Bitcoin (BTC) regained the $80,000 level on Sept. 19, rebounding after a pullback. CoinGecko data showed bitcoin rose about 5 percent over the past 24 hours to trade near $80,800. TradingView data showed it climbed to $81,034 on Bitstamp, marking a local peak.

The rise reversed a slide after the U.S. Senate failed to pass the Clarity bill on Sept. 15. After the bill was voted down, Coinbase and Circle fell about 10 percent, while Strategy and Strive slid about 5 percent and American Bitcoin dropped about 8 percent.

Investor sentiment recovered after the U.S. Commodity Futures Trading Commission (CFTC) and the Securities and Exchange Commission (SEC) moved on crypto-related measures using existing authority. The CFTC on Sept. 17 (local time) issued a no-action relief measure for a provider of passive software, and the SEC temporarily eased requirements for some platforms that support on-chain trading of tokenised securities. The CFTC also submitted a crypto market regulation plan to the White House for review without disclosing details.

Crypto-related stocks surged across the board on Sept. 18 on the news. Yahoo Finance data showed Strategy led gains, rising more than 13 percent, while Coinbase and American Bitcoin climbed about 11 percent each and Robinhood jumped nearly 9 percent. Circle, Strive and bitcoin miner Riot Platforms also rose 5 to 7 percent.

Bitcoin's rise also came as U.S. Treasury yields rebounded. The U.S. 30-year Treasury yield rose 90 basis points to 5.34 percent on Middle East-driven oil price uncertainty, concentrating liquidations of short positions in the crypto market. Coinglass data showed short liquidations across crypto totalled about $250 million over four hours.

The International Energy Agency (IEA) warned in a report on the day that oil price rises and demand declines could be inevitable if crude supply in the Gulf region remains constrained and commercial inventories are rapidly depleted. The IEA said crude shipments through the Strait of Hormuz in August were 7.6 million barrels a day, down 13.1 million barrels from before a U.S.-Iran war.

Trader and analyst Rekt Capital (렉트캐피털) said it would be key whether bitcoin breaks through resistance at $82,000. He said that if it fails to clear that level, a double rejection pattern could appear similar to when the rebound ended in May.

On-chain analytics firm Glassnode said bitcoin climbed back above the 'True Market Mean' of $76,660, the average acquisition cost of all coins, and assessed that the price had returned to a bull-market zone. The average acquisition cost of bitcoin corporate treasuries was tallied at $80,500.