What actually happens on September 15

Most coverage calls this "the CLARITY Act vote". It is not a vote on the CLARITY Act.

At 2:15pm Eastern the Senate votes on cloture on the motion to proceed. That is a vote on whether debate may begin. Passing it does not pass the bill. Failing it, by consistent reporting, would likely end the bill for this Congress.

The arithmetic

ItemNumber
Votes needed for cloture60
Republican seats53
Democratic seats45
Independents caucusing with Democrats2
Crossover votes still required if every Republican votes yes7

Seven is the whole story. We have written that number before, on August 3, and nothing since has changed it. The bill is H.R.3633. It passed the House in July 2025 and has been stuck in the Senate ever since.

One scheduling note worth having: the Federal Reserve meets September 15 and 16, with its decision on the 16th. So the cloture vote lands the afternoon before a Fed decision. If Bitcoin moves that week, separating the two causes will be harder than usual, and we would rather flag that in advance than explain it away afterwards.

The odds went from 82% to 17%

Polymarket runs a market on whether the bill is signed into law in 2026. About $14.2 million has traded on it, so this is a priced opinion rather than a thin quote on a screen.

DateOdds of becoming law in 2026Our coverage that day
Feb 1982%the high
Jul 2372%At the 1-yard line
Aug 234%Wall Street endorsed it and the odds fell
Sep 717%this article

Two of those points are ours, published on the day, which makes this a record we can be held to rather than a chart assembled after the fact. Lows near 14% were reported after the Senate delay.

We are relaying this number, not endorsing it. Prediction markets are opinion with money attached, and money has been wrong about Washington many times. But the direction of travel over seven months is hard to argue with, and the August 2 entry is the one worth staring at: Wall Street trade associations endorsed the bill and the odds fell by more than half. Endorsement was never the binding constraint. Seven senators are.

Nine milestones, and what Bitcoin actually did

Here is the part nobody publishes. We have covered this bill continuously since July, so we have a dated list of its milestones that was not selected with hindsight. For each one we pulled the Binance BTCUSDT daily session.

DateMilestoneSessionBuy shareVolume
Jul 10Three Senate disputes surface+1.47%49.6%$1,126M
Jul 21Trump clears the ethics block+1.99%51.3%$1,233M
Jul 23Odds of a Senate vote reach 72%1.54% lower47.9%$960M
Jul 24Democrats who backed it say it falls short1.47% lower48.4%$1,087M
Jul 2578 bank trade groups oppose the stablecoin clause+0.37%52.1%$568M
Aug 2Wall Street endorses it, odds fall to 34%+1.19%54.5%$531M
Aug 3Confirmed it needs seven Democrats0.08% lower51.4%$984M
Aug 8Senate opens the first stage of voting+0.06%48.8%$374M
Aug 17SEC cancels its own crypto vote+2.59%50.4%$909M

Set that against every session in the same window, July 10 to August 17, which is 39 days.

MeasureMilestone daysAll days in window
Mean session+0.510%+0.062%
Share of days that closed higher66.7%48.7%
Mean absolute move1.20%0.99%
Mean volume$864M$863M

There is a small positive tilt in the first two rows and we will not pretend it is zero. Nine observations cannot support much, but the sign is the sign.

The last row is the one that matters. $864 million against $863 million. A difference of about one tenth of one percent. On the days when the sector's most important legislation moved forwards or backwards, the market traded exactly as much as it did on an ordinary Tuesday with no news at all.

Whatever these events were doing, they were not bringing anybody to the exchange.

Did the price move the right way? Four times out of eight.

Averages hide the sharper test. If regulatory news drives the price, then good news should lift it and bad news should press it. So we labelled each milestone before looking at the return. The August 2 entry is genuinely mixed, an endorsement alongside collapsing odds, so we set it aside rather than grade it to fit.

DateNewsSessionDirection
Jul 10bad+1.47%wrong
Jul 21good+1.99%right
Jul 23good1.54% lowerwrong
Jul 24bad1.47% lowerright
Jul 25bad+0.37%wrong
Aug 3bad0.08% lowerright
Aug 8good+0.06%right
Aug 17bad+2.59%wrong

Four right, four wrong. A coin flip, from the asset class that spent the summer telling itself this bill was the catalyst.

The bottom row is the sharpest single fact in this article. The largest move of all nine milestones, up 2.59%, came on the day the SEC cancelled its own crypto vote. That is unambiguously bad regulatory news, and it produced the best session of the set.

Two honest caveats, because this result flatters our own scepticism and that is exactly when to slow down. Eight observations is a small sample, and a coin flip is what a small sample of anything tends to look like. And the good and bad labels are our judgement, which is why the table shows them: if you grade Jul 10 or Jul 25 differently, the count moves, and you are entitled to.

What survives either way is the volume row from the previous section, because that number needs no labelling at all.

What is actually blocking it

Three fights, consistently reported and none of them resolved.

Stablecoin rewards. The loudest one. Banks argue that letting platforms pay yield on stablecoin balances would pull deposits out of the banking system. We covered the lobbying on July 25, when 78 trade groups pressed that case against a deposit base measured in the trillions. Crypto firms argue that a broad ban would also block legitimate payment rewards.

