Tandem Diabetes Care Inc. drawdown: 94.5% below the all-time high (price)
Tandem Diabetes Care Inc. is 94.5% below its all-time high, set Jan 10, 2014 (as of market close, Oct 20, 2026), measured on price alone — dividends are not included, the convention headlines and crash histories use. 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
- −94.5%
- 5.5% of ATH
- All-time high
- $299.8
- Jan 10, 2014
- Time below the high
- 12.8 yrs
- since Jan 10, 2014
- Worst-ever drawdown
- −99.3%
- Nov 3, 2017
- Longest underwater
- 12.8 yrs
- between all-time highs
- Today's level first reached
- Nov 14, 2013
- 12.9 yrs ago
- Last time this deep
- never before
- no prior −94.5% episode
% of all-time high since 2013: price#
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.
The deepest drawdowns on record#
Every decline of 15% or more from an all-time high (price basis), deepest first.
| Peak | Trough | Depth | Peak → trough | Recovered by | Underwater |
|---|---|---|---|---|---|
| Jan 10, 2014 | Nov 3, 2017 | −99.3% | 3.8 yrs | not yet | 12.8 yrs+ |
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 2013: how far Tandem Diabetes Care Inc. stood below its all-time high, and the total return over the following 1, 5 and 10 years.
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 Tandem Diabetes Care Inc. from its all-time high?
- Tandem Diabetes Care Inc. is currently 94.5% below its all-time high, set Jan 10, 2014 (as of market close, Oct 20, 2026). Prices only, the convention headlines use; with dividends reinvested the gap is usually smaller.
- What was the biggest Tandem Diabetes Care Inc. drawdown ever?
- The deepest decline on record in our data (since 2013) took Tandem Diabetes Care Inc. 99.3% below its prior high, bottoming Nov 3, 2017. The table on this page lists every major episode with its peak, trough and recovery date.
Methodology & related#
Daily data since -1 from TNDM; no free deep history exists for Tandem Diabetes Care Inc. — 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.