Rohit Is Down 50% on a Stock and Says "I Just Need It to Come Back Half." The Maths Says Otherwise.
How Much Gain Do You Need to Recover a 30% or 50% Loss on a Stock?
Illustrative Case Study: Rohit and the Stock That Fell by Half
A 50% loss needs a 100% gain to get back to even, and a 30% loss needs about 42.9%. Losses and gains are not symmetric, because the gain is measured on a smaller base. Rohit is a fictional example built to show why "I just need half of it back" is the most expensive sentence in investing.
ABHYUDAYA VIKRAM SINGH
November 2026 · DhanSutra.co.in · Stock Market Last reviewed: November 2026
7 MIN READ
Illustrative case study. Rohit is a fictional example created to explain the maths; he is not a DhanSutra client and this is not a real planning session. All figures are calculated from the stated assumptions. Not investment advice.
To recover a loss of L%, you need a gain of L ÷ (100 − L). A fall of 30% needs +42.9%. A fall of 50% needs +100%. A fall of 80% needs +400%.
At an assumed steady 12% a year, recovering a 50% loss takes about 6.1 years. At 8%, about 9 years. The deeper the hole, the more the maths works against you.
THE NUMBERS AT A GLANCE
ROHIT'S PORTFOLIO (ASSUMED)
₹5,00,000
Three direct stocks bought from tips, in equal parts
ONE STOCK FALLS
−50%
₹1,66,667 invested becomes about ₹83,333
GAIN NEEDED TO RECOVER 30%
+42.9%
Not 30%. The base is now smaller.
GAIN NEEDED TO RECOVER 50%
+100%
The price has to double just to reach where it started
⚠️ THE MOST COSTLY PHRASE
"Bas half wapas aa jaaye"
A 50% rise from the bottom recovers only half of a 50% loss, not all of it
2 ORIGINAL CONCEPTS · FIRST DEFINED HERE
🔵 THE RECOVERY ASYMMETRY
Why a fall and its recovery are never the same percentage
A −50% fall needs a +100% rise, not +50%. The bigger the fall, the more lopsided it gets: −80% needs +400%. Percentage losses shrink your base, so the same percentage gain adds back less money than the loss removed.
Term coined by Abhyudaya Vikram Singh · DhanSutra.co.in
🟡 THE SECOND BET
Why averaging down is a new decision, not a repair
Buying more of a falling stock lowers your average price, but it also puts more money behind the same idea. If the stock recovers, it helps. If it does not, it deepens the loss. Averaging is not a fix for the first mistake. It is a second bet that must stand on its own.
Term coined by Abhyudaya Vikram Singh · DhanSutra.co.in
The Sentence Behind the Screenshot
Rohit is a fictional 28 year old engineer in Hyderabad. Last year he put ₹5,00,000 into three direct stocks recommended in a messaging group, roughly ₹1,66,667 in each. One of them has since fallen by half.
"Sir, bas half wapas aa jaaye toh main nikal jaunga," he says, showing me the screen. It is a reasonable sentence. It is also the one that hides the whole problem.
The Recovery Table
The gain needed to get back to even depends on how far the price has fallen:
FALL IN PRICE
GAIN NEEDED TO RECOVER
−10%
+11.1%
−20%
+25.0%
−30%
+42.9%
−40%
+66.7%
−50% (Rohit)
+100.0%
−60%
+150.0%
−70%
+233.3%
−80%
+400.0%
−90%
+900.0%
Formula: gain needed = fall ÷ (100 − fall). Ignores dividends, taxes and transaction costs.
If Rohit's stock rises 50% from the bottom, a ₹83,333 holding becomes about ₹1,25,000. He is still ₹41,667 below his starting ₹1,66,667. He needs it to double.
A 50% fall needs a 100% rise. The market does not offer an exchange rate between pain and recovery.
How Long Can a Recovery Take?
Time matters as much as percentage. Suppose a portfolio grows at a steady rate after a fall. This is a simplification, since real markets do not rise smoothly:
LOSS TO RECOVER
AT 8% A YEAR
AT 12% A YEAR
−30% (needs +42.9%)
about 4.6 years
about 3.1 years
−50% (needs +100%)
about 9.0 years
about 6.1 years
And that assumes the specific stock behaves like a steady 8 or 12 percent investment, which an individual stock may not. A broad diversified fund has historically had more reason to recover than a single company, but even that is never guaranteed.
The Averaging Question
Rohit asks the obvious next question: "Toh kya main aur kharid loon? Average neeche aa jayega." Here is a simple one stock example with round numbers:
SCENARIO
MONEY INVESTED
BREAK-EVEN PRICE
IF IT RECOVERS TO ₹75
IF IT FALLS TO ₹25
Bought 100 shares at ₹100, now at ₹50. Does nothing.
₹10,000
₹100
−₹2,500
−₹7,500 (−75%)
Buys 100 more at ₹50 (average ₹75)
₹15,000
₹75
₹0 (break-even)
−₹10,000 (−66.7%)
Averaging brings break-even down from ₹100 to ₹75, which needs a 50% rise from ₹50 instead of 100%. But it puts ₹5,000 more at risk. If the stock falls to ₹25, the loss in rupees grows from ₹7,500 to ₹10,000. This is the Second Bet. It can help, and it can hurt, depending entirely on whether the business behind the price deserves more money.
