Notwithstanding this subsection, nothing in this chapter may be deemed to prohibit an insurer from effecting or maintaining bona fide hedging transactions in foreign currency in connection with the purchase and sale of securities eligible for investment under this chapter or in contracts for future delivery of options, calls and other rights to purchase and puts and other rights to require another person to purchase, securities eligible for investment under this chapter, provided that those contracts, options, calls, puts and rights are traded on a national securities exchange or board of trade regulated under the laws of the United States and provided that the aggregate amount of those investments, as valued for all purposes in accordance with generally accepted accounting principles, shall not exceed 1% of the insurer's assets. For purposes of this subsection, a "bona fide hedging transaction" means a purchase or sale of foreign currency or of a contract, option, call, put or right, as the case may be, entered into for the purchase of offsetting changes in foreign currency exchange rates or in the market value of a security held or proposed to be acquired by the insurer.