ON
After each kind of event
| Event | Events | Reaction day | 1 day | 1 week | 1 month | 1 quarter |
|---|---|---|---|---|---|---|
| Any day | 1,255 | — | +0.1%631/1254 up | +0.2%641/1250 up | +0.5%628/1234 up | +0.4%608/1192 up |
| Big drop latest session (-4.1% or worse) | 60 | — | +0.3%31/59 up | +0.7%31/59 up | -2.1%25/57 up | -6.9%23/53 up |
| Big gain Oct 27 (+4.1% or better) | 61 | — | -1.3%22/61 up | +0.1%30/60 up | -0.9%28/60 up | -0.2%29/58 up |
| Earnings beat | 18 | +1.4%12/17 up | +0.8%12/18 up | +1.4%11/18 up | +5.0%12/18 up | +6.0%11/17 up |
| Earnings miss | 1 | -8.2%0/1 up | +1.9%1/1 up | +10.4%1/1 up | -8.9%0/1 up | -5.1%0/1 up |
| 52-week high | 6 | — | +1.7%3/6 up | +3.1%6/6 up | +5.4%4/6 up | +6.5%4/6 up |
| 52-week low | 4 | — | -3.1%0/4 up | -1.8%1/4 up | -1.2%2/4 up | +11.0%2/4 up |
| Crossed above 200-day avg | 13 | — | -1.4%4/13 up | -3.0%3/13 up | -0.8%6/12 up | -8.8%5/12 up |
| Crossed below 200-day avg | 15 | — | +0.7%9/15 up | +0.4%9/15 up | -0.5%7/14 up | -8.3%5/13 up |
| RSI oversold | 6 | — | -1.4%3/6 up | -0.3%3/6 up | +0.3%3/6 up | +7.7%4/6 up |
| RSI overbought | 13 | — | -0.8%5/13 up | -0.2%6/13 up | +2.2%7/13 up | -6.8%3/13 up |
| Volume spike | 9 | — | -1.5%1/9 up | -1.8%3/9 up | +4.5%5/9 up | +4.9%7/9 up |
| Theme selloff latest session hindsight | 56 | — | +1.2%34/55 up | +0.1%28/55 up | -1.8%24/53 up | -5.7%21/49 up |
| Theme rally Oct 26 hindsight | 71 | — | -0.5%33/71 up | -0.3%32/70 up | +0.2%35/70 up | -0.2%34/68 up |
| Mention spike (Trendy) | 20 | — | +0.2%10/20 up | -1.2%8/20 up | -0.6%9/20 up | +5.2%13/20 up |
| Analyst upgrade | 1 | — | +0.5%1/1 up | +20.6%1/1 up | +60.6%1/1 up | +28.4%1/1 up |
| Analyst downgrade | 1 | — | -0.8%0/1 up | -4.3%0/1 up | -17.7%0/1 up | +62.6%1/1 up |
| 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 ON'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.
Theme rally
The stock's theme peers (equal weight, without the stock) beat the S&P 500 by one of their best 10% gaps of the prior 2 years, and by at least 2 pts.
Hindsight: the history below is judged with today's theme lists, which were set on Oct 7, 2026 and hold the stocks that belong to each story now, including ones that didn't back then. So there is no S&P 500 comparison. The clean record starts on Oct 7, 2026: 1 theme rally since then; its record shows once there are 3.
| Holding | Events | Median | Up | vs SPY | Range of outcomes (worst · 25–75% · median · best) | vs S&P 500 stocks (their medians) |
|---|---|---|---|---|---|---|
| 1 day | 71 | -0.54% | 33 of 71 | -0.64% |
-9%
+10%
|
— |
| 1 week | 70 | -0.34% | 32 of 70 | -0.65% |
-15%
+19%
|
— |
| 1 month | 70 ≈41 indep. | +0.17% | 35 of 70 | -1.22% |
-29%
+56%
|
— |
| 1 quarter | 68 ≈15 indep. | -0.22% | 34 of 68 | -7.40% |
-44%
+104%
|
— |
Range of outcomes: all of ON's theme rallies 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.
