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The Securities and Exchange Commission has again postponed making decisions on whether to allow the trading of altcoin spot ETFs.

The agency had been due to make rulings on Bitwise’s proposed Dogecoin ETF and Franklin Templeton’s potential XRP product by early May. However, the SEC said on Tuesday that it would now wait until mid-June to decide next steps.

Asset managers are trying their luck to get an altcoin ETF listed following the success of the Bitcoin ETFs approved last year. And President Trump’s new crypto-friendly administration has asset managers more hopeful than before.

Earlier this year, the SEC approved three Bitcoin ETFs, paving the way for the trading of products that give investors exposure to cryptocurrencies. But it shot down a bid from Winklevoss twins’ firm, Gemini, to launch an ETF tracking the price of ether, the second-biggest coin.

Asset managers Bitwise, Franklin Templeton, Grayscale, 21Shares, CoinShares, and Canary Capital are among the firms that have filed paperwork to get new crypto ETFs—based on assets such as Solana, Litecoin, and Cardano—approved.

The SEC frequently pushes back when making decisions on proposed products like ETFs—or exchange-traded funds—which trade on stock exchanges and allow investors to buy shares tracking a particular security or commodity.

Dogecoin and XRP both run on their own blockchains and are popular with traders: DOGE is the eighth-biggest cryptocurrency by market cap, while XRP is the fourth-largest. And both assets are in the top 10 most traded cryptocurrencies over a 24-hour period.

But despite their popularity, it isn’t clear whether ETFs giving investors exposure to such products will be successful: Investment vehicles built around Ethereum, the second biggest coin, were approved last year and have not experienced the same level of trading action as their Bitcoin counterparts.