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$65.61-1.55%
as of market close, Sep 18, 2026
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Alliant Energy Corporation drawdown: 15.9% below the all-time high

Alliant Energy Corporation is 15.9% below its all-time high, set Jul 2, 2026 (as of market close, Sep 18, 2026). The chart shows every day as a percentage of the highest level reached up to that point: 100% means a fresh record, everything below is a drawdown.

Below all-time high
−15.9%
84.1% of ATH
All-time high
$78.03
Jul 2, 2026
Time below the high
3 mo
since Jul 2, 2026
Worst-ever drawdown
−60.7%
Nov 15, 2002
Longest underwater
13.3 yrs
between all-time highs
Today's level first reached
Mar 3, 2025
1.5 yrs ago
Last time this deep
Jul 23, 2024
in a previous episode

% of all-time high since 1988#

The classic underwater chart (drawdown curve), drawn as % of the all-time high — 100% is a fresh record, everything below it is time spent underwater. Basis and range are in the URL, so a particular view is a link.

Basis
Range
All-time high = 100%40%60%80%
LNT close · log10.0020.0050.00
19901995200020052010201520202025

The deepest drawdowns on record#

Every decline of 15% or more from an all-time high (price basis), deepest first.

PeakTroughDepthPeak → troughRecovered byUnderwater
Apr 14, 1993Nov 15, 2002−60.7%9.6 yrsAug 3, 200613.3 yrs
Apr 25, 2007Mar 9, 2009−55.3%1.9 yrsJun 18, 20125.1 yrs
Feb 18, 2020Mar 23, 2020−33.5%34 daysAug 5, 202118 mo
Apr 6, 2022Oct 2, 2023−29.0%18 moMar 3, 20252.9 yrs
Jan 29, 2015Sep 4, 2015−22.4%7 moMar 8, 201613 mo
Jan 3, 1990Sep 14, 1990−19.1%8 moDec 7, 199011 mo
Nov 14, 2017Feb 8, 2018−17.8%3 moNov 12, 201812 mo
Jul 2, 2026Sep 18, 2026−15.9%3 monot yet3 mo+

Price basis (no dividends) — the convention crash histories use. With dividends reinvested, recoveries arrive years earlier; switch the basis on the chart above to see it.

Drawdown vs what came next#

One dot per month since 1988: how far Alliant Energy Corporation stood below its all-time high, and the total return over the following 1, 5 and 10 years.

1950–19992000–today

Read this with survivorship bias in mind: a single asset's history is one surviving sample, so past recoveries here say little about the odds ahead. Monthly windows also overlap heavily (they are not independent samples). Not investment advice.

FAQ#

How far is Alliant Energy Corporation from its all-time high?
Alliant Energy Corporation is currently 15.9% below its all-time high, set Jul 2, 2026 (as of market close, Sep 18, 2026). Prices only, the convention headlines use; with dividends reinvested the gap is usually smaller.
What was the biggest Alliant Energy Corporation drawdown ever?
The deepest decline on record in our data (since 1988) took Alliant Energy Corporation 60.7% below its prior high, bottoming Nov 15, 2002. The table on this page lists every major episode with its peak, trough and recovery date.

Methodology & related#

Daily data since -1 from LNT; no free deep history exists for Alliant Energy Corporation — for a 150-year drawdown record see the S&P 500 drawdown page. The price basis excludes dividends; the total-return basis reinvests them; the real basis additionally deflates by CPI. See also returns by year. Past performance does not predict future returns; not investment advice.

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