Rolling Returns
Clean Science and Technology Ltd.
Every 3-year stretch CLEAN has been through — 26 of them, each starting a month after the last. The median returned -14.5% a year, the worst -19.4%, the best -0.2%. A single headline CAGR hides all of that.
Every Holding Period
A rolling window is every possible start date, not one. A five-year window starting in January is a different investment from one starting in February, and over twenty years there are a couple of hundred of them. What follows is the full spread of what each holding period actually produced.
Across 50 separate 1-year holding periods, the median returned -17.5% a year. The worst lost 48.2% a year and the best made 25.2%.
Worst start: May 2025 — -48.2% a year for the 1 years that followed.
Best start: July 2023 — 25.2% a year.
Against the Nifty 50: CLEAN came out ahead in 4.0% of the 50 windows both series cover.
Across 26 separate 3-year holding periods, the median returned -14.5% a year. Every one of them ended in a loss, the mildest at -0.2% a year.
Worst start: March 2023 — -19.4% a year for the 3 years that followed.
Best start: June 2022 — -0.2% a year.
Against the Nifty 50: CLEAN came out ahead in 0.0% of the 26 windows both series cover.
Windows step forward one month at a time and are measured on month-end adjusted closing prices, so dividends are treated as reinvested. Overlapping windows share months by construction — that is what makes the spread a description of this stock's history rather than a sample of independent trials.
Against The Index
Beating an index once is a result. Beating it across most of the periods an investor could have picked is a pattern. Over 3-year windows, CLEAN finished ahead of the Nifty 50 in 0.0% of the 26 periods both series cover.
1-year windows
Ahead in 4.0% of 50 periods.
3-year windows
Ahead in 0.0% of 26 periods.
Each window is compared against the index over the identical calendar months, on the same adjusted basis — not against an assumed rate of return.
How This Is Calculated
Windows step forward one month at a time, so they share most of their months with each other. That is what makes this a description of CLEAN's actual history rather than a set of independent trials — and why the spread should not be read as a probability.
Measured on month-end closing prices adjusted for dividends and splits, so dividends count as reinvested. A window that opened or closed mid-month would differ a little in either direction.
CLEANis in today's Nifty 500 universe. Companies that delisted or collapsed are not on this site at all, so the worst outcome shown here is the worst among the survivors.
Measured on data to 2026-08-31, from 2021-07-01. Full definitions are on our methodology page.
HELP CENTER
Everything you need to know about this page and the data presented.
Over 3 years, Clean Science and Technology Ltd. has been through 26 separate 3 years holding periods — one starting every month. The median returned -14.5% a year, the worst -19.4% and the best -0.2%. A rolling return measures every possible start date instead of one, which is why it answers a question a single headline CAGR cannot: how much the outcome depended on when you happened to buy.
Yes. 100.0% of the 26 3 years periods on record ended below where they started, and the worst of them lost 19.4% a year — the stretch beginning March 2023. The median period returned -14.5% a year.
On this record, yes. 1 year outcomes ranged from -48.2% to 25.2% a year — a spread of 73.4%. 3 years outcomes ranged from -19.4% to -0.2%, a spread of 19.1%. Longer holding periods narrowed the range of results, which is the usual pattern and the reason this page publishes every window rather than one. Narrowing the range is not the same as removing the risk.
In 0.0% of the 26 3 years periods both series cover. Each window is compared against the index over the identical months, not against an assumed index return, so the comparison is a like-for-like record rather than a model.
Windows step forward one month at a time on month-end closing prices adjusted for dividends and stock splits, so dividends are treated as reinvested. A window length is only published once there are at least twelve complete windows behind it — fewer than that describes an anecdote, not a distribution. Overlapping windows share months by construction, which is what makes this a description of the actual history of Clean Science and Technology Ltd. rather than a sample of independent trials. Companies that delisted are not on this site at all, a survivorship bias worth holding in mind.
That is not a question this page answers, and we do not make recommendations. What it can show you is the full range of what every holding period in the listed history of Clean Science and Technology Ltd. actually produced — including the worst ones, which most performance figures leave out. Those are records of what happened, not forecasts. A stock that never had a losing decade may still have one, and holding a single company is a materially different risk from holding an index.
Explore Further
CLEAN drawdowns and all-time high
The worst fall on record, how long recovery took, and how far the price sits below its peak.
CLEAN SIP returns
What a monthly investment would have produced, backtested rather than assumed.
CLEAN overview
Price history, wealth journey and how it compares with the index.
Rolling returns for every stock
Run the same question against any company we track.
ReturnScreener is an educational research platform and is not a SEBI-registered investment adviser. Everything on this page is a record of what historical prices did, not a projection and not a recommendation. Past performance does not guarantee future returns. See our methodology and disclaimer.