Rolling Returns
Oil India Ltd.
Every 15-year stretch OIL has been through — 24 of them, each starting a month after the last. The median returned 12.0% a year, the worst 10.1%, the best 14.8%. 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 192 separate 1-year holding periods, the median returned 6.2% a year. The worst lost 51.6% a year and the best made 319.5%.
Worst start: March 2019 — -51.6% a year for the 1 years that followed.
Best start: August 2023 — 319.5% a year.
Against the Nifty 50: OIL came out ahead in 44.8% of the 192 windows both series cover.
Across 168 separate 3-year holding periods, the median returned 5.2% a year. The worst lost 25.0% a year and the best made 94.7%.
Worst start: October 2017 — -25.0% a year for the 3 years that followed.
Best start: August 2021 — 94.7% a year.
Against the Nifty 50: OIL came out ahead in 34.5% of the 168 windows both series cover.
Across 144 separate 5-year holding periods, the median returned 3.7% a year. The worst lost 13.6% a year and the best made 59.0%.
Worst start: March 2015 — -13.6% a year for the 5 years that followed.
Best start: August 2019 — 59.0% a year.
Against the Nifty 50: OIL came out ahead in 27.8% of the 144 windows both series cover.
Across 120 separate 7-year holding periods, the median returned 3.2% a year. The worst lost 12.0% a year and the best made 36.7%.
Worst start: May 2013 — -12.0% a year for the 7 years that followed.
Best start: August 2017 — 36.7% a year.
Against the Nifty 50: OIL came out ahead in 29.2% of the 120 windows both series cover.
Across 84 separate 10-year holding periods, the median returned 5.2% a year. The worst lost 7.0% a year and the best made 22.9%.
Worst start: October 2010 — -7.0% a year for the 10 years that followed.
Best start: February 2016 — 22.9% a year.
Against the Nifty 50: OIL came out ahead in 36.9% of the 84 windows both series cover.
Across 24 separate 15-year holding periods, the median returned 12.0% a year. Not one of them ended in a loss — the weakest still compounded at 10.1% a year.
Worst start: August 2010 — 10.1% a year for the 15 years that followed.
Best start: September 2009 — 14.8% a year.
Against the Nifty 50: OIL came out ahead in 91.7% of the 24 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 15-year windows, OIL finished ahead of the Nifty 50 in 91.7% of the 24 periods both series cover.
1-year windows
Ahead in 44.8% of 192 periods.
3-year windows
Ahead in 34.5% of 168 periods.
5-year windows
Ahead in 27.8% of 144 periods.
7-year windows
Ahead in 29.2% of 120 periods.
10-year windows
Ahead in 36.9% of 84 periods.
15-year windows
Ahead in 91.7% of 24 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 OIL'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.
OILis 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 2009-09-01. Full definitions are on our methodology page.
HELP CENTER
Everything you need to know about this page and the data presented.
Over 15 years, Oil India Ltd. has been through 24 separate 15 years holding periods — one starting every month. The median returned 12.0% a year, the worst 10.1% and the best 14.8%. 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. 23.8% of the 84 10 years periods on record ended below where they started, and the worst of them lost 7.0% a year — the stretch beginning October 2010. The median period returned 5.2% a year.
-13.6% a year, for the five years beginning March 2015. For contrast the best 5 years returned 59.0% a year, starting August 2019, and the median across all 144 periods was 3.7%. The gap between those two numbers is the part of the outcome that came down to timing rather than to the company.
On this record, yes. 1 year outcomes ranged from -51.6% to 319.5% a year — a spread of 371.1%. 15 years outcomes ranged from 10.1% to 14.8%, a spread of 4.7%. 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 91.7% of the 24 15 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 Oil India 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 Oil India 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
OIL drawdowns and all-time high
The worst fall on record, how long recovery took, and how far the price sits below its peak.
OIL SIP returns
What a monthly investment would have produced, backtested rather than assumed.
OIL 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.