CSFX Weekly Index Analysis | Dow Jones · S&P 500 · FTSE 100 | March 21, 2026 | Capital Street FX
Weekly Index Analysis
The Iran War & Energy Shock — Macro Context
Week of March 16–21, 2026Triple Confirmation of a Trend Change — 200-DMA Breaks on Both US Indices
The week of March 16–21, 2026 marks a decisive escalation in the macro picture for global equity markets. Three converging forces collided simultaneously: the FOMC held rates at 3.50–3.75% and explicitly rejected near-term cuts (CME FedWatch now prices no cut until October 2027 — a historic repricing in under 48 hours); Iraq declared force majeure on all foreign-operated oilfields Thursday; and Iran launched new drone strikes on two Kuwaiti refineries, sending Brent to $112.19/barrel — the highest since 2022.
The Dow Jones closed below its 200-day moving average Wednesday for the first time since June 20, 2025. The S&P 500 sliced through its 200-DMA at 6,619 Thursday — unvisited since May 9, 2025. And the FTSE 100 — after briefly touching 10,945 all-time highs — has corrected 9.4% in three weeks to close at 9,918.
The 2-year/10-year Treasury yield curve flattened sharply — compressing from 74 basis points in early February to roughly 43 basis points Thursday. This is the stagflation geometry in the Treasury market: growth expectations rolling over while inflation stays hot. Every major central bank — Fed, BoE, BoJ, ECB, SNB — held rates this week, sending a unified message: there is no cavalry coming from monetary policy.
Wells Fargo strategists mapped a scenario where prolonged Hormuz closure and sustained oil above $100/bbl pushes the S&P 500 to 6,000 — ~8% below Friday’s close. Their base case remains 7,500 by end-2026 if the conflict resolves. Morgan Stanley and RBC Capital Markets both maintain bullish year-end targets of 7,750 but caution that the Iran conflict is the primary tail risk.
Hot oil (Brent +30% YTD), a Fed that has stopped cutting, rising 2Y yields, S&P 500 below 200-DMA — this matches the 2022 stagflation playbook. In that episode, the S&P 500 fell 27% before recovering.
Week-Ahead High-Impact Economic Calendar
March 23–28, 2026 · Index Market RelevanceThe week pivots around Friday’s US Core PCE — the Fed’s preferred inflation gauge — which is the single most important release for determining whether the current correction deepens or stabilises. Flash PMIs on Monday provide the first read on how badly the energy shock has hit business confidence. UK CPI and Retail Sales bracket the week as key FTSE 100 catalysts.
| Date | Currency | Event | Impact | Forecast | Previous | Index Implication |
|---|---|---|---|---|---|---|
| Mon 23 | USD | US Flash PMI (Mar) | HIGH | 51.5 | 51.6 | Soft miss = S&P 500 stagflation concern deepens; beat = temporary SPX bounce |
| Mon 23 | EUR/GBP | Eurozone & UK Flash PMI | HIGH | 50.8 / 51.2 | 50.2 / 51.0 | UK PMI beat = FTSE 100 domestic demand narrative; miss extends correction |
| Tue 24 | USD | US Consumer Confidence (Mar) | MED | 103.5 | 98.3 | Energy shock impact on consumer; weak print = DJI industrials selloff |
| Wed 25 | GBP | UK CPI (Feb) | HIGH | 3.1% y/y | 3.0% y/y | Hot CPI = BoE hawkish hold confirmed = GBP support but FTSE pressure via rate fears |
| Wed 25 | AUD | Australia CPI (Feb) | HIGH | 2.8% y/y | 2.5% y/y | Global inflation pulse; hot = risk-off = equity headwind across all indices |
| Wed 25 | USD | Durable Goods Orders (Feb) | MED | +0.8% | +3.2% | Capex proxy; miss widens DJI industrial weakness; could test 44,892 (0.786 Fib) |
| Thu 26 | USD | US GDP Final Q4 2025 | HIGH | 2.3% | 2.3% | Downward revision deepens growth scare; upward revision supports floor at 6,179 |
