The Week the Fed Raised Rates and Market Fear Quietly Faded

A flat weekly number can hide a lively week. The S&P 500 finished September 14 to 18 almost exactly where it began, yet the week held a Federal Reserve rate hike, a sharp drop in fear and a slide in oil. Think of a duck on a pond: calm on the surface, paddling underneath.

• The S&P 500 closed the week at 7,650.50, a change of -0.08% from 7,656.98 ^[1].
• The VIX, a gauge of expected volatility, fell from 17.71 on the day of the Fed decision to 14.81 by Friday ^[2].
• The 10-year Treasury yield ended the week at 5.00%, about where it started (4.97%) ^[3].
• Brent crude slid 4.49% from its Tuesday close of 108.75 to 103.87 ^[4].

The headline: a rounding error

The S&P 500 closed at 7,656.98 on September 11 and 7,650.50 on September 18, a move of -0.08% ^[1]. The Dow Jones Industrial Average moved -1.69% over the same days, and the Nasdaq Composite +0.72% ^[5][6]. In three major indexes, the week’s net result was small.

What moved underneath

The index hit its low on September 16, the day the Federal Open Market Committee raised its target range by a quarter point, closing at 7,551.81. By Friday it was 98.69 points higher, a recovery of 1.31% in two sessions ^[1]. That is the visible half of the story.

The less visible half is the VIX, which is derived from option prices and is often described as the market’s fear gauge. It stood at 17.71 on decision day and slid to 15.44 the next day and 14.81 on Friday ^[2]. When investors pay less for protection, they are telling you the hike held no surprises.

Rates and oil: two quieter signals

The 10-year Treasury yield barely moved on the week, from 4.97% to 5.00% ^[3]. That matters because mortgage and corporate borrowing costs follow long-term yields more than the Fed’s policy rate. A quarter-point hike left the benchmark long yield unchanged.

Oil told a different story. Brent futures closed at 108.75 on Tuesday and 103.87 on Friday, a drop of 4.49% ^[4]. Falling oil is a tailwind for consumers and a headwind for energy shares, and it can nudge inflation expectations lower.

How unusual is a flat week?

A flat week is not rare. Using Friday-to-Friday closes in the S&P 500 series I reviewed, there are 102 weekly changes between October 2024 and September 18, 2026. 2 of them were as small as this week’s -0.08% or smaller, which is about 2 percent of weeks ^[1]. That makes a near-zero week a common outcome, not a signal in itself. What makes this one distinctive is the company it kept: a rate decision on Wednesday and a swing in the VIX.

The VIX fell 16.4 percent in two sessions, from 17.71 on September 16 to 14.81 on September 18 ^[2]. In the same data, 26 of 491 two-day windows showed a larger fall. So the drop in fear was large, though not extreme by the standard of the past two years. The two facts together, a flat index and falling volatility, describe a market that expected the Fed’s move and moved on. These counts are my calculation from daily closes and depend on the window chosen.

How to read a calm week

• A flat index is not a quiet market. Look at volatility and rates as well as price.
• Dip-and-recover days are information. The recovery from the September 16 low shows buyers were waiting.
• One week proves little. This is a snapshot, not a forecast.

These figures are closing prices from Yahoo Finance’s historical data pages as of the dates shown. Futures contracts such as Brent roll between months, so a continuous series can differ from a single contract’s settlement price.

Questions readers ask

Did the Fed's rate hike move the stock market?

Only briefly. The S&P 500 hit its weekly low on the decision day, September 16, then recovered 1.31% by Friday ^[1].

What does a falling VIX mean?

It means options traders are paying less for protection against large swings. The VIX fell from 17.71 to 14.81 in two sessions ^[2].