Coinbase Global Inc. (NASDAQ: COIN) sold off Tuesday as prediction market traders slashed the chance that the Digital Asset Market Clarity Act becomes law this year. Shares dropped about 6% into the Senate’s 2:15 p.m. ET cloture test, roughly twice Bitcoin’s decline over the same stretch. Polymarket’s contract on whether H.R. 3633 is signed by Dec. 31 fell to as low as 5% during the day’s Senate vote, before making a slight recovery.
The stock did not wait for the roll call. After Sen. Cynthia Lummis rejected a Democratic counterproposal that arrived late Monday, traders sold the “yes” side and used Coinbase as the listed stock proxy for the bill. The company is tightly tied to the outcome: average USDC held in Coinbase products reached $20 billion last quarter, more than 30% of USDC in circulation.
By mid-afternoon, the damage had widened. Coinbase traded near $174, down 9.1% from Monday’s close, while Circle fell 9.8% and bitcoin changed hands near $75,904. Monday’s 6.23% jump to $186.19, which followed a $177 upgrade, disappeared in a single session.
CLARITY Act passage odds collapse after the counteroffer
The Polymarket contract pays only if the bill becomes law by year-end, not if senators merely agree to debate it. That design is why a 15% quote already priced a dead 2026 path before the floor vote. More than $18 million had changed hands on the question, so the price moved like a live scoreboard rather than a poll.
CoinDesk put the 2026-passage contract at 14% Tuesday morning, down from about 30% a day earlier. Kalshi traders pushed the timeline out. The chance of any qualifying market-structure bill becoming law before Oct. 1, 2027, dropped to 36% from about 53% Monday, while a Jan. 1, 2028, horizon held near 51%.
The markdown followed a bounce that never held. Republicans released a weekend draft with 126 Democratic-requested changes, and implied odds briefly touched the mid-30s. Democrats then sent a counteroffer. Lummis called the GOP text a final offer. The bid vanished. Grayscale’s Monday read near 29% aged in hours.
Bitcoin traced the same arc. A Monday high of $79,427 faded as passage odds cracked, leaving the coin around $76,862, down 1.7% from midnight UTC. More than 90 names in the CoinDesk 100 were lower even as equity futures firmed, reversing Monday’s split between crypto and the rest of the market.
The vote matched the contracts. Cloture on the motion to proceed failed, with reports putting the tally at 49-50 — 11 votes short of the 60 needed to open debate. Once opposition reached 41 nays, 60 was already out of reach and cloture was dead.
Why Coinbase moved faster than the legislative calendar
Coinbase did not need a final statute to reprice. It needed a read on whether Congress would still write lasting digital-asset and stablecoin rules this year. Those rules would have sorted SEC and CFTC jurisdiction and touched a fast-growing Coinbase balance-sheet line. When that likelihood narrowed, the equity became a leveraged claim on legislative failure.
Former Rep. Tim Ryan, who sits on Coinbase’s Global Advisory Council, told Benzinga on Monday that supporters “can get there,” pointing to Sens. Ruben Gallego and Angela Alsobrooks. Polymarket still showed year-end passage near 29% when he made this comment. After Lummis rejected the counteroffer, that quote value fell to nothing.
Republicans hold 53 seats, so cloture still needed at least seven Democratic or independent votes if every Republican said yes. Several Democrats who spent months negotiating voted no, including Gallego and Alsobrooks. Sen. Mark Warner said he would not advance a bill that left the president free to profit personally from the industry.
Ethics language, not the jurisdiction charts, broke the deal. Democrats wanted tighter conflict-of-interest rules around official crypto holdings. Republicans offered a narrower package. Warner called the ethics title not “near enough.” Banking groups kept pressing on stablecoin rewards. Those two fights turned a market-structure bill into a fight over who writes the rules and who profits. The stuff of all current partisan divides.
