The S&P Finished Flat. The Dow Lost 890 Points

Nine of eleven American sectors fell on the week while the broad index closed 0.08% lower, and the two-year note added ten basis points against two at the ten-year. Healthcare led all eleven and ended the week as the largest of six sector positions in the even-weight strategy.

Brad Roth
September 20, 2026

TL;DR

• The Federal Reserve raised to 3.75% to 4.00% Wednesday and the Bank of Japan to 1.25% Friday, a 31-year high. Three major central banks have now tightened inside nine days.

• The S&P 500 finished down 0.08% and the Dow down 1.69%, a drop of 890 points. Nine of eleven American sectors fell.

• The two-year note added ten basis points on the week and the ten-year two. The gap between them closed to 25 basis points from 33.

Week in Review

Weekly closes, Friday 9/18/26

• The S&P 500 closed at 7,650.50, down 0.08% on the week.

• The Dow ended at 51,682.64, down 1.69%.

• The Nasdaq Composite finished at 26,522.55, up 0.72%.

• The Russell 2000 closed at 2,860.40, down 1.50%.

• The VIX ended at 14.81 against 15.84 a week ago.

Two of eleven American sectors finished higher. Healthcare led at 1.83% and technology added 1.03%. The other nine fell, utilities worst at 3.04%, then financials at 2.43%, real estate at 2.05% and materials at 1.88%. That's a market where the index went nowhere and the average large American business went down.

The repricing moved to the front of the curve. The two-year note closed at 4.743% against 4.644% a week earlier, the ten-year at 4.996% against 4.975%, and the thirty-year at 5.327% against 5.354%. Ten basis points at the short end, two in the middle, three lower at the long end. West Texas settled Friday at $96.08, down 2.34% on the day, after trading above $104 on Wednesday. Brent closed at $103.19. Gold ended at $4,415.90 an ounce and silver at $66.79, up 0.6% and 2.7%. The dollar index closed at 99.94 against 98.84.

Three central banks did the work. The Federal Reserve raised a quarter point Wednesday to 3.75% to 4.00%, unanimously. The projections that came with it moved the end-2026 median to 4.1%, one more increase than June showed. Chair Warsh said the move removed a dose of accommodation, named rising commodity prices, and declined to guide. The Bank of Japan raised to 1.25% Friday on a 7-2 vote, its highest since 1995, and the yen weakened anyway. The European Central Bank had gone the week before. Europe took it hardest Friday. The DAX fell 1.60%, the CAC 40 1.49% and the FTSE 100 1.45%. The premium France pays over Germany to borrow crossed a full percentage point, the first time since the euro zone debt crisis.

Allocation Changes

Nothing changed in either published strategy. Same two indexes, same six sectors, same cash.

The index strategy runs the S&P 500 at 50.6% and the Dow at 48.2%, with 1.0% in T-bills. The even-weight sector strategy holds the same six real-economy sectors, and the spread between the largest and smallest widened to 176 basis points from 105: healthcare at 17.0%, financials at 16.4%, materials at 16.1%, industrials at 15.7%, real estate at 15.6% and utilities at 15.3%, with 4.2% in cash. Healthcare moved into the top position from second. The index finished flat because two sectors did all the lifting. Owning six equal-sized pieces of the real economy instead of a few very large names is the design, not an accident of it.

Neither strategy owns small companies, and neither owns a concentrated position in any single name. The Russell 2000 fell 1.50% against 0.08% for the broad measure, a gap of 142 basis points. Large, wide and evenly sized was the right side of that.

The actively managed strategy runs 20 positions. The direct energy position sits at 13.6% against 13.9% a week ago, and the long dollar position at 14.6% is still the largest single line in it.

The Bigger Picture

Three developed-market central banks tightened inside nine days, and the curve told you exactly where it believes the pain lands. The two-year note took ten basis points and the thirty-year gave back three. That is not a bond market worried about inflation running away. That is a bond market treating a central bank willing to raise into a supply shock as a reason to charge less for time, not more. The gap between the two-year and the ten-year is now 25 basis points against 33 a week ago and 40 two weeks ago. The front end is doing all the moving, and the front end is where policy actually lives.

