IDEX Corporation (IEX)
S&P 500 · Industrials · data since 1989-06-02 · last close 2026-09-09
IDEX Corporation (IEX) monthly returns (%)
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 12.0 | 5.5 | -9.5 | 14.9 | -2.9 | 7.7 | 1.9 | -0.8 | -1.6 | · | · | · |
| 2025 | 7.5 | -13.4 | -6.9 | -3.9 | 4.4 | -3.0 | -6.5 | 0.6 | -1.1 | 5.8 | 1.4 | 2.3 |
| 2024 | -2.3 | 11.5 | 3.4 | -9.7 | -5.1 | -3.6 | 4.0 | -1.0 | 3.9 | 0.4 | 7.5 | -9.3 |
| 2023 | 5.2 | -6.1 | 2.7 | -10.7 | -3.5 | 8.4 | 5.2 | 0.3 | -8.1 | -7.7 | 5.4 | 7.7 |
| 2022 | -8.6 | -10.9 | -0.1 | -1.0 | 1.2 | -5.2 | 15.3 | -3.6 | -0.7 | 11.6 | 6.8 | -3.9 |
| 2021 | -6.3 | 4.8 | 7.3 | 7.1 | -0.4 | -1.2 | 3.3 | -1.2 | -7.6 | 7.8 | 0.9 | 5.2 |
| 2020 | -4.5 | -9.7 | -6.7 | 11.2 | 4.1 | -0.8 | 4.6 | 9.3 | 1.2 | -6.3 | 13.4 | 3.1 |
| 2019 | 9.5 | 4.5 | 5.3 | 3.2 | -2.2 | 12.7 | -2.0 | -2.1 | -0.5 | -4.8 | 4.6 | 5.7 |
| 2018 | 9.0 | -4.7 | 4.2 | -6.2 | 4.1 | -1.6 | 12.9 | -0.2 | -1.7 | -15.6 | 8.3 | -8.1 |
| 2017 | 0.5 | 2.3 | 1.4 | 12.0 | 3.9 | 4.2 | 3.5 | 0.9 | 3.3 | 5.9 | 5.7 | -2.7 |
| 2016 | -4.9 | 3.6 | 10.3 | -0.8 | 1.8 | -1.5 | 9.8 | 4.1 | 0.1 | -7.3 | 8.3 | -3.8 |
| 2015 | -6.7 | 6.8 | -1.9 | -0.7 | 3.0 | 1.7 | -2.9 | -5.5 | -0.7 | 8.1 | 2.7 | -2.8 |
| 2014 | -2.2 | 4.3 | -2.9 | 2.7 | 2.8 | 5.3 | -5.8 | 1.5 | -5.9 | 4.0 | 2.5 | 1.3 |
| 2013 | 7.7 | 2.1 | 4.9 | -2.2 | 5.8 | -2.3 | 11.3 | -0.5 | 9.9 | 6.4 | 3.1 | 3.5 |
| 2012 | 9.7 | 3.2 | 0.8 | 3.3 | -8.3 | -1.9 | -1.6 | 4.5 | 4.8 | 2.3 | 5.7 | 3.5 |
| 2011 | 1.8 | 4.0 | 5.8 | 7.9 | -3.4 | 1.1 | -9.2 | -10.4 | -16.2 | 14.3 | 2.9 | 1.8 |
| 2010 | -9.1 | 9.8 | 6.8 | 2.0 | -9.1 | -6.5 | 13.2 | -7.4 | 19.2 | 2.0 | 3.9 | 4.4 |
| 2009 | -5.9 | -14.6 | 13.2 | 16.0 | -7.5 | 5.2 | 11.6 | -3.1 | 5.7 | 2.1 | 4.2 | 5.1 |
| 2008 | -13.2 | -3.4 | 1.8 | 20.0 | 5.9 | -5.2 | 3.0 | -2.0 | -16.3 | -24.9 | -0.8 | 5.0 |
| 2007 | 9.8 | 0.2 | -2.2 | 3.5 | 7.8 | 2.2 | -5.8 | 6.2 | -5.4 | -2.4 | 0.8 | 1.2 |
| 2006 | 12.2 | 2.7 | 10.4 | -2.3 | -4.8 | -2.4 | -7.6 | -3.4 | 2.5 | 9.3 | 2.2 | -1.1 |
| 2005 | -4.5 | 2.5 | 2.1 | -7.4 | 3.1 | 0.5 | 13.5 | -0.4 | -2.2 | -5.7 | 10.3 | -6.9 |
| 2004 | 0.6 | 2.2 | 2.1 | 9.0 | 0.9 | 8.0 | -6.2 | -4.3 | 10.6 | 9.0 | 8.4 | 1.3 |
| 2003 | -10.4 | -4.9 | 4.6 | 10.3 | 8.3 | 5.1 | 2.5 | 4.8 | -6.0 | 2.4 | 6.2 | 5.3 |
| 2002 | -1.1 | 5.3 | 3.4 | -2.5 | 5.4 | -11.6 | -6.6 | 0.0 | -8.3 | 5.8 | 13.0 | -3.7 |
| 2001 | -8.0 | 5.2 | -9.2 | 8.9 | 3.0 | 5.1 | -4.4 | 10.6 | -22.8 | 5.8 | 4.5 | 13.5 |
| 2000 | -11.1 | -7.9 | 10.1 | 15.3 | 6.8 | -5.5 | 5.0 | -8.0 | -8.0 | 16.0 | 0.2 | 2.5 |
| 1999 | -6.3 | 4.1 | -0.8 | 13.9 | 5.2 | 17.1 | -13.9 | 4.9 | -4.2 | -12.6 | 11.9 | 10.2 |
| 1998 | -3.5 | 2.0 | 6.4 | 0.9 | 1.2 | -6.8 | -17.2 | -26.1 | 26.5 | -2.1 | 4.6 | -9.5 |
| 1997 | -5.5 | 1.5 | -7.4 | 12.2 | 11.9 | 12.3 | 6.8 | -7.8 | 6.2 | -1.9 | -0.9 | 4.7 |
| 1996 | -6.4 | -3.6 | 6.1 | 1.4 | -3.5 | 0.3 | -20.7 | 23.8 | -10.4 | 13.7 | 4.7 | 1.3 |
| 1995 | 0.3 | 3.0 | 3.0 | 12.3 | 1.9 | -1.5 | 31.4 | -8.3 | -11.2 | 6.0 | 8.9 | -0.9 |
