Coinbase Global Inc. shares surged on Wednesday, rising more than 7% to an intraday high above $293 and edging toward the $300 threshold. The rally followed a decisive break through technical resistance near $272, with the stock advancing past $270, $283 and $292 in quick succession during afternoon trading. The latest jump extends a rebound from April, when the cryptocurrency-exchange operator’s shares briefly traded below $180 amid a broad market selloff sparked by the United States’ newly adopted 145% tariff on Chinese imports. From that low, the stock has gained about 60%. Market participants pointed to momentum buying after the breakout and renewed speculation that Coinbase could become eligible for inclusion in the S&P 500 later this year. The prospect of index-fund demand, combined with the technical set-up, was cited by traders as a catalyst for Wednesday’s sharp move.