Adjustment Case Studies — Nifty and Bank Nifty Real Examples

Case Study 1 - Long Nifty Call Converted to Bull Call Spread 

Context: January 2024. Nifty at 21,700 following a pre-Budget correction from 22,500. A trader entered a long 22,000 CE for the February monthly expiry at Rs 165 (1.4% OTM), expecting a post-Budget rally. 18 sessions to expiry. Three weeks pass: the Budget is announced (neutral -- no major positive surprise). Nifty moves from 21,700 to 21,900 -- a 200-point advance but still 100 points below the 22,000 strike. The call has decayed from Rs 165 to Rs 82 (50% loss from time decay minus the 200-point gain). 10 sessions remain. 

Decision tree assessment: Level 1.1 -- Stop triggered? 50% time-decay loss reached for long options. YES. Action: close. Wait -- the underlying IS moving in the right direction (up 200 points). Reassess: the 50% loss trigger for long options requires BOTH time decay AND adverse movement. Here: time decay has eroded the option but the underlying has moved in the right direction. The thesis (post-Budget rally) is partially validated (Nifty rising, heading toward the target). Level 1.2 does not apply (directional long, no short strike to approach). Level 2.1: Thesis valid? YES -- Nifty is rising. Level 2.2: EV-positive adjustment? Convert to bull call spread: sell 22,500 CE at Rs 42. Net spread cost: Rs 165 - Rs 42 = Rs 123. New break-even: 22,123. Original break-even: 22,165. Improvement: Rs 42 per unit. Level 2.3: First adjustment? YES. Level 3: Structure adjustment (conversion to spread). Execute: sell 22,500 CE at Rs 42. Outcome: Nifty closes February at 22,212. Bull call spread intrinsic: Rs 212 - Rs 123 = Rs 89 per unit gain. Total outcome: Rs 89 x 75 = Rs 6,675 per lot gain -- a positive outcome from a position that was at 50% loss before the conversion.

Case Study 2 - Iron Condor Wing Roll -- Nifty Rising Market 

Context: March 2024. Nifty at 22,100. Monthly iron condor entered: short 22,700 CE, long 23,200 CE, short 21,500 PE, long 21,000 PE. Net credit Rs 32. Ten sessions into the cycle, Nifty rises to 22,550 (150 points from the short call at 22,700). Short 22,700 CE has risen from Rs 22 to Rs 58 (2.6x -- stop triggered at 1.5x = Rs 33). Level 1.1: Stop triggered? YES (Rs 58 > Rs 33). The decision tree says: Close immediately. 

However -- this is also a valid time to apply Topic 21.9's specific exception assessment. Stop triggered = close in MOST cases. The exception test: (1) Is this the first adjustment? YES. (2) Is the put wing profitable? 21,500 PE at Rs 3 (deeply OTM, near-maximum-profit). (3) Is the roll debit within 50% of the original credit? Roll: buy 22,700 CE Rs 58, sell 23,200 CE Rs 28. Roll debit = Rs 30. 50% of Rs 32 original credit = Rs 16. Roll debit Rs 30 > Rs 16 threshold. FAIL. Decision: Close the full condor. The wing roll is not justified economically. Total loss: call wing loss (-Rs 58 + Rs 28 + original call credit Rs 22) = -Rs 8. Put wing gain: +Rs 9 (Rs 12 original credit - Rs 3 buyback). Net condor P&L: -Rs 8 + Rs 9 = +Rs 1 per unit -- essentially break-even. Clean close at a near-zero outcome rather than risking a larger loss through an over-priced roll. 

Case Study 3 - Rolling Long Put When Thesis Delayed (Bank Nifty) 

Context: June 2024. Bank Nifty at 52,800. A trader enters long 52,000 PE at Rs 245 (1.5% OTM), expecting a pre-RBI correction. RBI meeting in 18 days. Bank Nifty rises 300 points to 53,100 before the RBI meeting -- moving against the put thesis. The put decays from Rs 245 to Rs 98 (60% loss -- threshold for long put rolling: underlying must be moving TOWARD the thesis target, not away). Level 1.1: Stop? 50% loss threshold for time-decay long options -- Rs 98 is 60% loss. YES. But the specific long-put roll test from Topic 21.4: is the underlying moving in the right direction? NO -- Bank Nifty rose 300 points (against the bearish thesis). Thesis invalidated. Level 2.1: Thesis valid? NO. Action: Close the put. Result: sell the Rs 98 put. Net loss: Rs 245 - Rs 98 = Rs 147 per unit = Rs 147 x 15 = Rs 2,205 per lot. Clean cut at a defined loss rather than rolling into a continued adverse market. 

Case Study 4 - When Not to Adjust: The Compounding Trap

Context: August 2024. Nifty at 24,300. Bull put spread entered: short 23,800 PE Rs 38, long 23,300 PE Rs 16. Net credit Rs 22. Nifty falls sharply (global selloff) to 23,950 within one week. Short 23,800 PE now at Rs 55 (1.45x stop -- approaching the 1.5x trigger). The trader decides: 'Just 5 points from the stop but not yet triggered. Let me roll down before it hits Rs 57.' Roll down: buy 23,800 PE Rs 55, sell 23,200 PE Rs 30. Debit: Rs 25. New credit position: net credit Rs 22 - Rs 25 = Rs 3 (net loss from the roll). Nifty continues falling to 23,600. New short 23,200 PE hits Rs 58 (stop triggered). Close: loss on rolled position = Rs 58 - Rs 30 = Rs 28 per unit. Total loss: Rs 25 (roll debit) + Rs 28 (second stop close) - Rs 22 (original credit) = Rs 31 per unit = Rs 2,325 per lot. Alternative: close at original stop (Rs 57): Rs 57 - Rs 22 = Rs 35 per unit loss. Rs 35 x 75 = Rs 2,625 per lot. The pre-emptive roll actually produced a LARGER loss than closing at the original stop would have. Lesson: rolling before the stop triggers in a strongly trending adverse market compounds the loss. In a trending adverse market: do not roll. Respect the stop.