Gap-adjusted sizing for HPCL on the same signal

The 4 Nov 2026 signal of 15.9 could have been traded in Hindustan Petroleum (HPCL) instead of BPCL. From Yahoo daily bars: HPCL opened at ₹381.40 on 5 Nov 2026; its 14-day ATR (simple mean of true ranges) to 4 Nov was ₹11.20; the 99th percentile of its adverse overnight gaps over the five years to 4 Nov was $g_{99} = 2.81\%$. The account is ₹10,00,000, risk 1% per trade, the stop is $1.5\times$ATR below entry, and the gap cap in (15.9.1) is 1.5% of capital.

(a) Compute the stop price and the stop distance $d$. (b) Compute the two terms of (15.9.1) and the position size $Q$. Which term binds? What is the notional value, and what is the rupee risk at the stop? (c) The HPCL futures lot was 2,025 shares (NSE F&O bhavcopy, 5 Nov 2026). Compute the risk at the stop of one lot and the loss if a $g_{99}$ gap opened through the stop. Can this account trade HPCL futures under the rule? (d) HPCL's 6 Nov 2026 bar was open ₹375.05, high ₹387.15, low ₹369.50, close ₹387.15. Under the exit rules of 15.9.2, what was the exit and the gross R-multiple?