Societe Generale's call is three Federal Reserve rate rises: 25 basis points in September, 25 basis points in December, and another 25 basis points around March.
The usual reading of a rate rise is higher yields all along the curve. Subadra Rajappa said the bigger risk to longer-dated yields is a Fed that does nothing at all.
"The concern for me is that they don't do anything. And that's when you start seeing inflation expectations getting higher, maybe a little bit unhinged."
Rajappa runs research at Societe Generale, and the three-hike path is her firm's own published call rather than a personal hunch; her bear case has yields reaching 5.25%.
The full segment is covered here so you can skip it.
Here are the 5 calls that matter.
👤 Guest: Subadra Rajappa, Head of Research at Societe Generale
🎙️ Host: Melissa Lee, anchor of CNBC's Fast Money
👥 Also on: Tim, one of the traders on the Fast Money desk, who argued that a hike would calm the bond market rather than unsettle it
📰 Published: 14 September 2026 on CNBC's Fast Money
🟣 Apple Podcasts | 🔗 Episode page | ⏱️ 6 min
Key Takeaways
The day's selloff in government bonds was an oil trade before it was anything else
It reversed intraday on a presidential post about a possible deal with Iran
Societe Generale's call is three quarter-point hikes: September, December and around March
The tightening has not bitten yet — financial conditions are still very accommodative
The Fed almost has to deliver September's hike because the market has already priced it
Her rule of thumb is that the Fed delivers once pricing is about 70% or above
A hike is what caps the extra yield demanded on long-dated bonds, not what causes it
The outcome she is actually worried about is a Fed that does nothing
A 5.25% bear case only damages risky assets if yields get there quickly
A wave of corporate issuance still has to be absorbed at higher absolute yields
1. An Oil-Driven Bond Selloff
The segment began with the desk already arguing about crude. Tim, one of the traders, said the level that would settle markets down is a long way above where oil sits now: "If you told me oil was going back to $90 a barrel and going to stay there, I think the markets would have a chance to stabilize. I don't think we're going back to 70." Melissa Lee then brought in Rajappa and put her bear case — five and a quarter — to her as the opening question.
Rajappa took the same side as the desk on what actually moved the tape. She said the day's price action was driven much more by what happened in oil markets, "And global rates are much more sensitive to oil prices."
The sequence she described ran from Europe outward: a selloff in bunds, then a selloff in global bond yields, with Treasuries following. "So it's definitely an oil driven trade."
It unwound within the session. "And you saw that reverse as soon as we got that tweet from President Trump about potential deal with Iran."
Underneath the oil move she named four separate pressures on yields — the trajectory for inflation, "probably a little bit of Fed inaction", a build-up in inflation expectations, and the broader path of government debt and deficits, which she said is "not something we can solve overnight."
She put her own firm among those calling for the central bank to move: there are market participants, "ourselves included", who think the Fed should be acting sooner rather than later.
2. The Three-Hike Call
Lee's next question was whether this is the start of a tightening cycle or "sort of one off, maybe two" spread over some months.
Societe Generale's forecast is three quarter-point rises delivered one meeting at a time, not a burst.
"Our call is for three rate hikes, 25 basis points in September, 25 basis points in December, another 25 basis points, maybe in March."
The reason for the spacing is that the Fed wants to watch the reaction. "But it's going to be a gradual sort of a rate tightening cycle, if you will, because the Fed is going to deliver a hike. See how the market reacts."
Her evidence that tightening has not yet done its work is the market's own indifference to it. She pointed back to the desk's earlier discussion: the market "hasn't really reacted to higher interest rates."
The measure she used for that is financial conditions — how easy it is for companies and households to borrow overall. "I mean, financial conditions, broadly speaking, are still very, very accommodative."
3. Officials Should Stay Quiet
Lee asked how to read Treasury Secretary Bessent saying that he is the house and that he will go in and deliver price equilibrium — her own paraphrase, which she flagged as roughly his words — and whether Rajappa believed it.
Rajappa did not answer the question as asked. "I mean, I think that it's better if policymakers actually kind of stay out of the headlines when it comes to this, because as investors, we're looking at fundamentals."
Her objection is that official intervention muddies the signal investors are trying to read. Investors are trying to get a holistic view of the markets, she said, and buybacks or operations to intervene in the market are "kind of confusing."
The comparison she reached for was currency intervention: "I mean, I get as an investor, I feel the same way when I see, say, the Ministry of Finance intervene in the yen market. So ultimately, I think that the markets and investors are going to prevail."
The desk read the non-answer for what it was. One trader called it "very eloquent", and Lee translated it out loud: "I mean, it sounded like a no to me, but please go on."
4. The Risk Is Doing Nothing
Lee asked whether the market would be so confused by a Fed that skips the meeting "that it will have a bit of a hissy fit." Rajappa's reply was two words: "Yeah, a tantrum."
She said the central bank has to deliver the quarter-point rise that is already fully priced in, and that both a skip and a surprise 50 basis-point move would produce significant price action in the bond market.
The threshold she gave for when the Fed follows the market is specific: "Typically in the past, the Fed has delivered when the market's about 70% or above priced in." Failing to deliver, she said, would definitely be a source of volatility.
Tim made the counterintuitive case back to her, inviting the pushback on himself first: "But I'm of the belief that if they do nothing that's bearish bonds. But if they do hike that actually might provide a calming influence on the bond market. And somewhat counterintuitively, rates might go down in the back end."
Rajappa agreed, and gave the mechanism: a hike would cap the extra yield investors demand for holding long-dated bonds, because it shows the Fed will act on inflation. "I think that if they raise rates and show that they're actually committed to fighting inflation, which is what Warsh has been saying all along, I think that could actually cap the rise in term premia on the long end, because it shows a clear commitment to act if inflation starts to rise."
Inaction is the case she treats as dangerous, not tightening. "The concern for me is that they don't do anything. And that's when you start seeing inflation expectations getting higher, maybe a little bit unhinged." She added: "The market's going to get uncomfortable that the Fed is not being proactive about fighting inflation."
5. If 5.25% Yields Arrive
Lee closed by returning to the bear case: if yields get to 5.25% and stay there, what happens?
Rajappa's answer was that the speed of the move matters more than the level it reaches. A gradual rise in yields, of the kind seen through this year, lets the equity market recalibrate as it goes along.
"If we see a very sharp rise in yields, that's when you start seeing the impact of higher prices feed through into risky assets."
The first channel she named is corporate credit, where the effect would show up as wider spreads between corporate bond yields and government ones.
The second is supply. A slew of new corporate issuance is coming into the market and has to be absorbed, and she noted that even though corporate bond spreads are narrow, the absolute level of yields is higher because Treasury yields are higher.
The open question she left is arithmetic rather than sentiment: how the market absorbs that additional supply, and how equity markets recalibrate to a higher rate regime.
Bonus Insights
The 5.25% figure was the desk's frame, and Rajappa only half-owned it. Lee put it to her in the first question; her answer was "It is kind of my bear case", and the number came back as the last question of the segment rather than as something she volunteered.
Tim asked to be argued with before making his point, and then apologized for interrupting Rajappa mid-answer and told her to continue — the two of them ended up on the same side of the trade anyway.
The debt-and-deficit thread was the one item on her list of pressures that she ruled out of the near-term discussion entirely, on the grounds that it cannot be fixed quickly.
Rajappa's bottom line is that a quarter-point rise this week is the lower-risk path for the bond market: it is already priced, it would cap the extra yield investors demand for holding long-dated bonds, and the outcome she is worried about is a Fed that leaves rates alone while inflation expectations drift higher.
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