ETHW.SW stock down 6.06% pre-market on SIX: Watch CHF 16.45 support

We see ETHW.SW stock down 6.06% in pre-market trade on 21 Mar 2026, trading at CHF 16.45 on the SIX exchange. The WisdomTree Physical Ethereum ETF is one of the top pre-market losers as investors react to Ether price moves and fund flows. Volume is 4,968 shares, above the average of 3,069, suggesting heavier selling interest. We break down the technicals, liquidity and Meyka AI grade to help investors understand short-term downside and medium-term upside scenarios.