quote.

Volume spike

Volume at least 3x the prior 20 sessions' average.

HoldingEventsMedianUpvs SPYRange of outcomes (worst · 25–75% · median · best)vs S&P 500 stocks (their medians)
1 day 13 +0.30% 8 of 13 -0.22%
1 week 13 +0.58% 9 of 13 +0.19%
1 month 13 +3.42% 9 of 13 +0.72%
1 quarter 13 ≈11 indep. +5.61% 8 of 13 +1.56%

Range of outcomes: all of TDY's volume spikes in the past 5 years, from the worst to the best result over each holding period; the box holds the middle half, the tick is the median. A wide box means the median alone says little. Hover the median for the average.

Volume spike by trend

When it happenedEvents1 day1 week1 month1 quarter
Long trendAbove its 200-day avg now 7 +0.1%7 events vs 0.0% 0.0%7 events vs +0.1% -0.2%7 events vs -0.3% +5.6%7 events vs -0.8%
Below its 200-day avg 4 +1.0%4 events vs +0.2% +0.8%4 events vs +1.0% +6.7%4 events vs +3.6% +4.9%4 events vs +9.5%
Medium trendAbove its 50-day avg now 6 +0.2%6 events vs +0.1% +0.1%6 events vs +0.2% +1.7%6 events vs -0.5% +6.0%6 events vs -0.7%
Below its 50-day avg 6 +1.0%6 events vs +0.2% +1.0%6 events vs +0.6% +3.3%6 events vs +2.2% +1.5%6 events vs +4.3%
Short trendAbove its 20-day avg now 6 +0.2%6 events vs +0.1% +0.1%6 events vs +0.4% +1.7%6 events vs 0.0% +6.0%6 events vs +0.4%
Below its 20-day avg 7 +0.6%7 events vs +0.1% +1.5%7 events vs +0.2% +4.7%7 events vs +1.2% +3.4%7 events vs +3.4%

The same event split by where TDY stood against its 200-, 50- and 20-day averages when it happened (a dip in an uptrend vs a falling knife); "vs" is the plain any-day median in that trend; "now" marks where it stands today. Splitting halves the evidence: each cell shows how many past events it rests on.

Latest volume spikes

EventEntry1 day1 week1 month1 quarter
Jan 21, 2026 Jan 21 @ $621.79 3.1x average volume, +9.8% on the day 0.0% -0.2% +7.5% +5.6%
Oct 22, 2025 Oct 22 @ $543.73 3.0x average volume, -5.2% on the day -1.3% -5.2% -10.9% +12.3%
Jan 22, 2025 Jan 22 @ $511.67 3.1x average volume, +6.5% on the day +0.7% -0.6% -4.0% -12.3%
Nov 25, 2024 Nov 25 @ $477.61 3.1x average volume, -1.3% on the day +0.3% +0.2% -0.2% +7.8%
Sep 20, 2024 Sep 20 @ $432.13 3.4x average volume, -1.0% on the day +0.1% +0.8% +3.4% +7.6%
Apr 24, 2024 Apr 24 @ $362.50 4.8x average volume, -10.9% on the day +4.0% +5.7% +10.6% +14.7%
Nov 30, 2023 Nov 30 @ $402.96 4.2x average volume, +1.0% on the day +1.5% +1.0% +8.8% +6.3%
Jul 26, 2023 Jul 26 @ $387.87 3.7x average volume, -6.5% on the day -2.3% -1.4% +4.7% -0.4%
May 25, 2023 May 25 @ $395.13 3.5x average volume, +0.2% on the day +0.6% +0.6% +2.0% +3.4%
Apr 26, 2023 Apr 26 @ $404.92 3.3x average volume, -2.7% on the day +1.5% +1.5% -2.4% -6.5%
Jan 25, 2023 Jan 25 @ $429.50 3.0x average volume, +4.7% on the day -0.7% 0.0% 0.0% -5.7%
Jul 27, 2022 Jul 27 @ $372.01 4.2x average volume, -7.0% on the day +3.1% +7.3% +5.7% -3.1%
Nov 30, 2021 Nov 30 @ $415.29 3.2x average volume, -3.8% on the day -0.6% +4.2% +4.8% +6.1%

Aftermath: entry is the close of the first session the event was fully known (the same session for price moves, the reaction session for earnings, the next session for Reddit, analyst and insider events, which are dated by day). Repeats within a few sessions count as one event. This is history, not a forecast: in our backtests, how a stock did after its past events did not predict its next one. Not advice.