Large holders, often called “whales,” can have a significant impact on Proof of Stake (PoS) networks because influence is directly tied to the amount of cryptocurrency staked. In PoS systems, validators are typically chosen to create new blocks and confirm transactions based on the size of their stake. As a result, individuals or entities holding a large percentage of tokens have a higher probability of being selected to validate blocks and earn rewards. This can increase their wealth over time, reinforcing their influence within the network.

One major impact of large holders is governance power. Many PoS blockchains allow token holders to vote on protocol upgrades, fee structures, or policy changes. Large stakeholders can exert strong voting influence, potentially shaping decisions in ways that benefit their interests. While this can provide stability if large holders are long-term supporters, it may also raise concerns about centralisation and unequal control.

Additionally, large holders can influence market dynamics. If they decide to stake a significant portion of tokens, the circulating supply decreases, potentially supporting price stability. Conversely, sudden large withdrawals or sales can increase volatility. To address these risks, some PoS networks introduce mechanisms such as delegation limits, slashing penalties, or governance safeguards. Overall, large holders play a powerful role in PoS ecosystems, affecting security, governance, and market behaviour.