Today's raw material is the best market-behavior research of the last five years on the world's most important number — six papers from the Journal of Financial Economics, the Quarterly Journal of Economics, Economics Letters, and the Journal of Futures Markets — distilled into one connected walk.

The walk, in order: the market moved houses → the new rate runs on different fuel → where the money actually runs out → the thirty-minute window that measures the Fed → volatility on a staircase → the July dates that test all of it.

The policy tape: June meeting held at 3.50–3.75% unanimously, but the easing bias was stripped and 9 of 19 projections now pencil a 2026 hike. Markets price roughly a 1-in-3 chance the July 28–29 meeting hikes. Street calls have split: cuts pushed to 2027 on one side, a hike series on the other.

The inflation tape: the Gulf escalation put oil back in the rate story — tankers hit, strikes on the Strait, global yields at multi-week highs with the 10-year near 4.55%. The test lands Tuesday: CPI, surveyed at 3.8% headline / 2.8% core — two weeks before the Fed.

The plumbing tape: this week's 3-, 10- and 30-year auctions all settle Wednesday July 15; the Treasury is rebuilding its cash account toward ~$1T by late July; and the overnight funding rate sits calm at 3.53%, 9bp under fed funds. Calm surface — loaded calendar.

The research: Brugler, Khomyn & Putniņš (JFE 2025) studied the hand-off through a market-quality lens — liquidity, price discovery, and how information gets impounded across competing benchmark contracts. Their point: a benchmark transition isn't cosmetic. WHERE prices are discovered physically moves.

Why you care: every fed-funds bet, hedge, and vol position you see quoted settles on the new rate's behavior. Old-era reflexes — like reading the benchmark as a bank-credit thermometer — simply don't transfer to the new venue.

A market this size picking up and moving houses is rare enough that it's worth seeing in motion —

The research: Klingler & Syrstad (JFE 2021) identified the new rate's three drivers — balance-sheet regulation pushes it up; more government debt outstanding raises it beyond the predictable reporting-date spikes; and collateral availability moves secured rates hardest.

The consequence (and you don't need the plumbing detail to use it): Treasury issuance is now a direct input to front-end pricing. The auction calendar and the deficit path are rate information — not background noise.

Live right now: $39.4T of public debt and rising, a quarter of heavy bill issuance ahead as the Treasury rebuilds its cash account — while the rate naps at 3.53%, 9bp below fed funds. The machine is quiet today. Watch what it runs on —

The research: Copeland, Duffie & Yang (QJE 2025) showed funding stress tracks the reserve balances of the ten most repo-active dealer banks, not system-wide totals — with spikes tied to delayed intraday payments to those banks and magnified by early-morning Treasury settlement.

Why spikes explode instead of building: the companion theory (Yang, “Why Repo Spikes”) shows the mechanism is self-fulfilling — if every bank expects the others to open short of cash, everyone delays paying first, and the system seizes all at once. Sudden and convex, not gradual.

The broad takeaway — no specialist knowledge required: the system-wide average tells you almost nothing; the calendar tells you when the fragile mornings are — big settlement days, quarter-ends, heavy issuance windows. On the worst of them, Sep 17 2019, funding printed 5.25% against a ~2.25% target. Here's how a seizure builds —

The research: Bauer (Economics Letters 2024) rebuilt the classic Fed-surprise series for the new era — 30-minute windows in fed funds and SOFR futures around announcements, with SOFR futures the recommended instrument from 2022 on. The finding: recent-cycle surprises are the largest in over a decade.

June 17, measured live (we pulled the five-minute bars): the unanimous hold still printed +1.5bp hawkish inside the window, and the press conference carried the day to about +5bp. Even a “nothing” meeting leaves a reading.

The next reading is dated: July 28–29, with roughly a 1-in-3 hike priced. Whatever prints in that half hour is the cleanest read of what the Fed actually changed — and the follow-through is the trade. Watch the instrument work —

The research: Brace, Gellert & Schlögl (J. Futures Markets 2024) calibrated a multifactor stochastic-volatility model to options on SOFR futures, across maturities and strikes. The defining feature: the meeting-date jump structure — with mean reversion arising from the policy cycle itself.

The broad read: at the front of the curve, uncertainty has an address and a date. The July 28–29 step carries roughly a one-in-three-hike's worth of energy; the flat stretches between meetings carry almost none.

And the staircase moved: three months ago the strip priced steps down to ~3.4%; today it prices steps up, peaking at ~4.1%. The whole path flipped direction in one quarter — the largest-surprises-in-a-decade era doing its work. Walk the corridor —