At an Amazon fulfillment center in Spain, we used a flurry of brief walkouts late last year to force the company to improve wages and time off. We struck for three days in November and in December in 

CNBC’s “Power Lunch” team discusses cryptocurrencies, bitcoin and more with Jan van Eck, CEO of VanEck Funds.

Most ETFs give you sector exposure. The Amplify Transformational Data Sharing ETF (NYSEARCA:BLOK) goes further, concentrating in companies structurally tied to blockchain adoption — crypto exchanges, miners, Bitcoin treasury holders, and fintech platforms building on-chain infrastructure. That’s a compelling mandate in a bull market, and a punishing one when Bitcoin turns. Investors are feeling both...