VanEck has launched a fund that treats Bitcoin not as a bet, but as a measured ingredient. The VanEck Wealth Builder ETF, trading on NYSE Arca under the ticker WBMO, is an actively managed, multi-asset fund that combines stocks, bonds and real assets with a targeted allocation to Bitcoin. The Bitcoin target is 2% of the portfolio, with a permitted range of 1% to 5%. That small, bounded slice is...