Mumbai, May 26 -- A long-standing impa-sse between India's largest stock exchange and the market regulator regarding the exchange's public listing appears to be nearing resolution. The possibility of such a breakthrough lifted investors' mood and sent unlisted shares of the exchange soaring in the grey market. According to two people aware of ongoing discussions, the National Stock Exchange (NSE) may receive a no-objection certificate (NoC) from the Securities and Exchange Board of India (Sebi) for its initial public offering (IPO) within weeks, potentially ending years of litigation and regulatory deadlock. Two options are being discussed, the two people cited above said on the condition of anonymity. One: Sebi granting the NOC subject to ...