The National Investment Unit Trust (NIUT) was established in 1962 under a Trust Deed executed between National Investment Trust Limited (NITL) and National Bank of Pakistan as Trustee. As at June 2000 the management company has been classified as an Asset Management Company. NIUT is an open-ended fund. Post 9/11 the stock market has shown a consistent upward trend; the remittances from overseas Pakistanis have doubled over the last year. This along with a reduction in interest rates coupled with decreasing rates of Special Saving Certificates (SSCs) & limited investment options has resulted in an increased demand for NIUT units improving the overall liquidity/funds under the company. The net assets of the company, as of March 2007, were PKR 78 billion.

Additionally, given their size they do not provide the investor with a wide enough exposure to the currently un-fancied, but potentially most lucrative medium-sized and smaller companies. The fund has also significant strategic holdings in some of Pakistans best-managed companies and in major privatization transactions e.g. Pakistan State Oil, Sui Northern, Sui Southern, Karachi Electric Supply Corporation, Pakistan Tele Communication Limited etc. These companies comprise the backbone of Pakistans economy.