| 1994 | 6.3 | -2.0 | -6.4 | 9.0 | 3.6 | 0.3 | -0.9 | 3.8 | -0.3 | 7.4 | -5.5 | 2.7 |
| 1993 | 10.5 | 1.9 | -4.2 | 3.9 | -0.9 | 5.2 | 3.6 | 10.0 | 3.6 | 0.4 | 1.9 | 6.7 |
| 1992 | 17.2 | 4.5 | -1.8 | 3.1 | 1.2 | -4.8 | 0.6 | -14.3 | 5.8 | 8.9 | 5.7 | 13.1 |
| 1991 | 22.4 | 17.3 | -1.6 | 12.5 | 2.2 | 8.7 | -5.3 | -10.6 | -1.6 | 1.6 | -1.6 | 7.2 |
| 1990 | -34.8 | 8.0 | 5.3 | 10.0 | 9.1 | 5.0 | 0.0 | -27.0 | -4.3 | 5.7 | 3.2 | -11.5 |
| 1989 | · | · | · | · | · | -2.6 | 13.2 | -4.7 | 1.6 | -4.8 | 5.9 | 7.1 |
| Avg | -0.4 | 1.1 | 1.6 | 4.8 | 1.5 | 1.3 | 1.6 | -1.8 | -1.1 | 1.8 | 4.6 | 1.7 |
Values in %. Current and first-listed months are partial (greyed).
returnsview.com
IEX seasonality — average by calendar month
IDEX Corporation has monthly history back to 1989. Its strongest month by median is November — positive in 33 of 37 years, median +4.6%, and higher in 9 of the last 9. January is the soft spot, down in 20 of 37 with a median of -2.2%. Across its full record it has closed 61% of months higher, swings ±7.8% in an average month and has fallen 58.7% peak to trough.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg | -0.4% | +1.1% | +1.6% | +4.8% | +1.5% | +1.3% | +1.6% | -1.8% | -1.1% | +1.8% | +4.6% | +1.7% |
| Win rate | 46%/37 | 70%/37 | 62%/37 | 70%/37 | 68%/37 | 53%/38 | 55%/38 | 37%/38 | 41%/37 | 68%/37 | 89%/37 | 68%/37 |
Win rate = share of positive months / sample size.
IEX risk & extremes
IEX drawdown & rolling returns
Percent below the all-time high at each month-end — how far underwater the asset was.
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Frequently asked questions
What was IDEX Corporation's best month?+
IDEX Corporation's strongest completed month on record is July 1995, at +31.45%.
What was IDEX Corporation's worst month?+
Its weakest completed month on record is January 1990, at -34.81%.
Is IDEX Corporation up this year?+
IDEX Corporation is up 27.83% year to date, measured from its last close before 1 January.
What is IDEX Corporation's 1-year return?+
+41.01% over the past twelve months, comparing the latest close with the most recent close on or before the same date a year earlier.
What is IDEX Corporation's biggest drawdown?+
The deepest peak-to-trough fall on record is 58.7%, measured on month-end closes since 1989.
Which calendar month is historically best for IDEX Corporation?+
April has the highest average return across every completed April since 1989. An average is not a forecast.
About IDEX Corporation
IDEX Corporation is an S&P 500 company, an industrials business worth about $17 billion. It measures its order book in years, not quarters — with price receipts on this site going back to 1989. And the long game: $100 at its first close here (1989) would be about $13,181 today.
Did you know?
- Its best month on record was July 1995 at +31.45%; its worst, January 1990 at -34.81%.
- It has closed November in the green 33 out of 37 times — past performance, future shrug.
Trivia for entertainment — the numbers come from our price data; the jokes don't.