| Thu 26 | CNY | China Industrial Profits (Feb) | MED | — | +11.9% | Strong = Asian risk-on; positive for FTSE 100 miners/luxury sector |
| Fri 27 | JPY | BoJ Summary of Opinions (Mar) | HIGH | — | — | Hawkish tone = JPY strength = global risk-off = US equity pressure |
| Fri 27 | USD | 🔴 US Core PCE Price Index (Feb) | ⬛ HIGHEST | 2.7% y/y | 2.7% y/y | Week’s defining release. Miss ≤2.6% = SPX relief rally toward 6,620; beat ≥2.9% = DJI toward 44,892, SPX toward 6,179 |
| Fri 27 | GBP | UK Retail Sales (Feb) | HIGH | +0.3% | −0.9% | Recovery = FTSE 100 domestic consumer stocks bid; miss extends 9,808 Fib test |
| Fri 27 | EUR | Germany Unemployment / Eurozone Sentiment | MED | 6.2% / — | 6.2% / — | Labour market resilience = European equity floor; weak = broad EU selloff |
Friday 27 March is critical for all three indices. US Core PCE is the pivot between a relief rally and an accelerated breakdown. For the FTSE 100, Wednesday’s UK CPI and Friday’s Retail Sales are the additional domestic catalysts. Consider reducing index exposure going into Thursday’s close and rebuilding positions based on PCE direction on Friday.
Dow Jones Industrial Average — Weekly Analysis
DJI · W1 Chart · Bearish — 200-DMA Broken
The Dow Jones has entered a confirmed intermediate-term downtrend after breaking below its 200-day moving average Wednesday for the first time since June 20, 2025. Friday’s close at $45,577 places the index between the 0.618 Fibonacci ($46,116) and the 0.786 Fibonacci support ($44,893) — technically, this means the correction has already retraced 61.8% of the entire rally from $43,334 to $50,616.
The weekly high of $47,428 on Monday represented a failed test of the 0.382 Fibonacci ($47,835), confirming that prior supports are now acting as resistance. The moving average channels show price has broken below the lower band for the first time in this bull cycle — a structural signal of trend exhaustion.
Weekly candle: Open $46,707 → High $47,428 (failed 0.382 test) → Close $45,577. Candle body ~1,130 points — among the largest bearish weekly candles in this cycle. Stochastic: %K 59.90 crossing below %D 39.44 — bearish crossover in progress. Combined with 200-DMA break, weight of evidence strongly favours further weakness.
| Fib Level | Price | Role |
|---|---|---|
| 0 (ATH Zone) | $50,616 | All-Time High |
| 0.236 Fib | $48,898 | Resistance |
| 0.382 Fib | $47,835 | Resistance (was support) |
| 0.500 Fib | $46,975 | Recovery Target 2 |
| 0.618 Fib | $46,116 | Short Entry Zone |
| Current | $45,577 | Falling |
| 0.786 Fib (Key) | $44,893 | Bear Target 1 |
| 1.000 (Swing Low) | $43,335 | Bear Target 2 |
Last time DJI broke 200-DMA: June 20, 2025 — subsequently fell a further 8% before recovering. The 2022 episode saw a 27% total correction after the first sustained 200-DMA break. This signal triggers systematic strategy selling and institutional stop-losses across trillions in AUM. Largest DJI losers Friday: Honeywell −3.28%, Nvidia −3.17%, Boeing −3.00%.
Primary: Short — Relief Rally Fade
Bull Case / Recovery Trigger
S&P 500 Index — Weekly Analysis
SPX · W1 Chart · Bearish — Below 0.236 Fib
The S&P 500 is navigating a critical structural inflection point. The weekly close at 6,506.49 sits just 10 points above the 0.236 Fibonacci retracement at 6,496.29 — the thinness of this margin is itself a warning. The index has now broken below both its 200-day moving average (6,619) and is testing the first major Fibonacci retracement level of the entire 2025 bull run from $4,836 to $7,009.
