Cellphone bills supplied a third of the core CPI move that repriced next week's Fed hike to 85%
Wireless telephone services rose 5.9% in August, the most the BLS has ever recorded for the category, and without that one line core inflation rounds to the 0.2% economists expected. Traders moved hike odds to 85% anyway.
The Investor · Invest desk
What happened
- Core consumer prices rose 0.3% in August, above the 0.2% economists expected, in the last inflation reading to land before the Fed's meeting next week.
- Traders lifted the priced probability of a quarter-point hike next week to roughly 85%, from 70% before the report.
- Cellphone service contributed 0.077 percentage point to the CPI increase, about a third of core CPI's 0.230-point total for the month.
- A bond-market selloff pushed the 10-year Treasury yield toward 5%, tightening financial conditions before the committee has voted on anything.
Why it matters
- Who's exposed exposure Anyone who financed on the assumption the hiking cycle had ended is exposed on both legs at once, the policy rate and the long end, before a vote is taken.
- What it limits constraint The selloff tightens conditions on its own, so credit-funded capex plans, the AI buildout included, face a higher cost of money even if the committee holds.
- What doesn't add up contradiction Core reads 0.3% with the wireless line in and 0.2% with it out, so the case that the Fed is behind rests on whether a record one-month category move counts as signal.
- What it costs cost The tightening lands on households whose wage growth has now decelerated five months running, and on sentiment that is already close to a record low.
Next story · Leadership · yesterday
Warsh's Bangkok interview is the last Fed speech before the October rate meetingConfirmed2 publishers
Smartphone prices fell 1.7% in August and 12.2% from a year earlier, and telephone hardware overall dropped 2.4% on the month, in the same month Apple showed a folding phone at roughly $2,000 [14][15]. The increase came from service plans, which contributed 0.077 of core's 0.230 percentage points [12]. Subtract that and 0.153 is left, which rounds to 0.2% [21][13].
Composition may not reach the vote. Thursday's producer-price report, which feeds the Fed's preferred inflation gauge, came in hot [25]; oil is back above $100 [4]; headline CPI rose 0.4% with gasoline up 3.9% [3]; and Governor Christopher Waller had already signaled that "it may not take much acceleration in inflation" to nudge him into supporting a hike [26].
Chair Kevin Warsh has stayed ambiguous about the next move. That made Friday's release the last evidence before next week's meeting [6][7].
Taking 85% of a quarter point puts about 21 basis points of policy tightening into forward pricing already [23]. From the other side, the implied probability of no move at all halved, 30% to 15% [24]. The long end moved too, with the 10-year climbing toward 5% [27], and Adam Turnquist, chief technical strategist at LPL Financial, said rates have recently "traded the stairs for the elevator" [16]. A clear break above 5%, he said, would put the 2006-2007 highs of 5.25% to 5.35% into focus [17]. That is another 25 to 35 basis points on ten-year money [22].
"With a 0.3% month-over-month increase in Core CPI, the Fed now finds itself with its back against the wall," said Chris Zaccarelli, chief investment officer at Northlight Asset Management [10]. Equities took it well, with all three indices higher [5].
"We haven't seen this type of income squeeze since 2012," Gregory Daco, chief economist at EY-Parpletheon, wrote on X [20]. Consumer sentiment printed near a record low on Friday morning [19].
September's wireless line decides which reading held. The 5.9% August jump is the largest the BLS has ever recorded for the category [8]. If it sticks, the 0.077 was signal and core services are running at 0.3% [12]. If it gives the gain back, next week's hike answers oil, gasoline and the producer-price report, and energy still has months of pass-through into airfares and plastics ahead of it [9].
What to watch
- September's wireless telephone services line: whether the 5.9% jump holds or reverses, which settles whether core services are running at 0.3%.
- Whether the 10-year breaks 5% cleanly and moves toward the 5.25% to 5.35% range Turnquist named.
- Whether Warsh resolves his ambiguity at the meeting or leaves the next move unguided again.
Information, not investment advice. This story is general information about companies and markets, drawn from cited reporting. It is not a recommendation to buy, sell or hold any security; check the cited sources before acting.
Clarity's read
What the record supports and how the coverage leans. The claims behind it follow.
Reality
- Evidence60
- Adoption
- Not scored
- Hype gap+20
- Incentives30
- Confidence62
Perspective Coverage
10 publishers- Builder
- Builder 5%
- Operator
- Operator 15%
- Investor
- Investor 80%
Claim ledger
Ranked by verification strength, evidence, and original report placement.
- [1]
Traders price the probability of a quarter-point Fed hike next week at roughly 85%, up from 70% before the CPI report.