Healthcare earned the top position by being the one sector furthest from both of the week's inputs. Its revenue isn't set by the policy rate. Its costs aren't set by a barrel of oil. One of those moved ten basis points last week and the other moved eight dollars, and that independence was worth 1.83%. Technology added 1.03% and isn't owned. The strategy is built to own the average large American business, not the handful holding the index up. Friday showed the difference cleanly. The Nasdaq Composite closed up 0.39% and the Dow closed down. When a market narrows to a few names, the arithmetic of an index stops describing what most businesses are doing.

Financials is the second largest of the six, and last week's open question got answered Wednesday. A higher policy rate lifts what a bank earns on its assets right away. A flatter curve compresses what it makes on the spread. The Federal Reserve delivered both at once, and financials was the second weakest American sector on the week. Utilities and real estate sit at the other end of the same equation, valued off a long rate that barely moved, and utilities was the weakest of the eleven. Energy is not owned, and this week showed why the rule exists rather than costing anything for it. Crude was above $104 Wednesday and settled at $96.08 Friday on a report that Saudi Arabia may restore about half a damaged pipeline within days. Then this weekend the Houthis claimed strikes on Riyadh, and Gulf equities opened lower. Eight dollars in three sessions, in both directions, on pipeline repair estimates and missile claims. That isn't a trend. That's a negotiation the system has no edge in, and the rule that keeps the strategy out of it is the same rule that keeps it out of the reversal.

THOR Risk Gauge

Constructive. Both systematic strategies ended the week near fully invested, at 99% and 96%, and volatility closed at 14.81 against 15.84 a week earlier. Equities aren't where the caution belongs. It sits at the front of the curve, where the two-year added ten basis points in a week the Federal Reserve's own projections moved to one more increase this year. And in an oil price that has traded an eight-dollar range on headlines three sessions running.

Signal Watch

THOR Index Rotation — As of 9/18/26

Half in each of the two oldest American benchmarks, 99% invested, with a point in bills. They finished the week 161 basis points apart, double last week's gap. That spread is the argument for owning both rather than choosing.

THOR Low Volatility — As of 9/18/26

Six sectors inside 176 basis points of each other, sized by rule rather than by conviction. Two answer to the long rate, one to the policy rate, two to the growth cycle and one to a demand curve that ignores all three. That last one led the week.

THOR AdaptiveRisk Dynamic — As of 9/18/26

The actively managed strategy runs 59.1% in equities, 15.9% in commodities, 14.6% in specialty currency exposure, 5.9% in alternatives and 4.6% in rate hedging. The long dollar position is the largest single line, and the dollar index gained better than a point in a week three central banks moved. Gold and a broad commodity fund anchor the rest. The rate hedge sat unchanged at 4.6% straight through the meeting.

Weekend Reading

Behind the Ticker — Values-Based Investing Isn't ESG, with Bob Doll of Crossmark Global Investments. Doll spent 40 years running American large cap money, as chief equity strategist at Nuveen and CIO of US equity at BlackRock, and now runs Crossmark. He takes apart the conflation of values-based investing with ESG, and walks through the two actively managed large cap funds Crossmark launched last July.

Global rate-hike cycle in view as central banks take on inflation (Reuters, September 18). Francesco Canepa on the shift in tone across the major central banks, written the morning Japan moved. The point worth keeping is that this tightening cycle starts from a much higher base than 2022 did, with no early end to the Iran war in sight.

Six Charts to Explain the Global Energy Crisis (CSIS, September 17). Joseph Majkut and colleagues on what the partial closing of the Strait of Hormuz has actually done to energy markets, in six pictures. Roughly a quarter of seaborne crude and a fifth of LNG moved through that water before February.

Why France's budget problems have driven its bond risk premium to 2012 highs (Reuters, September 18). The spread France pays over Germany passed a full point Friday for the first time since the euro zone debt crisis. When central banks are raising into a supply shock, the sovereigns with the least fiscal room reprice first.

Quote of the Week

"Markets are strongest when they are broad and weakest when they narrow to a handful of blue-chip names."

— Bob Farrell, Merrill Lynch, 10 Market Rules to Remember, Rule 7

Brad Roth / CIO, THOR Financial Technologies

This content reflects the opinions, analyses, and research of THOR Financial Technologies as of the date published. It is provided for informational and educational purposes only and does not constitute investment advice and should not be relied upon as the basis for any investment decision. Past performance doesn't guarantee future results, and all investments involve risk. For more information, please go to: thorft.com