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SMCI

Super Micro Computer, Inc. · Technology · Computer Hardware
TECHSellMAHold · 1ZACKSSell R500#2 today TARGET+19%
$35.57 +9.55% today · -0.59% 1W
Oct 21 close or latest
After hours $35.55 -0.06% ·
ReadoutWhy it movedthe Oct 21 session

Up on Q1 revenue guidance raise

Assembled from Wallsti's own signals and the session's headlines and filings read by AI (Claude); it can misread, so the sources are linked.
Latest session Big gain +9.6% on the day (line +7.5%)
After its 78 big gains in the past 5 years, SMCI was higher a week later 36 times out of 78; half the outcomes fell between -6.8% and +7.3%. History, not a forecast.
See the aftermath
Latest session Crossed above 200-day avg +9.6% on the day
After its 5 crosses above the 200-day average in the past 5 years, SMCI was higher a day later 4 times out of 5; half the outcomes fell between +2.3% and +4.1%. History, not a forecast.
See the aftermath
Latest session Mention spike (Trendy) 75 mentions vs 5.6/day the week before
After its 48 mention spikes in the past 5 years, SMCI was higher a week later 18 times out of 48; half the outcomes fell between -8.2% and +5.9%. History, not a forecast.
See the aftermath
Latest session Theme rally AI servers & data centers peers +3.5 pts vs SPY; the stock +9.6%

After each kind of event

EventEventsReaction day1 day1 week1 month1 quarter
Any day 1,254 — +0.1%631/1253 up +0.6%670/1249 up +3.0%683/1233 up +9.0%740/1191 up
Big drop (-6.0% or worse) 71 — +0.5%39/71 up +0.6%37/71 up +4.0%38/70 up +10.4%47/68 up
Big gain latest session (+7.7% or better) 79 — 0.0%38/78 up -2.1%36/78 up +3.2%43/78 up +8.5%49/74 up
Earnings beat 15 +10.2%11/15 up +0.8%8/15 up -2.7%7/15 up +6.3%11/15 up +4.3%9/14 up
Earnings miss 4 -14.8%1/4 up +0.8%2/4 up -0.6%2/4 up -15.5%1/4 up -8.4%2/4 up
52-week high 8 — +2.0%6/8 up +1.5%6/8 up +5.0%5/8 up +40.1%7/8 up
52-week low 2 — +8.7%2/2 up -1.7%1/2 up +66.0%2/2 up +80.3%2/2 up
Crossed above 200-day avg latest session 6 — +2.9%4/5 up -2.7%2/5 up -7.6%2/5 up -8.3%2/4 up
Crossed below 200-day avg Oct 16 6 — -0.5%3/6 up -9.8%1/5 up -17.5%1/5 up -18.2%1/5 up
RSI oversold 7 — -1.6%3/7 up -4.3%2/7 up -1.3%3/7 up -19.4%2/7 up
RSI overbought 16 — -1.6%5/16 up -4.2%7/16 up -0.4%7/16 up +4.3%8/15 up
Volume spike 26 — +0.7%15/26 up -5.1%9/26 up +6.0%15/26 up +6.3%18/25 up
Theme selloff hindsight 54 — -1.3%20/54 up -0.9%26/54 up +4.7%28/53 up -4.9%23/49 up
Theme rally latest session hindsight 72 — -0.6%32/71 up -0.4%35/71 up +6.1%38/71 up -0.6%31/66 up
Mention spike (Trendy) latest session 49 — -1.0%19/48 up -3.5%18/48 up 0.0%24/48 up -4.4%21/47 up
Analyst upgrade 1 — +5.2%1/1 up -1.8%0/1 up +30.8%1/1 up -7.4%0/1 up
Analyst downgrade — — — — — —
Insider buy — — — — — —
Insider unplanned sale 1 — -1.3%0/1 up +2.5%1/1 up -12.4%0/1 up -9.4%0/1 up

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 SMCI'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.