The week’s high of 6,754 was a precise test and rejection of the 0.236 Fibonacci from above — confirming institutional supply in that zone. The candle body is clean and directional with no long lower wick, suggesting buyers have not yet stepped in aggressively at current levels.
Weekly: Open 6,674 → High 6,754 (rejection of 0.236 from above) → Close 6,506. Stochastic: %K 58.68, %D 40.21 — confirmed weekly bearish crossover. Prior two weeks: lower-high, lower-close structure. For pattern to shift bullish, SPX needs a weekly close back above 6,619 (200-DMA) — currently 113 points away.
| Fib Level | Price | Role |
|---|---|---|
| 0 (ATH Zone) | 7,008.98 | All-Time High |
| 200-DMA | 6,619 | Broken — Now Resistance |
| 0.236 Fib ⚠ | 6,496.29 | Testing (10 pts below spot) |
| Current | 6,506.49 | At 0.236 Fib |
| 0.382 Fib (Key) | 6,179.12 | Target 1 (Short) |
| 0.500 Fib | ~5,922 | Target 2 (Extended) |
| 0.618 Fib | 5,666.44 | Deep Support |
| 1.618 Extension | 3,494.04 | Extreme Bear |
Trillions in systematic strategies, risk-parity funds, and trend-following CTAs use the 200-DMA as a mechanical decision rule. When SPX closes below it: global macro hedge funds trigger stop-losses, 401(k) rebalancing models reallocate to bonds, retail confidence erodes. Historical median equity decline after 200-DMA breach in a high-VIX environment: additional −8% to −12% before stabilisation. Last breach: May 9, 2025.
Primary: Short — 200-DMA Retest Fade
Bull Case — 200-DMA Reclaim
FTSE 100 Index — Weekly Analysis
UKX · W1 Chart · Correcting — Test 0.618 Fib
The FTSE 100’s story is one of the starkest reversal signals among the three indices. Having printed an all-time high of 10,945 just two weeks ago — driven by European defence spending tailwinds, BoE credibility, and UK services sector strength — the index has corrected 9.4% in three weeks to close at 9,918.
This week’s close breaks below both the 0.500 Fibonacci level (10,025) and the moving average channel bands. The FTSE 100 now sits 110 points above the critical 0.618 Fibonacci support at 9,808 — a level that, if broken on a weekly close, opens the door to 9,499 (0.786 Fib).
RSI stochastic tells the most dramatic story: the yellow MA line at 70.52 was just in overbought territory — and is now falling rapidly while the purple line has collapsed to 49.64. This pace of RSI deterioration is consistent with prior FTSE correction episodes (2022, 2024) and typically leads to a 2–3 week continuation phase before a meaningful base forms.
Weekly: Open 10,261 → High 10,447 (failed test of 0.382 Fib at 10,242 from above) → Close 9,918 (near week’s low of 9,915). Confirms relentless selling with no meaningful accumulation. RSI stochastic: MA line 70.52 (%K) falling rapidly; %D line 49.64 — sharp overbought exit.
| Fib Level | Price | Role |
|---|---|---|
| 0 (ATH) | 10,945.21 | All-Time High (2 wks ago) |
| 0.236 Fib | 10,511 | Resistance |
| 0.382 Fib | 10,242 | Recovery Target 2 |
| 0.500 Fib | 10,025 | Recovery Target 1 / Broken |
| Current | 9,918 | Falling |
| 0.618 Fib (Key) | 9,808 | 110 pts away — Critical |
| 0.786 Fib | 9,499 | Bear Target |
| 1.618 Extension | 7,969 | Extreme Bear |
Unlike SPX and DJI (no direct energy production), the FTSE 100 contains BP (~3.9%), Shell (~7.4%), BAE Systems, and Rolls-Royce — all direct beneficiaries of elevated oil prices and the European defence spending surge. Long FTSE 100 / Short S&P 500 is a growing institutional trade. FTSE earnings base is partially supported by the same Iran war hurting US indices.
