Bitcoin and Ether experienced significant declines in the fourth quarter, each falling more than 22% as the anticipated December Santa rally did not occur. This downturn marks a challenging period for the leading cryptocurrencies. In other developments, Cypherpunk Holdings, backed by the Winklevoss twins, has purchased $28 million worth of Zcash, acquiring approximately 1.8% of the total supply. This move underscores Cypherpunk's strategic investment in privacy-focused digital assets. Meanwhile, Prenetics, supported by David Beckham, has reversed its earlier decision to invest in Bitcoin, abandoning its previous treasury strategy. This shift highlights the company's changing approach to cryptocurrency investments.