- [2]
Core consumer prices rose 0.3% in August, above expectations for 0.2%.
- [3]
Headline CPI climbed 0.4% in August, with gasoline prices jumping 3.9%.
- [4]
Oil had pushed back above $100.
- [5]
Stocks did not sulk over the report, with all three indices shooting higher.
- [6]
Chair Kevin Warsh's ambiguity over the Fed's next move made Friday's final inflation data before next week's meeting unusually important.
- [7]
The Fed meets next week, and Friday's CPI was the final inflation data before that meeting.
- [8]
Prices for wireless telephone services surged 5.9% in August, the largest increase the BLS has ever recorded for the category.
- [9]
Energy prices are rising sharply and the latest spike in oil could still work into everything from airfare to consumer goods such as plastics over the coming months.
- [10]
"With a 0.3% month-over-month increase in Core CPI, the Fed now finds itself with its back against the wall," said Chris Zaccarelli, chief investment officer at Northlight Asset Management.
- [11]
The AI capital-expenditure boom continued to add pressure to credit markets.
- [12]
Cellphone service alone contributed 0.077 percentage point to the overall CPI increase, about one-third of core CPI's total 0.230-point contribution.
- [13]
Excluding wireless telephone services, core inflation worked out to roughly a 0.2% increase rather than 0.3%.
- [14]
Smartphone prices fell 1.7% in August and 12.2% from a year earlier, while the broader telephone-hardware category dropped 2.4% on the month.
- [15]
Apple unveiled a roughly $2,000 folding phone.
- [16]
Adam Turnquist, chief technical strategist at LPL Financial, said rates have recently "traded the stairs for the elevator".
- [17]
Turnquist said a clear break above 5% on the 10-year would put the 2006-2007 highs around 5.25% to 5.35% into focus as a comparison.
- [18]
Wage growth decelerated for the fifth month in a row.
- [19]
Consumer sentiment came in Friday morning at another near-record low.
- [20]
"We haven't seen this type of income squeeze since 2012," Gregory Daco, chief economist at EY-Parpletheon, wrote on X.
- [21]
Core CPI's contribution excluding cellphone service was 0.153 percentage point.
- [22]
Turnquist's 5.25% to 5.35% reference range sits 25 to 35 basis points above the 5% level the 10-year is approaching.
- [23]
An 85% priced probability of a quarter-point move is about 21 basis points of expected policy tightening.
- [24]
The implied probability of no move next week halved, from 30% before the report to 15% after it.
- [25]
Thursday's producer-price report, which feeds into the Fed's preferred inflation gauge, came in surprisingly hot.
- [26]
Fed Governor Christopher Waller signaled that "it may not take much acceleration in inflation" to nudge him into supporting a hike.
- [27]
The 10-year Treasury yield climbed toward 5%, putting that threshold within reach.
- [28]
The inflation surprise arrived alongside a bond-market selloff that is already tightening financial conditions.
Sources
10 independent publishers whose own reporting we read for this story.
- americanbanker.comModest CPI reading gives Fed no clear direction on rates
1 article · September 11, 2026
- cnbc.comCPI report, Oracle earnings, Trump’s cash promises and more in Morning Squawk
1 article · September 11, 2026
- crowdfundinsider.comInflation: CPI Remains Warm, Fed Rate Hike Looking More Likely Next Week
1 article · September 11, 2026
- cryptobriefing.comPolymarket predicts 83% chance of Fed rate hike on September 16
1 article · September 12, 2026
- cryptopolitan.comU.S. inflation held at 3.4% in August, while monthly prices rose 0.4%
1 article · September 11, 2026
- decrypt.coBitcoin Rises as Markets Digest Inflation Data Ahead of Fed Rate Decision
1 article · September 11, 2026
- fortune.comWall Street thought the Powell hike was over. Now Kevin Warsh has his ‘back against the wall’
1 article · September 11, 2026
- scmp.comUS consumer prices pick up in August, bolstering chances of interest rate increase
1 article · September 11, 2026
- seekingalpha.comAugust CPI Firms Up A September Fed Rate Hike, Stocks Surge
4 articles · September 12, 2026
- semafor.comUS inflation stayed hot in August, boosting odds of a rate hike
1 article · September 11, 2026
Topics and entities
Entities
- Bureau of Labor Statistics
- Northlight Asset Management
- Apple
- Christopher Waller
- Chris Zaccarelli
- Polymarket
- Consumer Price Index
- LPL Financial
- Kalshi
- Kevin Warsh
- Federal Reserve
- CME FedWatch