The Swiss National Bank (SNB) does not play a direct role in regulating foreign investment in Swiss stocks. Instead, this responsibility falls under the jurisdiction of the Swiss Financial Market Supervisory Authority (FINMA). However, the SNB's monetary policy decisions, such as interest rate changes and currency interventions, can have an impact on foreign investment in Swiss stocks. In particular, a strong Swiss franc resulting from SNB intervention can make Swiss stocks more expensive for foreign investors, potentially leading to a decrease in foreign investment. As a result, the SNB's policies and actions are closely monitored by foreign investors who are looking to invest in Swiss stocks.

The Swiss National Bank (SNB) does not directly regulate foreign investment in Swiss stocks but plays a key role in maintaining financial stability, which indirectly affects such investments. As Switzerland’s central bank, the SNB oversees monetary policy, manages currency reserves, and ensures liquidity in financial markets. While foreign investment rules are primarily set by the Swiss Financial Market Supervisory Authority (FINMA), the SNB monitors capital flows and exchange rates to prevent excessive volatility that could impact stock markets.

Additionally, the SNB may intervene in forex markets to stabilise the Swiss franc (CHF), influencing foreign investor returns. Its policies on interest rates and money supply also shape market conditions, impacting stock valuations and investor confidence.