Primary: Long at 0.618 Support Zone
Bear Case / Breakdown Scenario
Three Indices — At-a-Glance Comparison
Weekly Index Summary — March 21, 2026| Index | Close | WoW Chg | Weekly Bias | Key Support (Fib) | Key Resistance | Candlestick | Setup | Primary Catalyst |
|---|---|---|---|---|---|---|---|---|
| DJI Dow Jones | 45,577 | −2.11% | Bearish | $44,893 (0.786) | $46,116 (0.618) | Bearish Engulfing | Short 46,116–46,500 | Core PCE Fri / GDP Thu |
| SPX S&P 500 | 6,506 | −1.90% | Bearish | 6,179 (0.382) | 6,619 (200-DMA) | Bearish Candle w/ Upper Wick | Short 6,580–6,620 | Core PCE Fri · VIX 26.78 |
| UKX FTSE 100 | 9,918 | −3.34% | Cautious Watch | 9,808 (0.618) | 10,025 (0.500) | Large Bear · Close at Low | Watch long 9,750–9,808 | UK CPI Wed / Retail Fri |
Cross-Asset Dashboard — March 21, 2026
Key Macro Signals| Asset / Indicator | Level | Change | Signal | Index Impact |
|---|---|---|---|---|
| VIX (Fear Index) | 26.78 | +11.31% | Elevated Fear | Broad equity headwind; options premiums expensive; use defined-risk strategies |
| Brent Crude | $112.19 | +9% WoW | Stagflation Risk | SPX/DJI margin compression; FTSE energy stocks benefit; consumer confidence hit |
| S&P 500 200-DMA | 6,619 | Broken | Bear Signal | First breach since May 2025 · Systematic strategy selling accelerates |
| DJI 200-DMA | ~46,843 | Broken | Bear Signal | First breach since June 2025 · Long-term trend turned negative |
| Russell 2000 (RUT) | 2,438 | −10% correction | Risk-Off | Small-caps in correction = broader growth concern; DJI vulnerability extends |
| 10Y–2Y Spread | ~43 bps | ↓ from 74 bps | Flattening | Stagflation signal in curve; reducing equity premium vs bonds |
| FedWatch — No Cut 2026 | 75% | Historic Reprice | No Monetary Backstop | Previous markets relied on “Fed put”; that backstop is gone for 2026 |
| Iraq Force Majeure | Active | New (Mar 20) | Supply Shock | Accelerates oil price risk; could push Brent to $120–$125 if sustained |
Frequently Asked Questions
For Active Index TradersConclusion & Weekly Outlook
The Anatomy of a Policy-Driven Correction — And What Comes NextTriple Confirmation of a Trend Change — And the One Variable That Decides Everything
This week’s price action delivered something that experienced traders recognise immediately: a triple confirmation of a trend change. The Dow breaks its 200-DMA. The S&P 500 breaks its 200-DMA. The FTSE 100 implodes 9.4% from an all-time high in three weeks. All three stochastic oscillators flash bearish crossovers. VIX surges. The yield curve flattens toward stagflation geometry. These are not isolated signals — they are the same macro force expressing itself across the full spectrum of global equities.
The Iran war is no longer a “geopolitical risk premium” in the price. It is now a fundamental input into every earnings model, every discount rate, and every central bank reaction function. Brent at $112 and rising, Iraq in force majeure, the Fed explicitly removing the 2026 rate cut pathway — this is the exact combination that turns corrections into bear markets. Whether this becomes that depends almost entirely on one variable: the duration of the Hormuz disruption.
For the week ahead, our framework is clear. Respect the 200-DMA breaks on SPX and DJI — they are not to be bought aggressively until reclaimed. Watch the FTSE 100’s 0.618 Fibonacci at 9,808 — it is the most structurally interesting accumulation level in the report. Let Core PCE on Friday lead the direction. A cool print below 2.6% is the only domestic catalyst that can override the geopolitical selling — it brings back rate cut hopes and could trigger the most violent bear squeeze of 2026. A hot print cements the “no cuts” regime and opens the door to SPX 6,179 and DJI 44,893 over the following weeks.
Manage position size. Define your risk. The market will tell you which path it chooses — your job is to be positioned to profit from either outcome without being destroyed by the wrong one.
