Costa: South Africa Trade Index Down 25% Since Conflict

The Iran war is driving sharp swings in emerging markets, leaving stocks volatile after a difficult month as higher oil prices and global growth concerns cloud the outlook. Luis Costa, Head of Emerging Markets Strategy at Citi, told Bloomberg that EM central banks and investors should prepare for a risk-off environment and possible policy divergence as authorities balance energy-driven inflation pressures against slowing growth.

Analysis

The current EM move is being driven by a two-step mechanism: an oil-driven funding shock that first tightens USD/FX liquidity and then forces local central banks into defensive posture. Expect sovereign spreads to gap wider in the first 2–6 weeks (think 50–150bps in acute episodes) as external financing windows tighten and portfolio allocations reprice, with a second-order hit to tradeable growth exposures (manufacturing exporters suffer margin compression from higher input energy costs).

Winners will be commodity-linked sovereigns and listed miners/ag producers whose fiscal balances and FX receipts improve; losers are high-importers with weak FX reserves and high external short-term debt where central-bank rate hikes will crush domestic demand. Financials in those high-importers are a particular asymmetric short: higher NIMs from hikes don’t offset credit-cycle impairment and rising non-performing loans over a 3–12 month horizon.

Key catalysts to watch are (1) global oil moves — a $10/bbl move either way materially shifts EM CPI and FX paths inside 4–8 weeks, (2) a coordinated liquidity response (swap lines/FX auctions) which can arrest spreads in 1–3 weeks, and (3) any escalation beyond the current theater which is a months-long tail risk that would justify large-scale de-risking. The consensus is pricing a shallow disruption; markets should prepare for bimodal outcomes — stabilization within 6–12 weeks or a multi-quarter re-pricing if sanctions/secondary effects propagate.

Key Decisions for Investors

• Pair trade (3-month): Long EWZ (Brazil equity) + Short EEM (broad EM equity) to isolate commodity-exporter outperformance. Position size 2–4% NAV, target 15–25% relative upside if oil stays elevated; stop-loss if EWZ underperforms EEM by 7% in 2 weeks.
• Credit protection (6-month): Buy EMB 6-month put spread (buy 1 put ~5–7% OTM, sell lower strike to fund) to hedge a sovereign-spread widening scenario. Cost ~1–2% of notional; payoff kicks in if spreads widen >75–100bps — asymmetric protection vs outright selling of EM credit.
• FX tactical (1–3 months): Short TRY via forwards or FX options to capture idiosyncratic funding stress; size modest (1% NAV). Target 10–20% move, cap loss with one-way option or stop at 6–8% adverse move.
• Equity tail hedge (1–3 months): Buy EEM 1–3 month puts (5–10% OTM) sized to cover 30–40% of EM equity exposure. Premium is small insurance for a rapid risk-off and allows holding on to longer-term positioning if dislocation is temporary.
• Trigger/exit rules: If Brent falls >$10 within 10 days or coordinated central bank swap-lines are announced, reduce credit/FX hedges by 50% and shift pair trade to neutral within 1 week; if conflict escalates regionally, increase hedge sizing to 200–300% of baseline within 48 hours.