Day trader
Also written Day trading · Intraday trader · Day traders
A trader whose entire investment and disinvestment cycle is completed within a single day, taking no position home overnight.
In plain language
The workbook opens by separating investing from trading, and then splits trading into narrower kinds.
A trader earns the difference between a buying price and a selling price. The value of the business does not have to change at all.
A day trader is the fastest version of that. Buy and sell are both finished inside one day. Nothing is carried overnight.
So a day trader cannot be waiting for a company's results to prove them right. There is no time. What they work with instead is price movement within the session.
How it works
The definition, in full. Section 4.1 builds a small taxonomy and the day trader is its narrowest branch. A trader "attempts to earn profit by earning a spread between selling price and buying price without a necessary change in the underlying value of the asset." A trader's time horizon "is usually short," and the workbook puts a bound on it: traders profit from price anomalies "which would be corrected within a period upto 3-6 months."
Inside that, 3 narrower labels:
| Label | What defines it |
|---|---|
| Speculator | Bets on short-term movement of asset prices "based on their calculated guess" |
| Chartist | Depends "on the price patterns and some related charting techniques" |
| Day trader | "If their entire investment and disinvestment cycle is 1 day, they are day traders" |
The 3 are not exclusive. A day trader who reads charts is also a chartist, and one betting on a direction is also a speculator.
What a day trader actually uses. Chapter 15 supplies the tools, and they are all short-horizon. Section 15.4.3 says a tertiary trend — days to weeks — is what "helps traders fine-tune their entry and exit points," and names 5-day, 10-day and 20-day EMAs, RSI, the Stochastic Oscillator, candlestick patterns and "support and resistance levels, especially intraday or weekly pivots." Section 15.7.3 adds that pivot points, calculated from the previous period's high, low and close, are "generally used in intraday," and that the volume weighted average price (VWAP) is "a dynamic support/resistance price level often used by intraday traders."
Why the chart type matters. Section 15.2.1 notes that a line chart "does not capture intraday price movements i.e., open, high, low." For a day trader, that is the whole of the information — so a line chart is close to useless and a candlestick or bar chart is essential.
A worked example
Illustrative. Rohit trades a single large-cap stock on one session. It opens at Rs 1,482.
| Time | Action | Price | Quantity |
|---|---|---|---|
| 9:35 am | Buy | Rs 1,478 | 2,000 |
| 11:10 am | Sell | Rs 1,491 | 2,000 |
| 1:40 pm | Buy | Rs 1,486 | 2,000 |
| 3:15 pm | Sell | Rs 1,480 | 2,000 |
Trade 1 : (1,491 − 1,478) × 2,000 = + Rs 26,000
Trade 2 : (1,480 − 1,486) × 2,000 = − Rs 12,000
Net before costs = + Rs 14,000
At close he holds nothing. His investment and disinvestment cycle for both positions was 1 day, so he is a day trader on the workbook's definition.
Nothing about the company changed in those 6 hours. Its revenue, its margins and its competitive position on the 3:30 pm bell were identical to the 9:15 am bell. Rohit earned Rs 14,000 from a spread, which is precisely the workbook's description of trading rather than investing.
Now the cost side, which is why the workbook flags overtrading as a risk. At 4 trades of about Rs 29.7 lakh each, total turnover for the day is roughly Rs 1.19 crore. Even at a combined 0.05% of turnover in brokerage, taxes and charges, that is about Rs 5,900 of cost — over 40% of the gross gain, on a day that went well.
Why NISM asks about it
Section 4.1 (What is Investing?) opens the paper with the investor-versus-trader distinction and the 3 narrower labels. Chapter 15 then supplies the tools a day trader uses, in 15.4.3 on tertiary trends and 15.7.3 on pivot points and VWAP.
The question is a classification one: a scenario describes a market participant and asks whether they are an investor, a trader, a speculator, a chartist or a day trader. The 1-day cycle is the only thing that identifies a day trader, so the scenario will turn on whether the position was carried overnight.
Common exam traps
- The 1-day cycle is the definition. Not the use of leverage, not the instrument, not the size. A trader who holds for 3 days is a trader but not a day trader.
- A day trader is a trader, and can also be a speculator and a chartist at the same time. The 3 labels describe different things — horizon, motive and method — so they overlap.
- The workbook's 3-6 month window describes traders generally, not day traders. Do not attach it to the day-trading definition.
- Trading is defined by the reason, not only by the speed. The workbook's point is that a trader does not need the asset's underlying value to change at all. A quick sale by someone who bought on fundamentals is not day trading.
- Overtrading is a named risk. Section 15.4.3 warns that traders "may be tempted to overtrade based on minor fluctuations, increasing transaction costs and risk."
- A line chart is the wrong tool here, since it plots closing prices only and hides the intraday range a day trader lives on.
Check yourself
1.A market participant completes his entire investment and disinvestment cycle within a single day. The workbook would term him a:
- a)Chartist
- b)Speculator
- c)Day trader
- d)Passive investor
Show the answer
Answer: (c) Day trader
The workbook is explicit: if their entire investment and disinvestment cycle is 1 day, they are day traders.
Why not the others? A chartist is defined by depending on price patterns and related charting techniques — the stem says nothing about charts. A speculator is defined by betting on short-term price movement based on a calculated guess — again, not the feature described here. A passive investor buys a broad set of securities representing an asset class and does not trade individual names at all.
All of these participants are traders in the wide sense. The exam expects the most specific label the stem supports, and the stem hands you the one-day cycle.
2.An intraday trader works out the day’s support and resistance levels from the previous session’s high, low and close. In the workbook’s table of support and resistance types, what is he using?
- a)Psychological levels
- b)Fibonacci levels
- c)Pivot points
- d)Moving-average levels
Show the answer
Answer: (c) Pivot points
The workbook’s table: pivot points are "calculated from previous period’s high, low, close" and are "generally used in intraday trading". That is exactly the trader’s method.
Psychological levels are "round numbers (e.g., Rs. 1,000, Rs. 10,000)" that "often act as barriers" — the example given is Nifty 25,000. Fibonacci levels are "derived from Fibonacci retracement ratios (23.6%, 38.2%, 61.8%)", measured from a swing high or low, not from one session’s prices. Moving-average levels are "dynamic support/resistance based on averages (e.g., 50-day MA)", illustrated by "price bouncing off 50 DMA".
The table’s other two types are horizontal (flat levels where price repeatedly reverses) and trendline (diagonal lines connecting higher lows or lower highs).
Where this is taught
Free preparation for NISM Series XVRelated terms
- Active investingAn investing approach that involves picking individual securities to try to beat the return of the broader asset class, rather than simply tracking it.
- Bar chartA technical-analysis chart showing each period's Open, High, Low and Close as a single vertical bar with side ticks — used to study price range and volatility.
- ChartistA trader who bases buy and sell decisions on historical price and volume patterns and their tendency to repeat, rather than on a company's underlying financial performance.
- Line chartThe simplest price chart: a single continuous line joining closing prices over time, good for reading a trend quickly but blind to the open, high and low.
- Technical analysisForecasting price direction from past price and volume alone, on the assumption that everything worth knowing about a company is already in its price.
- Tertiary trendThe smallest of Dow Theory's three trends — a short-term move of a few days to a few weeks, often running against the primary or secondary trend.
- TraderA market participant who profits from the spread between buying and selling price without needing the underlying value to change — motivated by price patterns, not by a company's fundamentals.