Markets get five trading days this week, September 14 through 18, and the heaviest catalysts stack on a single afternoon. A Federal Reserve decision, a Bank of Japan decision, a retail sales print, and Lennar's earnings all land within hours of each other on Wednesday. Quadruple witching closes out the week on Friday.
What happened last week that sets up this week?
The S&P 500 fell 0.8% for the week ending September 11, even after rallying 0.9% on Friday alone. The Dow dropped 1.6% and the Nasdaq slipped 0.7% over the same five sessions. Four straight losing days were mostly erased by that Friday bounce, which followed a CPI print that landed close to forecasts and oil prices pulling back from their recent spike.
Friday's close: S&P 500 at 7,656.98, Dow at 52,573.29, Nasdaq at 26,333.04. The weekly change matters less than what that CPI print did to rate expectations heading straight into this week's Fed meeting.
What does the Fed decide on Wednesday, and how are the odds shifting?
The Federal Reserve announces its decision at 2:00 PM ET on Wednesday, September 16, against a current target range of 3.50% to 3.75%. Markets are no longer pricing a routine hold. Odds of a 25 basis point hike jumped hard after August's inflation data came in hotter than the market wanted with a hike already on the table.
August CPI printed at 3.4% year over year headline and 2.4% core. That pushed the CME FedWatch tool's hike probability to roughly 87%, up from about 72% before the CPI report and under 40% as recently as early August. The repricing started with Fed Chair Kevin Warsh's Jackson Hole remarks in late August and has been building since. TD Securities has already moved its call to a hike this meeting, with two more penciled in for October and January. Check the Fed's own meeting calendar for the exact schedule.
What is the Bank of Japan deciding the same week?
The Bank of Japan meets September 17 and 18, with its decision landing overnight US time and a governor's press conference to follow. The current policy rate sits at 1.00 percent, a 30-year high reached after June's hike and held unchanged in July. Another hike is widely expected this time.
A Fed hike and a BOJ hike landing in the same week matters for anyone watching the dollar-yen carry trade that has funded a chunk of risk-asset buying over the past two years. If both central banks tighten as priced, the rate differential that made short-yen positions profitable narrows further, and carry unwinds tend to move fast once they start.
What earnings and data land Wednesday alongside the Fed?
Retail sales for August and Lennar's fiscal third-quarter earnings both hit Wednesday, September 16. The setup gives the market a same-day read on the consumer just hours before the Fed's rate call, then a homebuilder's numbers right after the close.
The Census Bureau releases August retail sales at 8:30 AM ET, six hours ahead of the Fed decision. Lennar reports after Wednesday's close, and consensus estimates call for $1.30 in earnings per share against $2.00 a year ago, with revenue expected to fall to $8.37 billion from $8.81 billion. A homebuilder guiding for that kind of decline, arriving hours after a Fed decision that could push mortgage-adjacent rates higher still, is not a comfortable combination.
What is quadruple witching, and why does Friday matter?
Quadruple witching falls on Friday, September 18, when stock index futures, stock index options, single stock options, and single stock futures all expire at the same time. Volume typically runs two to three times a normal session as funds roll, close, or let contracts lapse.
The mechanical piece worth understanding: heavy open interest sitting at specific strikes can pin a stock or index near that level into the close, because dealers who are short those options hedge in a way that keeps price away from where it costs them the most. Landing three days after a live Fed decision and a BOJ decision, this quarter's witching carries more real positioning behind it than the last one did.
VIX already hinted at that. It closed at 15.84 on September 11, down 11.2% on the day, yet still roughly 9% above where it started the week. Options are pricing more movement into this stretch than a normal mid-September week would carry.
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