This post will address another ambiguity in the “10% buffer” Rule 18f-4 provides for excluding the notional amount of derivative transactions that hedge currency or interest rate risks (“Hedging Derivatives”) when calculating the Derivatives Exposure of a Limited Derivatives User. The ambiguity is whether, once the notional amount of a Hedging Derivative exceeds the 10% buffer, a fund should add back to its Derivatives Exposure (a) the entire notional amount of the Hedging Derivative or (b) only the notional amount in excess of the 10% buffer. We chose answer (b) in our post on The 10% Buffer and Changes in Hedged Investments. This post explains why.

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