XRP and Solana led altcoin-based exchange-traded products (ETPs) in inflows for the week ending March 21, according to Cointelegraph. Digital asset investment firm CoinShares reported that while other altcoins saw modest inflows, XRP and Solana stood out. Polygon (MATIC) attracted $400,000 in inflows, while Chainlink (LINK) recorded $200,000. However, overall sentiment toward altcoins remained mixed, with Ether (ETH) experiencing significant outflows of $86 million. Other notable outflows included Sui (SUI) and Polkadot (DOT) at $1.3 million each, and Tron (TRX) at $950,000.

Despite Ether’s substantial outflows, the digital asset market reversed a five-week trend of net outflows, securing $644 million in inflows. Bitcoin (BTC) played a key role in this recovery, attracting $724 million—the highest net inflow since January. Meanwhile, Ethereum has now faced four consecutive weeks of net outflows. CoinShares noted that most inflows came from the United States, totaling $632 million, largely driven by BlackRock’s iShares Bitcoin Trust (IBIT). Beyond the U.S., Switzerland led with $15.9 million in inflows, followed by Germany with $13.9 million and Hong Kong with $1.2 million.

Although Ethereum’s struggles contributed to net outflows for altcoins overall, Solana and XRP remained top performers. In the U.S., the upcoming launch of the first Solana futures exchange-traded fund (ETF) could pave the way for a spot Solana ETF. The SEC had previously approved futures-based Bitcoin ETFs due to the presence of a regulated market—the Chicago Mercantile Exchange—which helped address concerns over market manipulation. However, this led to controversy over the SEC’s refusal to approve spot Bitcoin ETFs. A lawsuit by Grayscale successfully challenged this stance, ultimately leading to the approval of spot Bitcoin ETFs. Meanwhile, XRP has gained momentum following the SEC’s dismissal of its long-running lawsuit against Ripple Labs.