Fed returns to 50–50, Israeli airspace risk jumps to 77%, Ether downside retreats (2026)

The week ended with three different clocks running at once. The September Fed decision returned to a near coin flip after last week's hike repricing; a broad Israeli airspace closure became a high-probability tail risk; and the market-implied chance that Ether hits $2,250 this year fell as Ether rallied.

This recap covers September 1, 9:00 a.m. through September 7, 2026, 9:05 a.m. ET. Polymarket prices, weekly changes, volume, liquidity, and quotes were refreshed between 9:05 and 9:08 a.m. ET on September 7. An inferred starting probability equals the current Yes price minus Polymarket's displayed one-week change. Dollar figures are rounded to the nearest dollar.

The board at a glance

Theme and contract	Current Yes	Inferred Yes one week ago	Volume in past 7 days	Liquidity	Best bid / ask	Resolution clock
Fed: +25 bp after September meeting	49.5%	55.5% (-6.0pp)	$4,569,695	$491,272	49¢ / 50¢	September 15–16 meeting 1
Fed: no change after September meeting	50.5%	44.5% (+6.0pp)	$7,480,697	$485,231	50¢ / 51¢	September 15–16 meeting 2
Israel initiates a major airspace closure by September 30	76.5%	8.5% (+68.0pp)	$1,409,812	$100,549	76¢ / 77¢	September 30 3
Ether dips to $2,250 by December 31	56.0%	77.0% (-21.0pp)	$256,583	$28,746	55¢ / 57¢	December 31 4

The Fed rows are complementary children of one event. Their weekly child-market volume totals $12,050,392, while the parent event shows $30,984,471 in weekly volume and $22,010,830 in open interest. The two levels answer different questions: child figures describe the exact contracts in the table; parent figures describe trading and open positions across the whole September-decision event. 1 2

The Fed repricing is now a two-release trade

The hike child fell from an inferred 55.5% to 49.5%, while the hold child rose from 44.5% to 50.5%. Both books remained deep and quoted one-cent spreads. The probability split leaves the September 15–16 decision dependent on the next inflation release rather than on a settled policy view. 1 2 5

The data supplied fuel for both sides. The Bureau of Labor Statistics reported 162,000 August payroll gains, an unchanged 4.1% unemployment rate, and 55,000 upward revisions to June and July combined. The 162,000 gain also exceeded the 31,000 average monthly increase over the preceding 12 months. 6

On September 3, Governor Christopher Waller described a conditional decision rule. Waller said he would support holding if the next data confirmed disinflation, while a hot August inflation reading could justify a hike. Waller also said three-month core inflation through July was 3.05%, down from 4.76% in February. 7

Hike case: The stronger jobs report leaves the labor market supportive of a restrictive stance. A firm August inflation report would meet the condition Waller set out for tightening.

Hold case: Waller's stated hold condition is continued disinflation, and the contract currently puts that outcome narrowly ahead. The next inflation release is the immediate test.

Conditional trade inference: If a firm inflation print pushes the hike child back above 55% and two-year Treasury yields rise alongside it, a retail trader could consider a small defined-risk bearish-duration position, such as a put spread on a rate-sensitive growth ETF. If the hold child gains further while two-year yields fall, a defined-risk call spread on the same type of exposure becomes the opposing setup. Each setup needs the yield move as confirmation rather than treating a single event-market price as a position-size signal.

Airspace risk is priced as an operational event

The Israel contract rose 68.0 percentage points, from an inferred 8.5% to 76.5%, on $1.41 million of weekly volume. Its one-cent spread is narrow, although its $100,549 liquidity is far below the Fed pair's combined $976,502. 3

The contract has a demanding resolution rule. A Yes outcome requires a broad closure, cancellation, or complete suspension of commercial aviation across all or most Israeli civilian airspace. Airline-specific suspensions, isolated restrictions, and weather closures fall outside that rule. 3

The operational backdrop tightened during the window. In its September 2 briefing, OPSGROUP said Israel was open while operations remained below normal; some foreign airlines had resumed service, while most major U.S. and European operators were still absent. OPSGROUP also reported renewed U.S.-Iran fighting, Iranian missile and drone attacks on U.S. bases in several countries, and a renewed risk of short-notice airspace disruption. 8

Yes case: Renewed regional attacks create the path to an official, broad aviation restriction. The contract's price reflects the chance that security assessments turn into a qualifying Israeli authority action before September 30.

No case: Israel remained open as of September 2, and some foreign carriers had resumed. Continued operation and further service restoration would keep the strict settlement threshold out of reach. 8

Conditional trade inference: An official broad closure plus a confirming rise in oil prices would support watching a small, defined-risk long-energy or protective airline-equity put spread. Continued open airspace, additional carrier restoration, and a softer oil price would support the opposite watch: a limited bearish-energy or bullish-airline spread. The trigger is the aviation authority action, because the market's settlement rule hinges on that action.

Ether's downside threshold retreats as spot recovers

The year-end $2,250 child fell from an inferred 77.0% to 56.0%. This contract remains tradable but thin: its $28,746 liquidity and two-cent spread require more execution caution than the other featured markets. The parent Ether-price event had $1,027,769 in weekly volume and $4,473,739 in open interest. 4

The settlement test is mechanical: any Binance ETH/USDT one-minute candle with a low at or below $2,250 before year-end resolves Yes. A price from another exchange cannot settle the contract. 4

Kraken's ETH/USD daily candles closed at $2,417.26 at 7:00 p.m. ET on August 31 and $2,514.35 at 7:00 p.m. ET on September 5. The $97.09 advance equals 4.0% ($97.09 ÷ $2,417.26). On September 4, Blockhead reported Ether at $2,494.80, up 4.3% in 24 hours, alongside a broader risk-on move it attributed to growing bets on a Fed pause. 9 10

Yes case: From the September 5 Kraken close, $2,250 sits $264.35 lower, a 10.5% decline. A hawkish inflation surprise or a renewed geopolitical risk-off move could make that path relevant again before the year-end Binance deadline.

No case: The weekly Ether recovery and the 21-point probability decline show that the market has assigned less weight to the lower threshold. Continued risk appetite and support above the recent exchange closes would reinforce that view.

Conditional trade inference: If Ether holds above the recent $2,417–$2,514 Kraken closing range and the $2,250 probability keeps falling, a small defined-risk crypto-equity or Ether call spread is the upside expression. If Ether breaks below that range while the event probability rises, a defined-risk put spread or lower crypto-beta exposure becomes the downside expression. The thin contract liquidity argues for modest position sizes and direct spot-price confirmation.

What to carry into the next data window

September inflation: Pair the release with the Fed's two children and the two-year Treasury yield. The rate contract needs macro confirmation.
Israeli aviation notices: Track official Israeli authority announcements and the return or withdrawal of international carrier service. A broad official restriction decides the contract.
Ether's $2,417–$2,514 exchange-close range: Track the Binance ETH/USDT chart for settlement and the broader spot market for confirmation. The contract's own rule selects Binance.

Public Polymarket records disclose probability, volume, liquidity, bids, asks, and spread. Those records do not identify authenticated net Yes-versus-No flow or a reliable list of large trades, so liquidity and quoted spread are the market-structure checks used here. 1