Bitcoin ETFs Post Longest Inflow Streak Since April as Grayscale Launches First Zcash ETF in the U.S.

Bitcoin Holds Above $80,000 as Institutional Money Keeps Flowing In

U.S. spot bitcoin ETFs extended their winning streak to eight consecutive trading days on Thursday, pulling in a combined $2.8 billion — the longest run of positive flows since April. The steady accumulation has helped bitcoin hold above the $80,000 mark, even as the price action itself has cooled following last week's sharp 23% advance.

The rally's original spark traces back to a U.S. Treasury announcement that it would double its long-dated bond buybacks, a move that pushed bitcoin out of a six-week trading range and triggered more than $3 billion in short liquidations. That momentum has continued to lift sentiment across risk assets more broadly, from bitcoin to gold.

Derivatives data suggests the current advance is being driven more by spot demand than leveraged speculation. Bitcoin futures open interest has stayed roughly flat near 700,000 BTC even as price pushed higher, which typically points to a steadier, less liquidation-prone climb. Options markets tell a similar story of cautious optimism: near-term traders are loading up on calls between $70,000 and $85,000, while institutions are simultaneously buying downside protection further out — a sign that big players are positioning for more upside without ignoring the risk of a pullback.

Altcoins painted a mixed picture Thursday. Bittensor's TAO led gainers, climbing more than 5% and extending its rebound from August lows, while tokens like Zcash and pump.fun slipped as attention rotated back toward bitcoin. CoinMarketCap's Altcoin Season Index eased to 38 out of 100, down from a weekly high of 51, reinforcing that bitcoin remains the market's center of gravity for now.

Grayscale Brings Zcash to Wall Street With a First-of-Its-Kind ETF

While bitcoin dominated the headlines, one of the week's more structurally significant developments came from the privacy-coin corner of the market. Grayscale's Zcash Trust officially converted into a spot exchange-traded product and began trading on NYSE Arca under the ticker ZCSH — the first spot ETF anywhere in the world to give investors regulated, brokerage-account access to ZEC without the hassle of self-custody.

Grayscale first filed to convert the trust back in November 2025, on the back of a roughly 1,000% run in ZEC's price that year. The listing caps a chaotic few weeks for the token: ZEC rocketed more than 50% in the days leading up to the launch on anticipation and "next bitcoin" narratives tied to its capped 21-million supply and proof-of-work design, touching an eight-year high near $880, before cooling by roughly 4-8% as the "buy the rumor, sell the news" dynamic played out.

The launch also fits a broader pattern: Grayscale has been steadily expanding its regulated product lineup through 2026, including a Hyperliquid staking ETF in June and a pending filing for a spot BNB ETF. Taken together with bitcoin's sustained ETF demand, it points to U.S. regulators and asset managers becoming increasingly comfortable bringing a wider slice of the crypto market into traditional investment wrappers.

What It Means for U.S. Investors

For American investors, the two stories share a common thread: crypto is continuing to move deeper into mainstream financial infrastructure. Sustained bitcoin ETF inflows show that institutional demand isn't a one-week phenomenon tied to a single catalyst, while the Zcash ETF launch demonstrates that regulators are willing to extend that access beyond the largest, most liquid tokens. Whether that translates into a durable "altcoin season" remains an open question, but the plumbing for broader institutional exposure to crypto is clearly being built out in real time.