Coinbase Chief Policy Officer Faryar Shirzad said the draft already answered seven principles Democratic senators laid out a year earlier, including jurisdiction, issuer oversight, illicit finance, conflicts of interest, and consumer protection. The Senate vote count did not move. After the failed vote, CEO Brian Armstrong warned that a “no” lets other countries lead.
Every party took their standard talking points on this bill.
What the failed cloture vote means for listed crypto names
Missing cloture is not a final burial of H.R. 3633, but the calendar forecast is not bright. The Senate is due to leave after Oct. 2 through Nov. 6, with midterms right behind that window. Another 60-vote coalition this year now looks thin, and year-end signing contracts already treated that as likely.
Hilbert Group CEO Barnali Biswal said falling short of 60 should not, by itself, force a crash because traders had already priced in failure. NEAR Chief Legal Officer Abhishek Vaidyanathan said the next Congress is the likely next opening, noting the House had already canceled the weeks of Sept. 21 and Sept. 28.
Scott Melker put the lobbying fight more bluntly, congratulating large banks “on lobbying to kill Clarity.”
The GENIUS Act remains the session’s only major legislative win. SEC and CFTC work continues, and several crypto executives stressed that agency rules do not freeze because cloture failed. Agency rules can still change with the next administration.
The three signals still driving Coinbase
Three numbers now matter more than the back-and-forth political talking points. First is Coinbase versus bitcoin: the stock fell harder than the crypto coin into the vote, the usual pattern when legislation is being battled over. Second is the year-end Polymarket contract on the Clarity Act passage, which already treated 2026 enactment as a tail event after the floor result. Third is Kalshi’s 2027 and 2028 ladders, which pushed any replacement bill further out. Keep your eyes on the calendar ladder.
The New York Times called the result a major blow after more than $100 million in industry political spending, tying Democratic resistance to ethics concerns around official crypto holdings, including those linked to President Trump. Investor’s Business Daily said crypto stocks and bitcoin tumbled as the bill stalled again.
References
- Benzinga, “Coinbase Slides 6% as CLARITY Odds Crash to 15% Just Before Senate Vote”
- CoinDesk, “Clarity Act’s odds of passing plunge as Republicans reject Democrats’ counter-proposal”
- CoinDesk, “Bitcoin gives back Monday’s gain as Clarity Act odds fade on Polymarket”
- CoinDesk, “Crypto Clarity Act flames out in failed U.S. Senate vote”
- CoinDesk, “Clarity Act fails in Senate: Here is how the crypto industry is reacting”
- Bitcoin.com News, “CLARITY Act Made 126 Concessions and Still Couldn’t Get 60 Votes”
- Bitcoin.com News, “CLARITY Act Odds Slide to 18% as Banks and State AGs Push Back”
- Benzinga, “CLARITY Act Fails With 41 Nays”
- Benzinga, “EXCLUSIVE: CLARITY Act ‘Can Get There,’ Tim Ryan Says”
- TechStock 2, “CLARITY Act Vote Fails 49-50; Coinbase and Circle Lose Nearly 10%.”
- Finance Feeds, “Coinbase Stock: $177 Target, $186 Close, CLARITY Vote Today”
- The Block, “Clarity Act preliminary vote falls short in Senate”
- The New York Times, “Senate Votes to Block Crypto Bill in Major Blow to the Industry”
- Investor’s Business Daily, “Clarity Act Vote Fails. Crypto Stocks, Bitcoin Tumble”
- CryptoSlate, “CLARITY Act chances sink below 20%.”
- CryptoSlate, “CLARITY Act collapses in Senate after last-minute ethics talks fail”
- Cointelegraph, “CLARITY Act Odds Sink Amid Democratic Opposition to GOP Deal”
- Bloomberg, “Crypto Rises as Long-Shot US Bill Gains Better Odds of Passage”
- YouTube, FedNet, “Senate Floor Session: September 15, 2026”
- YouTube, CoinDesk, “CLARITY Act’s Make-or-Break Vote: Live Floor Proceedings”
