LIC invests in sectors such as banks, cement, chemicals and fertilizers, electricity and transmission, electrical and electronics, engineering, construction and infrastructure, fast-moving consumer goods, finance and investments, healthcare, hotels, information technology, metals and mining, motor vehicles and ancillaries, oil and natural resources, retail, textiles, transportation and logistics.

Among the Nifty companies, LIC’s holding in terms of value in 2012 were estimated to be the highest in ITC (₹27,326 crore), followed by RIL (₹21,659 crore), ONGC (₹17,764 crore), SBI (₹17,058 crore), L&T (₹16,800 crore), and ICICI Bank (₹10,006 crore).[16] The share price drop in ITC on 18 July 2017 had caused LIC a major loss of around 7000 crores during the financial year.
LIC also holds 51% stake in IDBI Bank, making it the only insurer in India to own a bank, since regulations prohibit insurers from holding more than 15% stake in any company, LIC will have to decide a timeline for paring its stake in IDBI bank; also LIC may have to pare its stake in LIC Housing Finance Ltd as a company cannot be the promoter of two finance companies carrying out same housing finance business in India.[17]