US spot ETFs for altcoins beyond Bitcoin and Ethereum have started pulling in fresh capital again after weeks of muted activity. Funds tracking $XRP, $DOGE, $LINK, and $HBARall logged net inflows during the first week of May. The $XRPcomplex led the move. $HBARbroke a two-week dry spell.

The shift matters because these regulated wrappers force spot buying on exchanges. Even modest inflows tighten the supply of coins where ETF holdings already account for more than 1% of circulating tokens.

Which altcoin ETF is leading the recent inflows?

$XRPfunds are running hottest. According to SoSoValue data, the basket of products from Bitwise, Canary, Franklin Templeton, 21Shares, and Grayscale pulled in $13.03 million on May 6. May 5 added $11.28 million. May 4 brought another $3.87 million. April closed with $81.59 million in net inflows, the strongest monthly figure since launch. Cumulative net inflows now sit at $1.32 billion.

The $XRPETF complex holds a meaningful slice of circulating supply across its issuers. That gives it the largest aggregate AUM among non-Bitcoin, non-Ethereum spot products.

Why is the $HBARETF inflow notable?

Canary Capital's spot $HBARproduct pulled in $2.49 million on May 6. That was the first net inflow since April 21, when the fund saw $244,000 enter. Cumulative net inflows now total roughly $99 million, with AUM near $56 million.

What stands out is concentration. The $HBARETF holds roughly 1.45% of $HBAR's market cap, one of the highest ratios across spot altcoin products. A small inflow on a thin float has an outsized effect.

How is the $DOGEETF doing?

The $DOGEETF group, which includes three products, just logged its first back-to-back daily inflow streak since January 5, 2026. Combined inflows hit $627,000 over two trading days. May 5 saw $400,000 enter. May 6 added another $227,000. The prior net inflow before that streak landed on April 27.

Cumulative net inflows for $DOGEETFs total $10.25 million on AUM of $13.65 million. That works out to roughly 0.08% of $DOGE's market cap, well below the ratios seen in $HBARand $LINKproducts.

What about $LINKand $SOL?

Two $LINKETFs are on the tape, including one from Grayscale. The pair recorded combined net inflows of $533,000 on May 6 and $878,000 on May 7, lifting aggregate AUM above $115 million. The two products together hold about 1.58% of $LINKsupply, the highest ratio in the altcoin ETF group. Flows arrive as Chainlink reports that oracles are enabling more than $30 trillion in transaction value.

$SOLETFs added $21.30 million on May 6 and stayed positive into May 7 with another $6.67 million. April net inflows for $SOLcame in at $38.69 million, second only to $XRPamong altcoins.

What does the wider picture look like?

April 2026 was a broad strength month for altcoin ETFs:

• $XRP: $81.59 million
• $SOL: $38.69 million
• AVAX: $14.23 million
• $LINK: $12.95 million
• $HBAR: $2.31 million
• $DOGE: $1.99 million

Total US spot crypto ETF AUM reached around $120 billion by month's end. April pulled in $2.48 billion across the full crypto ETF complex.

May 7 told a different story. Overall flows turned negative on Bitcoin and Ethereum outflows, and most altcoin products printed zero or flat on the day. The early-May spikes still mark a clean break from the quieter late-April tape.

Why this matters

Altcoin ETF AUM is still small compared to Bitcoinand Ethereumfunds. The structural mechanics matter though. These flows arrive via prime brokers and authorized participants, and that demand gets priced in differently from retail flow on DEXs.

The next signal to watch is whether early-May momentum holds through mid-month or fades back into the late-April pattern of zero days.

Sources:

• SoSoValueDaily and cumulative spot crypto ETF flow data, AUM figures and percentage-of-supply ratios.
• ChainlinkSource for the $30 trillion in oracle-enabled transaction value figure.