Commodity cycle investing is not just about picking the right stocks — it is about being in the right sector at the right phase. A stock that returns +500% from trough to peak can return -60% if you buy it at the wrong phase. Sector rotation — systematically moving between commodity sectors as the cycle evolves — is the discipline that separates professional cycle investors from retail followers of financial media narratives.
The Four Phases of the Commodity Cycle
| Phase | Duration | Signal characteristics | Best sectors | Worst sectors |
|---|---|---|---|---|
| Phase 1: Trough | 1–6 months | All signals in deep BUY. PMI < 45. Brent < $40. BDI < 1,000. | Shipping (leads), copper mining | Defensives (already peaked) |
| Phase 2: Early Recovery | 3–12 months | Signals recovering. PMI 45–52. Brent $40–70. BDI 1,000–2,500. | Oil majors, iron ore miners | Shipping (may be topping) |
| Phase 3: Mid-cycle | 6–24 months | Signals in NEUTRAL. PMI 50–55. Brent $70–90. Copper $6,000–9,000. | Steel, fertilizers, industrials | Shipping (likely topping) |
| Phase 4: Late-cycle/Sell | 12–48 months | Signals in SELL. PMI > 55. Brent > $90. Copper > $9,500. | Defensives, gold, cash | All cyclicals — exit |
Where Are We Now? (March 2026)
Current signal readings place the Signycle cycle score at 81/100 — firmly in late-cycle/Phase 4 territory. Brent at $108/bbl (SELL), copper at $12,043/t (DEEP SELL), gold at $4,493/oz (SELL), salmon at NOK 94/kg (approaching SELL). The recession probability at 54% suggests we are approaching Phase 1 — but timing the turn is inherently uncertain. The rotation playbook for the current environment: reduce cyclical exposure, particularly in sectors with the highest signal readings (copper, oil, gold), and prepare watchlists for Phase 1 re-entry when signals deteriorate.
The Rotation Playbook: Phase by Phase
Entering Phase 1 (Trough): Buy dry bulk shipping first (BDI signal), then copper miners, then iron ore. Oil majors are typically still falling. Do not chase oil at Phase 1 — it comes later. Position sizing: start small (25–30% of intended position), add as signals confirm recovery.
Entering Phase 2 (Early Recovery): Add oil majors as Brent crosses $50/bbl rising. Add iron ore as Chinese PMI recovers above 50. Reduce dry bulk if BDI > 2,000. The shipping stocks that led Phase 1 often top before the broader commodity cycle.
Entering Phase 3 (Mid-cycle): Rotate into steel producers, fertilizers and industrial commodity stocks. These lagged in Phase 1 but now have the best earnings momentum. Reduce copper if > $8,000/t. Hold oil if Brent < $80.
Entering Phase 4 (Late-cycle): Systematically reduce cyclical exposure. Sell in tranches: first copper (most extreme), then oil (most visible), then steel (most lagged). Move toward defensive equities, gold or cash.
The Full Return Map: 2020 Cycle Example
| Phase | Timing | Action | Result if followed |
|---|---|---|---|
| Phase 1 entry | Apr 2020 | Buy GOGL, FCX, Vale, FMG | All up 200–963% by end 2021 |
| Phase 2 rotation | Sep 2020 | Add EQNR, Shell, RIO | Add 100–200% to oil/iron ore |
| Phase 3 rotation | Mar 2021 | Add MT, Yara, Hapag-Lloyd | Add 100–400% to steel/container |
| Phase 4 exit | Oct 2021–Jun 2022 | Sell BDI stocks, copper, then oil | Lock in gains before corrections |
The Biggest Sector Rotation Mistakes
Chasing the narrative: Oil crashes dominate financial media — so investors buy oil at Phase 2 or 3, missing the Phase 1 shipping and copper gains. By the time CNBC is bullish on oil, Phase 4 is near. Staying too long: The stocks that led Phase 1 (shipping) often peak before the broader cycle. Investors who rode Golden Ocean from 28 to 299 and then back to 80 by failing to sell at BDI > 3,000 gave back half their gains. Ignoring sector sequencing: Buying steel producers in Phase 1 because "steel follows copper" misunderstands the lag — steel is a Phase 3 story, not Phase 1.
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