HoldingEventsMedianUpvs SPYRange of outcomes (worst · 25–75% · median · best)vs S&P 500 stocks (their medians)
1 day 71 -0.59% 32 of 71 -0.58% —
1 week 71 -0.38% 35 of 71 -0.21% —
1 month 71 ≈38 indep. +6.07% 38 of 71 +3.75% —
1 quarter 66 ≈15 indep. -0.59% 31 of 66 -4.89% —

Range of outcomes: all of SMCI'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 happenedEvents1 day1 week1 month1 quarter
Long trendAbove its 200-day avg now 38 +0.1%37 events vs +0.2% +3.0%37 events vs +1.1% +9.3%37 events vs +4.2% -6.6%33 events vs +9.9%
Below its 200-day avg 34 -0.9%34 events vs -0.4% -2.9%34 events vs -0.1% -1.7%34 events vs -0.4% +3.6%33 events vs +2.9%
Medium trendAbove its 50-day avg 41 -0.6%41 events vs 0.0% +0.4%41 events vs +0.1% -0.4%41 events vs -1.8% -1.2%37 events vs +10.4%
Below its 50-day avg now 31 -0.6%30 events vs +0.1% -1.5%30 events vs +1.7% +10.4%30 events vs +6.8% -0.4%29 events vs +7.2%
Short trendAbove its 20-day avg 40 -0.6%40 events vs 0.0% +1.1%40 events vs +0.2% +9.6%40 events vs +1.3% -2.8%36 events vs +6.7%
Below its 20-day avg now 32 -0.4%31 events vs +0.1% -1.9%31 events vs +1.7% -4.2%31 events vs +4.3% +2.3%30 events vs +13.9%

The same event split by where SMCI 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

EventEntry1 day1 week1 month1 quarter
Oct 21, 2026 Oct 21 @ $35.57 AI servers & data centers peers +3.5 pts vs SPY; the stock +9.6% … … … …
Sep 16, 2026 Sep 16 @ $36.85 AI servers & data centers peers +3.1 pts vs SPY; the stock +3.4% +9.5% +12.5% -4.8% …
Sep 3, 2026 Sep 3 @ $37.87 AI servers & data centers peers +2.6 pts vs SPY; the stock +2.4% +4.5% +5.9% +14.0% …
Aug 26, 2026 Aug 26 @ $37.39 AI servers & data centers peers +2.9 pts vs SPY; the stock -2.8% +2.9% -1.0% +15.7% …
Aug 12, 2026 Aug 12 @ $37.61 AI servers & data centers peers +4.4 pts vs SPY; the stock +19.0% +4.1% -2.7% +6.6% …
Jul 31, 2026 Jul 31 @ $28.40 AI servers & data centers peers +2.5 pts vs SPY; the stock +2.4% +0.8% +9.6% +31.3% …
Jul 23, 2026 Jul 23 @ $31.20 AI servers & data centers peers +2.5 pts vs SPY; the stock +2.1% -3.5% -11.1% +19.4% +14.0%
Jul 9, 2026 Jul 9 @ $28.24 AI servers & data centers peers +2.8 pts vs SPY; the stock +0.2% +0.2% -12.6% +10.2% +59.1%
Jun 30, 2026 Jun 30 @ $29.33 AI servers & data centers peers +4.3 pts vs SPY; the stock +4.2% -5.7% -4.0% -5.5% +39.9%
Jun 22, 2026 Jun 22 @ $35.46 AI servers & data centers peers +3.7 pts vs SPY; the stock +15.7% -6.0% -20.6% -13.8% +16.2%
Jun 11, 2026 Jun 11 @ $31.97 AI servers & data centers peers +3.1 pts vs SPY; the stock +9.2% -4.7% -4.1% -13.5% +25.4%
Jun 2, 2026 Jun 2 @ $50.17 AI servers & data centers peers +4.4 pts vs SPY; the stock +7.0% -5.5% -19.0% -45.7% -26.8%
May 22, 2026 May 22 @ $35.58 AI servers & data centers peers +5.8 pts vs SPY; the stock +6.3% +4.3% +31.8% -8.8% -1.2%
May 8, 2026 May 8 @ $35.37 AI servers & data centers peers +3.0 pts vs SPY; the stock +5.2% -5.2% -12.2% +14.9% -11.1%
Apr 30, 2026 Apr 30 @ $27.40 AI servers & data centers peers +2.6 pts vs SPY; the stock +4.1% -1.1% +22.7% +71.1% +3.6%

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.