US Stock Market Close: Cryptocurrency Stocks Experience Widespread Decline, ABTC Drops Over 8%

As of March 31, Bitcoin has surpassed $68,000, with a 24-hour gain of 2.45%, according to HTX market data.

March 31 – The Block reports the National Football League (NFL) has sent letters to prediction market platforms Kalshi and Polymarket, asking them to refrain from offering contracts tied to easily manipulable or predetermined events. Commodity Futures Trading Commission (CFTC) Chairman Michael Selig later noted the league would be granted significant regulatory leeway. Per ESPN, the NFL outlined specific contract categories in the letter: individual game occurrences (e.g., whether a quarterback’s first pass is incomplete or a kicker makes an error), contracts tied to draft picks and roster moves, and contracts linked to broadcast mentions or celebrity appearances. The league also flagged concerns over field goal and player injury-related markets, noting those contracts could create incentives for manipulation. In an interview, Selig said: “If a league identifies a contract as easily manipulable, we’ll assess the associated risks. Leagues are well-positioned to make those calls.”

CoinDesk reported on March 31 that Jack Dorsey’s payment firm Square announced Monday it has begun automatically enabling Bitcoin payments for millions of eligible small businesses in the U.S.—no extra setup required. Transactions convert to U.S. dollars instantly at sale, so businesses avoid Bitcoin price volatility risk and don’t need to adjust custody or accounting processes. The feature is fee-free through 2026.

On March 31st, per Onchain Lens monitoring, a newly created wallet deposited $4.89M into HyperLiquid and shorted 9,887 ETH with 20x leverage. The position totals $20M, with an opening price of $2,021.63 and a liquidation price of $2,466.02.

**March 31st, per Business Wire: Bitcoin treasury firm Nakamoto released its full-year 2025 financial report on March 30, disclosing it sold approximately 284 BTC in March 2026 for roughly $20 million (average selling price ~$70,422). The proceeds will fund a dedicated USD operational reserve to cover strategic integration activities, Kraken loan interest payments, and other short-term liquidity needs.** **Per the report, the company’s weighted average cost of Bitcoin holdings is $118,171 per coin, while Bitcoin’s market price as of December 31, 2025, was just $87,519. This led to a full-year loss of $166.2 million due to fair value changes in its digital assets. At year-end, Nakamoto held 5,342 BTC total.** **The firm emphasized it still views Bitcoin as a long-term strategic reserve asset, clarifying the sale is solely for short-term liquidity management—not a strategic shift.**

March 31: Onchain Lens data shows a newly created crypto wallet received 450 BTC from FalconX, valued at roughly $30.27 million.