Shares of companies in the cryptocurrency business powered higher Monday, after bitcoin BTCUSD, +1.69% rallied toward a fourth-straight gain, and the first close above the 22,000 in a month. Among those that are all about crypto, shares of Marathon Digital Holdings Inc. MARA, +21.39% shot up 23.3%, Riot Blockchain Inc. RIOT, +11.85% ran up 18.3% and Coinbase Global Inc. COIN, +9.07% climbed 13.8%. Among other companies with significant crypto exposure, MicroStrategy Inc.’s stock MSTR, +5.44% jumped 11.2% and Signature Bank SBNY, +2.38% surged 3.9%. Meanwhile, bitcoin charged up 6.6% to $22,183, and has soared 14.6% in four sessions since closing at a 19-month low on July 12, toward the highest close since July 15. The cryptocurrency has still plunged 45.6% over the past three months while the S&P 500 SPX, -0.84% has declined 12.9%.