The better question is not "how do I lower my average?" but "if I had no position today and ₹5,000 in cash, would I buy this stock at ₹50?" If the answer is yes, buying is a fresh decision. If the answer is "only to feel better about the old one," it is not.
Where the Real Damage Happens
Rohit's ₹5,00,000 portfolio has not fallen by 50%. Only one third of it did. If the other two stocks are flat, the portfolio is down about ₹83,333, or roughly 17 percent. The pain feels like 50% because attention follows the losing stock. Position size is what separates a bad week from a bad decade: a 50% fall in a ₹1,66,667 position hurts. A 50% fall in a ₹5,00,000 position changes plans.
If You're in Rohit's Situation Today
1
Write down why you bought the stock. If the reason was a tip, a forward or a price chart, say so plainly. If you cannot state the reason, you cannot judge whether it still holds.
2
Separate "the price fell" from "the business got worse". A price fall alone is not a reason to sell or to buy more. Check what changed in earnings, debt and the business itself.Use company filings, not messaging groups.
3
Do not add money just to lower the average. Add only if you would buy at today's price as a fresh decision.The Second Bet must stand on its own.
4
Decide how much you can lose before you buy. Size each position so that even a 50% fall would not change your life plans.A small position can fall by half and still be a small problem.
5
Keep core money in diversified funds. Treat direct stocks as a small share you can afford to lose entirely.Spreading risk is not exciting, but it is the part that works across many years.
In this illustration, a 50% loss needs a 100% gain, which takes about 6.1 years at a steady 12% or 9 years at 8%. Averaging down lowers the break-even but raises the money at risk.
Rohit's Illustrative Decision
Step 1: Rohit writes down why he bought each stock. For the fallen one the answer is "a tip," and he cannot say what the company earns.
Step 2: He does not buy more. He sets a rule that no single stock may be more than a small share of his portfolio and moves the rest of the money into a diversified fund over the next months.
Step 3: He keeps the small remaining position as a review item on a yearly date rather than a daily watch.
MY HONEST TAKE
Percentages feel symmetric, and that is the trap. A fall and a recovery of "the same size" are not the same size, and that is before taxes, costs or time are counted. The deeper the hole, the more the maths asks of you.
This is not an argument against owning stocks. It is an argument for size and reasons: know why you own each one, keep each position small enough to survive a 50% fall, and never buy more only because the price is lower. Do those three things and the recovery table matters much less.
📉
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Frequently Asked Questions
A 100% gain. If a stock falls from ₹100 to ₹50, it must double from ₹50 to ₹100 to reach your starting point. The formula is fall ÷ (100 − fall), so 50 ÷ 50 = 100%.
About 42.9%. A ₹1,00,000 holding that falls 30% becomes ₹70,000, and it needs to rise by ₹30,000, which is 42.9% of ₹70,000.
Because the gain is calculated on the smaller amount that is left after the loss. A smaller base needs a larger percentage to add back the same rupees.
The Recovery Asymmetry is the mismatch between a percentage fall and the percentage rise needed to recover it. A 50% fall needs a 100% rise, and an 80% fall needs a 400% rise. (Term coined by Abhyudaya Vikram Singh, DhanSutra.co.in)
Only if you would buy the stock at today's price as a fresh decision. Averaging lowers your break-even but increases the money at risk. If the business has not recovered, it increases the loss.
The Second Bet is the idea that buying more of a falling stock is a new investment decision, not a repair of the first one. It must stand on its own reasons. (Term coined by Abhyudaya Vikram Singh, DhanSutra.co.in)
It depends on the return afterwards. At a steady 12% a year, recovering a 50% loss takes about 6.1 years, and at 8% about 9 years, assuming no further losses. Real returns are uneven, and an individual stock may never recover.
There is no single answer. The question is whether you would buy it today and whether the reason you bought it still holds. A price fall alone is not a reason to sell or to buy more. This is not personal advice, and a registered adviser can review your own situation.
There is no fixed number. Many planners keep direct stocks to a small share that the investor can afford to lose, and keep the core in diversified funds. The right share depends on your goals, income and risk tolerance.
A diversified fund spreads risk across many companies, so one company's failure is a smaller part of the whole. It can still fall sharply and carries market risk. No investment is guaranteed to recover.
Abhyudaya Vikram Singh
Writes about personal finance at DhanSutra.co.in, a finance blog built on real client case studies. Works with salaried individuals and new parents on practical, behaviour-first financial planning.
This is an illustrative case study. The person described is fictional and all figures are calculated examples.
Abhyudaya Vikram Singh is an AMFI-Registered Mutual Fund Distributor (EUIN: E420092), not a SEBI-Registered Investment Adviser. All content on DhanSutra is for educational purposes only and is not investment advice. Mutual fund investments are subject to market risks; read all scheme-related documents carefully. Please consult a SEBI-registered investment adviser for personalised investment advice.
Know someone waiting for a stock to "just come back"? Send them this. A 50% fall needs a 100% rise.