Theme rally by trend
| When it happened | Events | 1 day | 1 week | 1 month | 1 quarter |
|---|---|---|---|---|---|
| Long trendAbove its 200-day avg | 40 | -0.6%40 events vs -0.1% | -0.6%40 events vs -0.4% | -0.5%40 events vs -1.6% | +1.5%40 events vs +5.0% |
| Below its 200-day avg now | 31 | +0.1%31 events vs +0.2% | -0.1%30 events vs +0.2% | +0.9%30 events vs +1.1% | -4.3%28 events vs -3.2% |
| Medium trendAbove its 50-day avg | 44 | -0.9%44 events vs -0.2% | -0.1%44 events vs -0.5% | -1.0%44 events vs -2.8% | +0.1%44 events vs -0.1% |
| Below its 50-day avg now | 27 | +0.6%27 events vs +0.3% | -0.7%26 events vs +0.7% | +2.7%26 events vs +2.2% | -1.4%24 events vs +2.9% |
| Short trendAbove its 20-day avg | 43 | -0.7%43 events vs -0.1% | -0.1%43 events vs +0.1% | +1.1%43 events vs -0.4% | +1.0%43 events vs +0.2% |
| Below its 20-day avg now | 28 | +0.4%28 events vs +0.3% | -0.7%27 events vs +0.3% | -0.4%27 events vs +0.8% | -9.0%25 events vs +0.6% |
The same event split by where ON 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 theme rallies
| Event | Entry | 1 day | 1 week | 1 month | 1 quarter | |
|---|---|---|---|---|---|---|
| Oct 26, 2026 | Oct 26 @ $74.06 | Semiconductors peers +2.6 pts vs SPY; the stock +2.5% | +6.2% | … | … | … |
| Sep 17, 2026 | Sep 17 @ $68.30 | Semiconductors peers +2.5 pts vs SPY; the stock +2.5% | +2.5% | +7.1% | +5.4% | … |
| Sep 4, 2026 | Sep 4 @ $74.38 | Semiconductors peers +3.2 pts vs SPY; the stock +1.0% | -4.4% | -3.7% | +16.0% | … |
| Jul 30, 2026 | Jul 30 @ $83.74 | Semiconductors peers +5.1 pts vs SPY; the stock +6.2% | -2.5% | -6.5% | -13.3% | -9.7% |
| Jul 21, 2026 | Jul 21 @ $91.06 | Semiconductors peers +4.2 pts vs SPY; the stock +5.0% | +1.4% | -7.3% | -15.9% | -19.7% |
| Jul 9, 2026 | Jul 9 @ $97.87 | Semiconductors peers +2.4 pts vs SPY; the stock +4.3% | -2.0% | -10.0% | -17.1% | -15.7% |
| Jun 30, 2026 | Jun 30 @ $94.54 | Semiconductors peers +2.4 pts vs SPY; the stock +6.7% | +0.1% | -0.8% | -11.4% | -19.7% |
| Jun 11, 2026 | Jun 11 @ $115.96 | Semiconductors peers +5.1 pts vs SPY; the stock +5.3% | +0.7% | +4.9% | -19.2% | -34.3% |
| Jun 2, 2026 | Jun 2 @ $128.64 | Semiconductors peers +5.0 pts vs SPY; the stock +6.4% | +4.1% | -9.0% | -29.1% | -43.5% |
| May 20, 2026 | May 20 @ $110.21 | Semiconductors peers +3.2 pts vs SPY; the stock +4.0% | -0.5% | +12.3% | +19.4% | -32.2% |
| May 8, 2026 | May 8 @ $103.20 | Semiconductors peers +4.0 pts vs SPY; the stock +2.6% | +3.9% | +9.6% | +13.4% | -22.7% |
| Apr 30, 2026 | Apr 30 @ $100.81 | Semiconductors peers +2.1 pts vs SPY; the stock +2.0% | +2.2% | -0.2% | +19.9% | -19.0% |
| Apr 22, 2026 | Apr 22 @ $88.99 | Semiconductors peers +2.6 pts vs SPY; the stock +2.4% | +9.9% | +11.1% | +23.2% | +1.3% |
| Apr 8, 2026 | Apr 8 @ $68.38 | Semiconductors peers +2.7 pts vs SPY; the stock +7.2% | +0.2% | +5.9% | +47.1% | +43.1% |
| Mar 25, 2026 | Mar 25 @ $63.10 | Semiconductors peers +2.5 pts vs SPY; the stock +1.2% | -3.5% | -1.4% | +55.9% | +88.2% |
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.