Worst Month Best Month
Published 2026-04-06. Last updated 2026-04-17. Editorial review: Know Your PMS editorial standards. By Abhimanyu Kucheria for Know Your PMS.
Topic cluster: Risk & Return Metrics
Headline CAGR hides the journey. This cluster explains drawdowns, volatility, rolling returns, capture ratios, and risk-adjusted measures — with Indian PMS factsheet context.
Pillar guide: Max Drawdown Explained
More in this cluster:
- Max Drawdown Explained
- Volatility Explained
- Rolling Returns Guide
- Calmar Ratio Guide
- Information Ratio Guide
What it means (plain English)
Best month and worst month in track record are empirical tails—single data points with outsized story value. Indian small-cap PMS may show +15% best and -12% worst in same year.
Worst month shows crash participation without annual smoothing. Best month shows concentration luck or beta spike—check if repeatable.
List top 5 worst and top 5 best months vs benchmark. Pattern of repeated bad months = clustering; one-off = event risk.
Don't invest for best month hope; invest if worst month survivable at your allocation size and temperament.
Worked example (Indian PMS scenario)
60-month history: best month +14.2% (Nov 2020 rally), worst month −11.8% (Mar 2020). Range 26 percentage points. Another PMS: best +9%, worst −6%—lower return ceiling but smaller nightmare.
On ₹1 crore, −11.8% is ₹11.8 lakh in 31 days. If worst month coincides with RM reassuring 'long term,' behavioural damage is real. Best month +14% adds ₹14 lakh—often rebalanced away if you take profits elsewhere.
Compare worst/best ratio across peers. Managers with worst month better than benchmark in crashes (e.g., −6% vs Nifty −9%) earn trust regardless of best month rank.
Why it matters for PMS scheme selection
Average returns hide the months you'll remember—worst and best months are the stress test for commitment.
See the complete PMS evaluation framework
- Reveals tail behavior simply
- Complements max drawdown with monthly granularity
- Shows benchmark relative in crisis months
- Sets emotional expectations honestly
- Fast screen before deep diligence
How to interpret it (practical checklist)
- Extract worst 5 monthly returns vs Nifty
- Extract best 5 monthly returns vs Nifty
- Note holdings commentary those months
- Check if worst month recovered next quarter
- Compare worst month across peer PMS
- Translate worst % to rupee loss on ticket
- Ask manager what changed after worst month
Explore related metrics · Compare PMS schemes · Worst Month
Common pitfalls (how this gets misused)
Read our methodology for assumptions and limitations.
- Investing based on best month story
- Ignoring worst month as outlier always
- Worst month without benchmark context
- Single month driving permanent judgment
- Missing corporate action distortions one month
- Worst month on gross not net
Related metrics to review together
Use this guide alongside these metrics to avoid one-number decision-making:
Related guides
- PMS Sharpe Vs Sortino
- Max Drawdown Explained
- Rolling Returns Guide
- Volatility Explained
- Alpha Beta Explained
See also
FAQs
What worst month is unacceptable?
Depends on mandate and your sizing. Large-cap PMS -12% month rare and alarming; small-cap -12% may occur—size accordingly.
Best month proves manager skill?
Often beta or concentration luck—verify repeatability and process, not one month.
Where to find monthly PMS returns?
Factsheets, manager data requests, Know Your PMS—monthly series enables best/worst extraction.
Next: How to compare PMS schemes · Compare schemes · All guides
Frequently asked questions
- What worst month is unacceptable?
- Depends on mandate and your sizing. Large-cap PMS -12% month rare and alarming; small-cap -12% may occur—size accordingly.
- Best month proves manager skill?
- Often beta or concentration luck—verify repeatability and process, not one month.
- Where to find monthly PMS returns?
- Factsheets, manager data requests, Know Your PMS—monthly series enables best/worst extraction.