Congressional ethics provisions. Cleared once already, in July, and still cited as unsettled.

Illicit finance rules. The quietest of the three and the one most likely to be traded away late.

Notice what is not on that list: anything about Bitcoin. The bill's hardest fights are about stablecoins, banks and disclosure. That is worth holding in mind when someone tells you a Bitcoin price target depends on this vote.

Where Bitcoin sits going in

As we write on Tuesday, with the session still open:

MeasureReading
Priceabout $78,850
Monday's close$79,112, 1.53% lower
Tuesday buy share, partial43.7%
50-week moving average$80,373
Distance below that averageabout $1,520, or 1.9%
Long/short account ratio1.1608

Five days ago Bitcoin closed above that 50-week line for the first time in 296 days, and held it for exactly one session. It is back underneath, and the line itself keeps descending as strong weeks from last year roll out of the window. A partial buy share of 43.7% is a weak tape, not a market leaning into an event.

That is the honest setup: Bitcoin is going into the most-discussed regulatory week of the year looking uninterested, which is precisely what the nine milestones already told us to expect.

What we cannot see

The vote count. Nobody outside the Senate cloakroom knows where seven Democrats are. Prediction market pricing is a guess with money on it, not a whip count.

Anything settling off the public order book. ETF creations and over the counter blocks do not appear in our taker buy share, so a large regulated buyer can act on this news without registering on our tape at all. That limit applies to every number above.

Positioning ahead of the vote. Open interest tells us whether exposure is growing, not who is holding it or why. Anyone claiming to know that institutions are positioned for passage is guessing.

The overlap with the Fed. The cloture vote is the afternoon before an FOMC decision. If Bitcoin moves that week, attributing it cleanly to either cause will not be possible, and we will say so rather than pick the tidier story.

What would change our answer

We are not forecasting the vote and we are not forecasting the price. But the measurement above makes one thing falsifiable, which is the point of publishing it.

If the September 15 session trades far above the $863 million baseline, our finding that this legislation does not bring people to the exchange is wrong for the event that mattered most, and we will write that. If it trades like an ordinary day again, that will be ten observations pointing the same way instead of nine.

Either result is worth having. We will publish whichever one arrives.

Earlier coverage, merged into this page

We covered this story day by day as it happened. Those daily pieces are now consolidated here, and their addresses redirect to this page. The finding from each, as published on the day:

  • Jul 10: The CLARITY Act's Final Window: 3 Senate Disputes, One August Deadline, and the Crypto Law Hanging on 60 Votes. Bitcoin holds above $64,000 as the market's focus shifts from geopolitics to Washington. The CLARITY Act cleared the House 294-134 but sits stuck in the Senate, where three disputes and an August recess deadline now decide whether crypto gets its market-structure law in 2026.
  • Jul 21: Bitcoin Takes $66,600 as Trump Clears CLARITY's Ethics Block: First 5-Day ETF Streak Since April, With Hike Odds Doubling Underneath. Bitcoin hit a five-week high of $66,621 after Trump agreed to the ethics provision blocking the CLARITY Act, sending passage odds near 50%. ETFs printed a fifth straight inflow day (~$727M for the week), while July hike odds doubled to 22% and oil hit $85. Regulation beat rates today; the FOMC decides if it keeps winning.
  • Jul 23: At the 1-Yard Line: 72% Odds of a CLARITY Senate Vote, Bitcoin at $66,700, and the $189 Million That Got It There. Treasury Secretary Bessent says CLARITY is at the '1 yard line.' Markets price a Senate vote before August 8 at 72%, but full enactment by year-end at just 31%. Bitcoin nears $67,000, Coinbase jumps 12.6%, and a record $189M in crypto political money sits underneath. The honest scoreboard before the FOMC.
  • Jul 24: CLARITY's Two-Vote Problem: The Democrats Who Backed It Now Say It Falls Short as Bitcoin Holds $65,000 Into the FOMC. The White House says the CLARITY ethics deal is done. But the only two Democrats who voted for the bill in committee, Ruben Gallego and Angela Alsobrooks, now say it falls short, with Gallego warning that Republicans will not get the Democratic votes. Bitcoin holds $65,000 after the week's $66,700 high as the August 7 recess and the July 28-29 FOMC close in.
  • Aug 2: Wall Street Endorsed the CLARITY Act and Its Odds Fell to 34%. BlackRock, Fidelity, Franklin Templeton, Goldman Sachs and SoFi all publicly backed the bill, and the market-implied probability of it becoming law in 2026 fell from 43% a week ago to 34%. Endorsements do not create floor time and the Senate leaves on August 8. Bitcoin reclaimed $62,500 over the weekend on a 55.1% Sunday buy share, but on the thinnest volume of the month.
  • Aug 3: CLARITY Needs Seven Democrats, and Bitcoin Rose Anyway. The bill needs 60 Senate votes and Republicans hold 53 seats, so roughly seven Democrats must cross. No cloture petition has been filed, Monday's only roll-call was a government funding motion, and Thune now says he wants to at least begin consideration. Bitcoin rose 1.2% anyway, with the 14:00 UTC hour taking $151.9 million at a 63.7% buy share.