Coinbase's third-quarter 2026 earnings report turned into a stock sell-off on October 30, 2026, when shares closed down 10.62% at $143.54 despite the exchange posting net income of $719 million, up from $433 million a year earlier. The decline reflected concerns about profit quality, insider selling plans, and a weaker core operating business.
According to Ambcrypto and crypto.news, roughly $715 million of the $719 million net profit came from gains on Coinbase's own crypto investment holdings. Adjusted net income was only $78 million, while adjusted EBITDA rose 60% quarter over quarter to $333 million. Net revenue fell about 34–35% year over year, with Ambcrypto reporting approximately $1.16 billion and crypto.news citing $1.22 billion, down from $1.87 billion a year earlier.
Transaction revenue, a key demand indicator, slid to $590 million, down 44% year over year. Subscription and services revenue reached $570 million, up 3% from the prior quarter and representing about 49% of net revenue. The company also reported record average USDC holdings of $22 billion across its products, while its share of global crypto trading volume rose for a fourth consecutive quarter to 10.7%. Prediction markets passed $200 million in annualized revenue, with daily traders up more than 60% from the previous quarter.
Separately, the Q3 filing disclosed pre-arranged Rule 10b5-1 trading plans for three senior executives covering up to 13,594,519 Class A shares. CEO Brian Armstrong's plan, adopted August 12, covers up to 8,167,446 shares and can begin November 16, 2026 through October 22, 2027. Co-founder Fred Ehrsam's plan covers up to 3,866,620 shares from December 7, 2026 to June 7, 2027, while President Emilie Choi's plan covers up to 1,560,453 shares from January 4, 2027 to December 31, 2027. At the October 29 close of $160.59, the combined ceiling was worth about $2.18 billion; after the October 30 drop it was about $1.95 billion.
The plans do not guarantee sales, as they are preset schedules with threshold price conditions, but the disclosure added to shareholder concerns as COIN shares are down 39.31% year to date and near the bottom of a 52-week range from $136.89 to $342.80. A third disclosure involved a breach at third-party analytics provider Amplitude that exposed some customer contact information; Coinbase said its own systems and customer funds were unaffected. The same week, Coinbase's October 30 deadline to restrict non-compliant stablecoins under EU MiCA rules pushed some European traders toward decentralized exchanges.
The stock drop also coincided with a broad risk-off session in crypto following the Binance security breach, with Bitcoin and Ether sliding, making it difficult to isolate the insider filing as the sole cause of the sell-off.
