California Resources Corp., an oil and gas exploration and production company, was one of the week’s leading gainers. Shares rose 52 percent to close at $2.26 a share on Friday. Virtual Piggy, Inc. was also a big gainer this week. Shares for the ecommerce payment company for kids rose nearly 32 percent to close the week at $0.11. Crowdgather, Inc., an owner and operator of digital assets in the consumer and cannabis sectors was among the week’s losing stocks. Shares fell nearly 26 percent to close at $0.02 a share.