Grayscale Investments is ramping up its altcoin portfolio, focusing on Chainlink (LINK), Zcash (ZEC), Stellar Lumens (XLM), and Filecoin (FIL). The firm recently filed for a spot LINK ETF, aiming to transition its Chainlink Trust into an ETF on NYSE Arca. Zcash has experienced a 110% price increase following Grayscale's renewed interest. Meanwhile, Grayscale's XLM holdings have grown from 100 million to 120 million between July and October 2025, with the Stellar Lumens Trust rebranded as an ETF to enhance institutional access. Despite subdued price movements, Grayscale continues to accumulate Filecoin steadily.