Three kinds of complex certificates are permissible:
1. A certificate tracking multiple indices
The weight of each index is predetermined in the prospectus and may not be adjusted or changed.
For example, a given certificate could track the TA-100 index (25%)and the linked bonds index (75%).
2. Certificates tracking formulae based on a given index
In some markets these certificates are called "Accelerated Trackers". For instance, a given certificate might grant double exposure to an index (leverage).
Example: An investor buys a certificate for NIS 100. The issuer borrows another NIS 100 and buys the underlying asset in the value of NIS 200. Upon conversion, the investor is entitled to receive double the index’s return during the relevant period of time minus interest that the issuer paid for the loan.
The exposure to the index is doubled, and the risk is greater than that entailed in a regular index-linked note. If the index rises, the investor wins double returns. But if the market falls, the loss is doubled.
3. Index-linked notes tracking variable indices
The prospectus must state up to 10 possible indices. The issuer can change the index that the certificate tracks up to four times a year, with 7 days’ advance notice.
The list of potential indices must be stated in advance in the prospectus. No other indices may be added later on.
During the advance notice term, the issuer shall not charge conversion fees. If a holder wishes to sell the certificate consequent to the change, it can be done at a low cost.