Stock-Market interleaved practice

Q1. (Subtopic 4.1.4 — Swing trading timeframe; distractor overlap with 4.1.5 positional) Answer: Swing trading. Holding period band is typically 2 days to ~2–3 weeks, capturing a single price "swing"/leg. The tell-tale cues: ignoring intraday 5-min charts (so not scalping/intraday) and evening-only monitoring, but only 6 days held — too short for positional (weeks-to-months). Method-choice why: You must distinguish swing from positional. The "one leg of a multi-week trend" + 6-day hold pins it to swing, not positional (which rides the whole trend over months).

Q2. (Subtopic 4.2.2 — liquid vs illiquid; combined with 4.1.2 scalping demands) Answer: Scalper must choose Stock B (₹480 cr value, 0.03% spread). Spread cost per round trip $\approx$ full spread on position:

• Stock A: $2.1\% \times ₹1,00,000 = ₹2,100$ per round trip $\times 40 = ₹84,000/$day.
• Stock B: $0.03\% \times ₹1,00,000 = ₹30$ per round trip $\times 40 = ₹1,200/$day. Why: Scalping profits per trade are tiny (fractions of a percent), so the 0.03% vs 2.1% spread is the deciding cost. Illiquid stock A's spread alone would obliterate a scalper. Method-choice why: Recognise that scalping's tiny edge forces the liquidity lens — spread cost, not fundamentals.

Q3. (Subtopic 4.1.9 — capital & time requirements per style)

• (a) Scalping → Very high screen-time / fast execution
• (b) Positional → Low screen-time / moderate capital-per-trade
• (c) Intraday → Full-session screen-time / no overnight risk
• (d) Swing → Low-to-moderate screen-time / overnight-gap risk Method-choice why: Each style is defined by its resource footprint; matching forces recall of the trade-off between time-commitment and overnight exposure.

Q4. (Subtopic 4.2.10 — correlation between instruments) Risk: $\rho = +0.92$ means the two instruments move almost together, so being long both is effectively a concentrated single bet — no diversification; a drop hits both at once. Portfolio variance: $\sigma_p^2 = w_1^2\sigma_1^2 + w_2^2\sigma_2^2 + 2w_1 w_2 \rho \sigma_1 \sigma_2$ $= 0.25(4) + 0.25(4) + 2(0.5)(0.5)(0.92)(2)(2) = 1 + 1 + 1.84 = 3.84$ Compare to $\rho=0$ case which gives $2.0$ — correlation inflates risk from 2.0 to 3.84. Method-choice why: The high $\rho$ is the trap; you must apply the portfolio variance formula rather than treating positions as independent.

Q5. (Subtopics 4.1.6 momentum + 4.1.7 mean-reversion contrasted) Answer: Momentum buys strength (new highs, expecting continuation); mean-reversion sells strength / buys weakness (expecting return to average). On the same stock they generate opposite orders — a logical contradiction.

• Momentum favours trending markets (strong directional moves).
• Mean-reversion favours range-bound / sideways markets (oscillation around a mean). Method-choice why: The interleave forces you to see these are regime-dependent opposites, not both-always-valid.

Q6. (Subtopic 4.3.3 — hotkeys & fast order entry; overlaps 4.3.1 execution mechanics) Risk: She unintentionally sends 300 shares (3×100) — over-exposure / accidental position size from fast repeated hotkey fires ("fat-finger" via key repeat). Safeguard: Enable an order confirmation pop-up for market orders, or a max-order-size / rate limit so repeated identical fires within X seconds are blocked. Method-choice why: Speed tools (hotkeys) trade safety for velocity; the fix is a mechanics-level guard.

Q7. (Subtopics 4.2.8 stock screening + 4.2.9 sector leaders/relative strength) Two subtopics: stock screening for trades (price/volume filters) and sector leaders & relative strength (the "up 15% vs sector index" filter). Relative strength: measures whether the stock is outperforming its benchmark/sector — here, beating the sector index by 15% over 20 days flags a sector leader, not just an absolute gainer. Method-choice why: Filter 3 is a comparative metric — recognising "vs sector index" as relative strength (not raw return) is the key distinction.

Q8. (Subtopic 4.1.10 — realistic return expectations) Realistic band: roughly 15–30% per year is considered strong/professional; consistent 40%+ monthly is a red-flag / scam signal. Compounding check: $₹1,00,000 \times (1.40)^{12}$: $1.40^{12} \approx 56.69 \Rightarrow ₹56,69,000 \text{ (≈₹56.7 lakh)}$ This ~5,600% annual return is implausible/unsustainable — hence red flag. Method-choice why: Apply the compounding formula to expose that a plausible-sounding monthly number explodes to an absurd annual figure.

Q9. (Subtopic 4.2.1 — choose between stocks, indices, derivatives; overlaps 4.2.4/4.2.5/4.2.6) Ranking (lowest to highest risk):

1. Cash-market liquid stock (no leverage)
2. Nifty index option buying (loss capped at premium, but time-decay)
3. Currency future USDINR (leveraged, but low-volatility instrument)
4. Commodity future crude (high leverage + high volatility) (Note: option-buying's capped loss places it below leveraged futures for beginners; some rank currency below options — acceptable if justified.) Single subtopic: choosing between stocks, indices & derivatives. Method-choice why: Rank by leverage × volatility × capital, not by asset name alone.

Q10. (Subtopic 4.1.1 — trading vs investing mindset) Answer: The investor focuses on long-term value; the dip to ₹170 is noise, so no action. The trader manages positions by price/risk levels; ₹185 breached a stop or invalidated the setup, forcing an exit. Same price event → opposite action because their time horizons and decision triggers differ: investors act on thesis/value, traders act on price/risk-management rules. Method-choice why: Frame the difference as horizon + trigger, not "who's right."

[
  {"claim": "Q2: Stock A round-trip spread cost per day for 40 trades on 1,00,000 is 84,000", "code": "spread=0.021; pos=100000; trips=40; result = (spread*pos*trips)==84000"},
  {"claim": "Q4: portfolio variance with rho=0.92 equals 3.84", "code": "w=0.5; s2=4; s=2; rho=0.92; var = w**2*s2 + w**2*s2 + 2*w*w*rho*s*s; result = abs(var-3.84)<1e-9"},
  {"claim": "Q8: 40% monthly compounded over 12 months exceeds 50x", "code": "growth=(1.40)**12; result = growth>50"}
]