逼近現價
convergence
期貨合同價格向著標的現金交易商品價格的移動。開始時，價格較高，但是當合同接近到期，期貨價格與現金交易的價格趨於一致。
Toward the underlying futures contract price in cash transactions in commodity prices move. Initially, higher prices, but when the contract expiry approaches, the price of the futures price and the cash transactions converge.